ARIEL GROWTH FUND
485BPOS, 1998-01-30
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<PAGE>
                          SECURITIES AND EXCHANGE COMMISSION

                               Washington, D.C.  20549
                               ________________________

                                      FORM N-1A

                           REGISTRATION STATEMENT UNDER THE
                                SECURITIES ACT OF 1933

                               REGISTRATION NO. 33-7699

                           Post-Effective Amendment No. 20

                                         and

                           REGISTRATION STATEMENT UNDER THE
                            INVESTMENT COMPANY ACT OF 1940

                              REGISTRATION NO. 811-4786

                                   Amendment No. 20

                                  ARIEL GROWTH FUND

                              307 North Michigan Avenue
                               Chicago, Illinois  60601

                  Registrant's Telephone Number, Including Area Code

                                    1-312-726-0140

                                  Agent for Service:

                                   Sheldon R. Stein
                                  D'Ancona & Pflaum
                               30 North LaSalle Street
                               Chicago, Illinois  60602
                                    (312) 580-2014

     It is proposed that this filing will become effective:

     ____      Immediately upon filing pursuant to paragraph (b)
       X       on February 1, 1998 pursuant to paragraph (b)
     ----
     ____      60 days after filing pursuant to paragraph (a)
     ____      on (date) pursuant to paragraph (a) of Rule 485

<PAGE>

     Registrant has registered an indefinite number of shares of its 
beneficial interest pursuant to Rule 24f-2, and filed its Rule 24f-2 Notice 
for its fiscal year ended September 30, 1997 on or about December 22, 1997. 

<PAGE>

                                   THE ARIEL FUNDS 
             (Appreciation and Growth Funds and Bond Fund-Investor Class)
                                CROSS REFERENCE SHEET
                                      FORM N-1A

ITEM                        SECTION IN PROSPECTUS

1.....         Cover Page
2.....         Fund Expenses
3.....         Financial Highlights
4.....         Cover Page; Management and Organization of the Funds; 
               Investment Objectives, Policies and Risk Factors
5.....         Management and Organization of the Funds
5A....         Total Return, Yield and Other Performance Information; 
               Management and Organization of the Funds
6.....         Cover Page; Management and Organization of the Funds; 
               Dividends, Capital Gains and Taxes
7.....         How to Buy Shares; Tax-Saving Retirement Plans; Net Asset 
               Value; Exchanging Shares; Management and Organization of the 
               Funds 
8.....         Redeeming Shares; Exchanging Shares
9.....         (Not applicable)

                           SECTION IN STATEMENT OF
ITEM                        ADDITIONAL INFORMATION 
                         (Growth and Appreciation Funds only)

10....         Cover Page
11....         Table of Contents
12....         (Not Applicable)
13....         Investment Restrictions; Additional Information About Lending 
               Securities and Repurchase Agreements; Portfolio Transactions; 
               Appendix
14....         Trustees and Officers; Compensation Schedule
15....         Trustees and Officers; Significant Shareholders
16....         Investment Adviser and Services Administration; Transfer Agent 
               and Custodian; Independent Auditors
17....         Portfolio Transactions
18....         General Information
19....         Net Asset Value
20....         (Not applicable)
21....         Investment Adviser and Services Administrator; Method of
               Distribution
22....         Calculation of Total Return
23....         (Not Applicable)
 

<PAGE>

               THE ARIEL FUNDS (Premier Bond Fund-Institutional Class)
                                CROSS REFERENCE SHEET
                                      FORM N-1A

ITEM                     SECTION IN PROSPECTUS

1....          Cover Page
2....          Fund Expenses for Institutional Class Shares
3....          Financial Highlights
4....          Cover Page; Management and Organization of the Fund; 
               Investment Objective, Policies and Risk Factors
5....          Management and Organization of the Fund
5A...          Total Return, Yield and Other Performance Information; 
               Management and Organization of the Fund
6....          Cover Page; Management and Organization of the Fund; 
               Dividends, Capital Gains, and Taxes; Certain Shareholders of 
               the Fund 
7....          How to Buy Shares; Net Asset Value; Exchanging Shares; 
               Management and Organization of the Fund
8....          Redeeming Shares; Exchanging Shares
9....          (Not applicable)

                    SECTION IN STATEMENT OF
ITEM                ADDITIONAL INFORMATION (Bond Fund - Both Classes)

10...          Cover Page
11...          Table of Contents
12...          (Not Applicable)
13...          Fundamental Investment Restrictions; Non-Fundamental 
               Investment Restrictions; Additional Information About 
               Investment Techniques; Portfolio Transactions; Appendix A 
14...          Trustees and Officers; Compensation Schedule
15...          Trustees and Officers; Significant Shareholders
16...          Investment Adviser and Services Administrator; Transfer Agent 
               and Custodian; Independent Auditors
17...          Portfolio Transactions
18...          General Information
19...          In-Kind Purchases of Institutional Class Shares of the Fund 
20...          (Not applicable)
21...          Investment Adviser, Sub-Adviser and Services Administrator; 
               Method of Distribution of the Investor Class Shares
22...          Calculation of Performance Data
23...          (Not Applicable)


<PAGE>

     Prospectus
   
                                  February 1, 1998
    
     Ariel Mutual Funds 
     Ariel Growth Fund
     Ariel Appreciation Fund
     Ariel Premier Bond Fund - Investor Class
     307 North Michigan Avenue, Suite 500, Chicago, Illinois 60601 

     The Ariel Growth Fund ("Growth Fund") and the Ariel Appreciation Fund
     ("Appreciation Fund") (collectively, the "Stock Funds") and the Ariel
     Premier Bond Fund (the "Bond Fund") (Stock Funds and Bond Fund
     collectively, the "Funds" ) are series of the Ariel Growth Fund (doing
     business as Ariel Investment Trust) (the "Trust").  Ariel Capital
     Management, Inc. (the "Adviser") is the Manager and Administrator of the
     Funds.  Whereas Ariel Capital Management, Inc. is responsible for the day
     to day investment decisions for the Stock Funds, Lincoln Capital Management
     Company ("Lincoln Capital") is the Sub-Adviser to the Bond Fund,
     responsible for the day to day investment operations.

     The Stock Funds each offer only one class of shares.  The Bond Fund
     currently offers two classes of shares, the Institutional Class and the
     Investor Class.  Investor Class shares require an initial minimum
     investment of $1,000 or more.  See "How to Buy Shares - Initial Purchase." 
     Institutional Class shares require a minimum initial investment of
     $1 million and are sold primarily to institutional investors under a
     separate prospectus.  Because the Investor Class incurs distribution
     services fees and bears higher administrative expenses, the Investor Class
     will have a higher expense ratio than the Institutional Class, which will
     affect the relative performance of the classes.  

About this prospectus 
     This prospectus sets forth important information concerning the Ariel
     Mutual Funds.  Please read it carefully before investing and keep it for
     future reference.  It is designed to provide you with information you
     should know before investing and to help you decide if the goals of the
     Funds match your own. 

   
     Statements of Additional Information (dated February 1, 1998) for the Stock
     Funds and the Bond Fund have been filed with the Securities and Exchange
     Commission and are incorporated herein by reference.  These Statements are
     available, without charge, upon request by calling 1-800-29-ARIEL
     (1-800-292-7435). 
    
     
     You pay no load
   
     The Funds' shares are sold at net asset value on a no-load basis.  This
     means that you do not pay a sales charge at the time of purchase or at the
     time of redemption.  The Funds do, however, pay Rule 12b-1 distribution
     fees at the annual rate of 0.25% of average daily net asset values.
    

     SHARES OF THE FUNDS ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED  OR
     ENDORSED BY, ANY BANK, AND ARE NOT FEDERALLY  INSURED BY THE FDIC, THE
     FEDERAL  RESERVE  BOARD, OR ANY OTHER AGENCY. 

     THESE SECURITIES HAVE NOT BEEN APPROVED  OR  DISAPPROVED BY THE SECURITIES
     AND EXCHANGE  COMMISSION OR ANY STATE  SECURITIES COMMISSION, NOR HAS THE
     FEDERAL OR ANY STATE SECURITIES COMMISSION PASSED ON THE ACCURACY OR
     ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY IS A
     CRIMINAL OFFENSE. 

                                           
<PAGE>


Table of Contents 
   
                                                                   Page 
    
                                                                   -----
Fund Expenses. . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Financial Highlights . . . . . . . . . . . . . . . . . . . . . . . .5

Investment Objectives, Policies and Risk Factors . . . . . . . . . .5

Total Return, Yield and Other Performance Information  . . . . . . 15

Management and Organization of the Funds . . . . . . . . . . . . . 16

Distribution Plan. . . . . . . . . . . . . . . . . . . . . . . . . 20

How to Buy Shares  . . . . . . . . . . . . . . . . . . . . . . . . 21

Tax-Saving Retirement Plans. . . . . . . . . . . . . . . . . . . . 22

Net Asset Value  . . . . . . . . . . . . . . . . . . . . . . . . . 23

When Your Account Will Be Credited . . . . . . . . . . . . . . . . 23

Exchanging Shares  . . . . . . . . . . . . . . . . . . . . . . . . 24

Other Information about Exchanging Shares. . . . . . . . . . . . . 24

Telephone Transactions . . . . . . . . . . . . . . . . . . . . . . 25

Signature Guarantees . . . . . . . . . . . . . . . . . . . . . . . 25

Special Services and Charges . . . . . . . . . . . . . . . . . . . 25

Redeeming Shares . . . . . . . . . . . . . . . . . . . . . . . . . 26

Other Information about Redemptions. . . . . . . . . . . . . . . . 27

Dividends, Capital Gains and Taxes . . . . . . . . . . . . . . . . 27


<PAGE>

Summary

Fund Expenses

Shareholder transaction costs 

     Maximum Sales Load on Purchases                            None
     Maximum Sales Load on Reinvested Dividends                 None
     Deferred Sales Load                                        None
     Redemption Fee                                             None *
     Exchange Fee                                               None

   
* If you request a redemption by wire transfer, you will normally be charged a
  $10 wire fee.
    
     
Annual fund operating expenses (as a percentage of average net assets): 
   

                                Growth   Appreciation
                                 Fund       Fund    Bond Fund
                                ------    ------    ---------
                                           
Management Fees                  0.65%     0.75%    0.60%
12b-1 Fees(1)                    0.25%     0.25%    0.25%
Other Expenses                   0.35%     0.33%    0.00% (2)

Total Fund Operating Expenses    1.25%     1.33%    0.85% (2)
               

(1)  The effect of a Rule 12b-1 plan is that long-term shareholders in the Funds
may pay more than the economic equivalent of the maximum front-end sales charge
permitted by rules of the National Association of Securities Dealers, Inc.

(2)  Pursuant to an Investment Advisory Agreement and an Administrative Services
Agreement, the Adviser pays all expenses of the Bond Fund except fees under the
Agreements, interest, taxes, brokerage commissions and extraordinary expenses. 
Fees under the Advisory Agreement and Administrative Services Agreement are
0.35% and 0.25%, respectively.
    

Example:  

We can illustrate these expenses with the example below.  You would pay the
following expenses on a $1,000 investment (assuming a 5% annual return and
redemption at the end of each period):

   
           Growth Fund    Appreciation Fund    Bond Fund

One Year       $13               $ 14             $ 9
Three Years    $40               $ 42             $27
Five Years     $69               $151             $73
Ten Year       $160              $ 47             $105
    

                                          3
<PAGE>


Explanation of Table:  The purpose of the table is to assist you in
understanding the various costs and expenses that an investor in the Funds would
bear directly (shareholder transaction costs) or indirectly (annual fund
operating expenses). 

The 5% rate used in the example is for illustration only and is not intended to
be indicative of the future performance of the Fund, which may be more or less
than the assumed rate.  Actual expenses may be more or less than those shown.

The Trust  
     Ariel Growth Fund, Ariel Appreciation Fund and Ariel Premier Bond Fund are
     series of the Ariel Growth Fund (d/b/a Ariel Investment Trust), an
     open-end, diversified management investment company which was organized as
     a Massachusetts business trust in 1986 and is registered under the
     Investment Act of 1940.  

     Investment Objectives

   
Ariel Growth Fund and Ariel Appreciation Fund
     The investment objective of the Stock Funds is to achieve long-term capital
     appreciation by investing primarily in equity securities of issuers that in
     the judgment of the Adviser are undervalued but demonstrate a strong
     potential for growth.  In seeking their objective, the Stock Funds attempt
     to discover relatively unknown and undervalued companies, primarily through
     the Adviser's intensive research.  The Growth Fund invests principally in
     companies with market capitalizations under $1.5 billion, with an emphasis
     on smaller capitalization (small-cap) stocks.  The Appreciation Fund
     focuses primarily on companies with market capitalizations of approximately
     $200 million to $5 billion and emphasizes medium size companies. 
    

Ariel Premier Bond Fund
     The Bond Fund seeks to maximize total return through a combination of
     income and capital appreciation.  The Fund generally invests in high
     quality, highly liquid fixed-income securities.  Normally, at least 80% of
     the Fund's total assets will be invested in fixed-income securities rated A
     or better by a nationally recognized securities rating organization (or
     deemed the equivalent by Lincoln Capital, if unrated).  The Fund seeks to
     achieve its investment objective by implementing decisions regarding the
     level and direction of interest rates (duration and yield curve decisions)
     and through the purchase and sale of securities to take advantage of
     perceived yield spread opportunities. 

     Investment Adviser, Sub-Adviser, Administrator and Distributor
     Ariel Capital Management, Inc. (the "Adviser") is the investment adviser
     for the Funds.  The Adviser also serves as the Administrator of the Bond
     Fund.  Ariel Distributors, Inc. is the principal underwriter of the Funds. 
     Lincoln Capital Management Company ("Lincoln Capital") serves as investment
     sub-adviser to the Bond Fund and is paid by the Adviser from its advisory
     fees.  See "Management and Organization of the Fund."

     Purchases, Exchanges and Redemptions
     The minimum initial investment for the Investor Class of the Bond Fund and
     for each of the Stock Funds is $1,000, or $250 for retirement accounts,
     unless you participate in an automatic investment plan, in which case there
     is a $50 minimum per investment.

     Subsequent minimum investments in each Fund may be made in the amount of
     $50.  Shares may be exchanged at no charge under certain circumstances at
     net asset value.  Accounts with a market value of less than $1,000 caused
     by shareholder redemptions are redeemable by the Funds.  See "How to Buy
     Shares," "Exchanging  Shares" and "Redeeming Shares."


                                          4
<PAGE>


     Shareholder Services
     Questions regarding the Funds or your account may be directed to Ariel
     Mutual Funds at 1-800-29-ARIEL (1-800-292-7435).  Written inquiries may be
     directed to Ariel Mutual Funds, 307 N. Michigan Avenue, Suite 500, Chicago,
     IL  60601.  During severe market conditions, the Adviser may experience
     difficulty in accepting telephone redemptions or exchanges, in which case
     you should mail your request.

                                Financial Highlights

   
The information set forth in the following tables is for each share of the Funds
outstanding during each of the periods shown and is derived from the Funds'
financial statements which are included in the September 30, 1997 Annual Report
to Shareholders.  The information in the table for each Fund is covered by the
Report of Ernst & Young LLP, the Funds' Independent Auditors.  The Annual Report
is available from the Funds by request.  The financial statements are
incorporated by reference into the Funds' Statements of Additional Information. 
The tables should be read in conjunction with the financial statements and their
related notes.
    


                                 [ARIEL GROWTH FUND]

                              [ARIEL APPRECIATION FUND]

                              [ARIEL PREMIER BOND FUND]


     Investment Objectives, Policies and Risk Factors

     Ariel Growth Fund

     Ariel Appreciation Fund

     The Stock Funds seek to provide long-term appreciation.

     Investment Objective
     The investment objective of the Ariel Growth and Ariel Appreciation Funds
     is to achieve long-term capital appreciation by investing primarily in
     equity securities of issuers that in the judgment of the Adviser are
     undervalued but demonstrate a strong potential for growth.  In seeking
     their objective, the Stock Funds attempt to discover relatively unknown and
     undervalued companies, principally through the Adviser's own intensive
     research.

The Stock Funds follow a long-term investment philosophy investing primarily in
equity securities which appear to be undervalued.

     The Growth Fund invests principally in companies with market
     capitalizations under $1.5 billion, with an emphasis on smaller
     capitalization (small-cap) stocks.

     The Appreciation Fund focuses primarily on companies with market
     capitalizations of approximately $200 million to $5 billion emphasizing
     medium sized companies.


                                          5
<PAGE>

     The Stock Funds will take reasonable risks in seeking to achieve their
     investment objective.  There is, of course, no assurance that these Funds
     will be successful in meeting their objective since there is risk involved
     in the ownership of securities.

     The Stock Funds do not trade or time the market for quick gains; rather,
     they follow a disciplined, conservative philosophy, investing for long-term
     capital appreciation in securities which appear to be undervalued relative
     to the market as a whole.

   
     The Adviser looks for issuers that provide quality products or services and
     have not attracted significant attention from securities analysts,
     institutional investors and the media.  In order to take advantage of the
     anticipated growth of their portfolios, the Stock Funds expect to hold
     investments for a relatively long period.  Occasionally, however,
     securities purchased on a long-term basis may be sold within 12 months
     after purchase in light of a change in the circumstances of a particular
     company or industry, or in general market or economic conditions.  The
     Stock Funds avoid issuers in cyclical, commodity-based, start-up and
     recently deregulated industries.
    

The Stock Funds look for issuers with long-term performance through different
economic cycles.  

     The Stock Funds are interested in issuers with conservative management and
     accounting and financial practices which have demonstrated long-term
     performance through various economic cycles.  Such an issuer's balance
     sheet should show a favorable cash position, limited debt and a reasonable
     amount of working capital.  The Adviser looks for equity securities trading
     at below average price-to-earnings ratios and a low price relative to the
     Adviser's evaluation of expected sales and earnings growth, book value and
     assets.  The Stock Funds are primarily interested in issuers which have
     demonstrated high earnings-per-share growth potential and the ability to
     achieve a high annual return on equity.

     Although any investment in securities carries risk, the conservative
     approach of the Stock Funds is designed to maximize growth in relation to
     the risks assumed.  Since the securities in which the Stock Funds seek to
     invest may be less actively traded than the securities of larger issuers,
     they may not always participate in market rallies to the same extent as
     more widely known securities.  Conversely, these securities may be expected
     to be somewhat less vulnerable during market downturns.  There is also
     somewhat less readily available information concerning these securities. 
     The issuers of these securities tend to have a relatively higher percentage
     of insider ownership.

The Stock Funds will normally invest at least 80% of the value of their
respective net assets in equity securities and may invest up to 20% of the value
of their assets in bonds, other debt obligations or fixed-income obligations.  

     Although there is no predetermined percentage of assets to be invested in
     stocks, bonds, or money market instruments, each Stock Fund will normally
     invest at least 80% of the value of its net assets in equity securities. 
     Such securities will include common stocks, convertible debt securities and
     preferred stocks.  The Stock Funds may invest up to 20% of the value of
     their assets in bonds, other debt obligations or fixed-income obligations,
     such as money market instruments, for defensive or liquidity purposes or
     pending the investment of the proceeds from the sale of portfolio
     securities.  Securities may be purchased subject to repurchase agreements
     with recognized securities dealers and banks.  If either Stock Fund has
     assumed a temporary defensive posture, there is no limitation on the
     percentage of its assets which may be invested in fixed-income obligations,
     including money market instruments, described below under "Debt
     Obligations."

Debt Obligations

                                          6
<PAGE>
   
     Debt obligations in which the Stock Funds may invest may be long-term,
     intermediate-term, short-term or any combination thereof, depending on the
     Adviser's evaluation of current and anticipated market patterns and trends.
     Such debt obligations consist of the following: corporate obligations which
     at the date of investment are rated within the four highest grades
     established by Moody's Investors Services, Inc. (Aaa, Aa, A, or Baa), or by
     Standard & Poor's Corporation (AAA, AA, A, or BBB), or, if not rated, are
     of comparable quality as determined by the Adviser (bonds rated Baa or BBB
     are considered medium grade obligations and have speculative
     characteristics); obligations issued or guaranteed as to principal by the
     United States Government or its agencies or instrumentalities; certificates
     of deposit, time deposits, and bankers' acceptances of U.S. banks and their
     branches located outside the U.S. and of U.S. branches of foreign banks,
     provided that the bank has total assets of at least one billion dollars or
     the equivalent in other currencies; commercial paper which at the date of
     investment is rated A-2 or better by Standard & Poor's, Prime-2 or better
     by Moody's or, if not rated, is of comparable quality as determined by the
     Adviser; and any of the above securities subject to repurchase agreements
     with recognized securities dealers and banks.  In the event any debt
     obligation held by a Stock Fund is downgraded below the lowest permissible
     grade, the Stock Fund is not required to sell the security, but the Adviser
     will consider the downgrade in determining whether to hold the security. 
     In any event, a Stock Fund will not purchase or, if downgraded, continue to
     hold debt obligations rated below the lowest permissible grade if more than
     5% of such Stock Fund's net assets would be invested in such debt
     obligations (including, for the purpose of this limitation, convertible
     debt securities rated below Baa or BBB, or if unrated, of comparable
     quality).
    

The Stock Funds may lend their portfolio securities.

     Each Stock Fund may lend its portfolio securities in order to earn
     additional income, but will not engage in such a transaction if more than
     5% of its net assets would be subject to such loans.

The Stock Funds follow a policy of responsible investment.
     The Stock Funds currently observe the following operating policies, which
     may be changed by the Board of Trustees: (1) the Adviser actively seeks
     companies that achieve excellence in both financial return and
     environmental soundness, selecting issuers that take positive steps toward
     preserving our environment and avoiding companies with poor environmental
     records; and (2) neither Stock Fund will make investments in issuers whose
     primary source of revenue derives from the production of tobacco products;
     (3) neither Stock Fund will invest in issuers primarily engaged in the
     manufacture of weapons systems, the production of nuclear energy, or the
     manufacture of equipment to produce nuclear energy.

     The Stock Funds have engaged the services of Franklin Research and
     Development Corporation of Boston ("Franklin") to provide environmental
     screening for all issuers selected.  Franklin provides information and
     opinions on the companies' environmental histories.  However, Franklin does
     not make recommendations or provide investment advice concerning the
     purchase or sale of securities.

     The Adviser believes that there are long-term benefits inherent in an
     investment philosophy that demonstrates concern for human rights, economic
     priorities and international relations.

Additional Policies

     See "All Funds" for additional policies of the Stock Funds. 

     Ariel Premier Bond Fund

The Bond Fund seeks to maximize total return. 

                                          7
<PAGE>

The Bond Fund seeks to achieve its investment objective by implementing
decisions regarding the level and direction of interest rates (duration and
yield curve decisions) and through the purchase and sale of securities to take
advantage of perceived yield spread opportunities.

     Investment Objective

     The investment objective of the Bond Fund is to seek to maximize total
     return through a combination of income and capital appreciation.  The Fund
     generally invests in high quality, highly liquid fixed-income securities. 
     Normally, the Bond Fund will invest at least 80% of its total assets in
     fixed-income securities rated A or better by Moody's Investors Service,
     Inc. ("Moody's") or Standard and Poor's Corporation ("S & P") or that are
     not rated by Moody's or S & P but are deemed to be of comparable quality by
     Lincoln Capital ("A-Grade Securities").  In the event that downgrades of
     securities cause less than 80% of the Fund's total assets to be invested in
     A-Grade Securities, Lincoln Capital will take steps as soon as practicable
     to increase the Fund's holdings of A-Grade Securities.  The Fund seeks to
     achieve its investment objective by implementing decisions regarding the
     level and direction of interest rates (duration and yield curve decisions)
     and through the purchase and sale of securities to take advantage of
     perceived yield spread opportunities. 

     The Bond Fund may purchase any type of income producing security including,
     but not limited to, U.S. government and agency obligations, mortgage-backed
     and other asset-backed securities, commercial paper and corporate debt
     securities. 

     The Bond Fund will take reasonable risks in seeking to achieve its
     investment objective.  There is, of course, no assurance that the Fund will
     be successful in meeting its objective since there is risk involved in the
     ownership of securities. 

Duration

     Duration is a measure of the expected life of a fixed-income security that
     was developed as a more precise alternative to the concept of
     term-to-maturity.  Duration incorporates a bond's yield, coupon interest
     payments, final maturity and call features into one measure.  Duration is
     also a way to measure the interest-rate sensitivity of the Bond Fund's
     portfolio.  The duration of the Bond Fund is calculated by averaging the
     durations of the bonds held by the Fund with each duration "weighted"
     according to the percentage of net assets that it represents.  In general,
     the higher the Bond Fund's duration, the greater the appreciation or
     depreciation of the Fund's assets will be when interest rates change.  In
     its attempt to maximize total return, Lincoln Capital intends to vary the
     duration of the Bond Fund, as described below, depending on its outlook for
     interest rates.

Investment Process

The portfolio's average duration will be longer when Lincoln Capital believes
that interest rates will fall and shorter when it believes interest rates will
rise.

     Interest Rate Decisions

     Lincoln Capital seeks to achieve a duration equal to the duration of the
     domestic, investment grade bond market when its outlook for interest rates
     is neutral.  The portfolio's average duration will be longer when Lincoln
     Capital believes that interest rates will fall and shorter when it believes
     interest rates will rise.  The stronger Lincoln Capital's conviction, the
     further the Bond Fund's duration will diverge from the duration of the
     domestic, investment grade bond market, which generally averages
     approximately five years.  The Bond Fund's duration will normally range
     from four to six years.  It is expected that only on rare occasions 


                                          8
<PAGE>


     will the Bond Fund's duration reach the extreme positions (plus or minus 2
     years from the duration of the domestic, investment grade bond market).

   
     The Bond Fund's duration relative to that of the domestic, investment grade
     bond market is established in periodic strategy meetings of a committee
     consisting of senior officers of Lincoln Capital.  Changes in the Bond
     Fund's duration are based on a disciplined evaluation of three factors:
    

     (a)  Economic activity and capacity for growth;
     (b)  U.S. Government monetary policy; and
     (c)  Expectations for inflation.

     The committee evaluates the above factors and weights each one to determine
     a precise duration position relative to the duration of the domestic,
     investment grade bond market.  Over time, changes in the duration position
     take the form of a series of small movements; generally in one-half year
     increments. 

     Once the Bond Fund's specific duration position has been established,
     remaining decisions (i.e. yield curve structure, sector emphasis and issue
     selections), are made and implemented by Lincoln Capital's Fixed Income
     Group working as a team.  These decisions are based on Lincoln Capital's
     belief that yield spreads reflect fundamental risk premiums.  These
     premiums reflect compensation for accepting credit risk or uncertain cash
     flow patterns (timing and amounts).  Lincoln Capital's judgments on these
     spreads are influenced by its outlook for business conditions and for the
     volatility of interest rates.  These judgments are supported by studies of
     historical spread relationships and break-even spread analysis.  Cash
     equivalents may be used to create the desired yield curve structure. 
     Portfolio positions are continually monitored and evaluated.

     Sector Emphasis and Security Selection

     Sector and security selection decisions are based on Lincoln Capital's
     judgment and are supported by studies of historical spread relationships,
     break-even yield spread analysis, and model driven portfolio return
     projections.  In order to monitor yield spreads, Lincoln Capital maintains
     extensive yield spread data banks and has direct computer access to
     extensive historical yield spread data and specific issuer data. 

   
     Credit research consists of internally generated fundamental analysis and
     input from rating agencies and other sources.  A committee at Lincoln
     Capital reviews those corporate bonds that are considered for purchase.  By
     focusing on higher-rated securities and by comparing judgments among
     outside sources to internal credit judgments, Lincoln Capital believes that
     credit risk can be managed and reduced.  It is unlikely that Lincoln
     Capital will seek to enhance the Bond Fund's return by anticipating an
     improvement in the creditworthiness of specific corporate issuers,
     particularly lower rated issuers. 
    

Research Process

     Virtually 100% of Lincoln Capital's fixed-income research is generated
     in-house.  Each member of the investment staff serves as a portfolio
     manager and a research analyst.  There is no lapse between the development
     of an investment idea and its execution.  Fundamental research includes
     economic analysis, sector and issuer spread relationships, and credit
     research.  In the area of quantitative research Lincoln Capital owns
     proprietary models developed in-house.  These include:  a mortgage
     prepayment model, mortgage valuation model, total return analytics for
     securities with complex cash flows, risk exposure models, and yield curve
     analytics.


                                          9
<PAGE>

Bond Fund Investments

     In General.  The Bond Fund may invest in fixed-income securities which are
     obligations of, or guaranteed by the U.S. Government, its agencies or
     instrumentalities ("U.S. Government Securities").  U.S. Government
     Securities are unrated but are generally considered high-grade securities. 
     The Fund may also invest in other investment grade fixed-income securities,
     including corporate bonds, mortgage-backed and other asset-backed
     securities and other high quality, liquid investments.  


     The debt securities in which the Bond Fund will invest are investment grade
     securities.

Generally at least 80% of the Bond Fund's total assets will be invested in
A-Grade Securities, which are in the three highest grades, or the equivalent,
while 20% of the total assets are not so limited. 

   
     The debt securities in which the Bond Fund will invest are investment grade
     securities.  These are securities rated in the four highest grades assigned
     by Moody's(Aaa, Aa, A and Baa) or S & P (AAA, AA, A and BBB) or that are
     not rated by Moody's or S & P but deemed to be of comparable quality by
     Lincoln Capital.  Generally, at least 80% of the Bond Fund's total assets
     will be invested in A-Grade Securities, which are in the three highest
     grades, or the equivalent, while 20% of the total assets are not so
     limited.  The lowest investment grade securities (Baa and BBB) have
     speculative characteristics because changes in economic conditions or other
     circumstances are more likely to lead to a weakened capacity to make
     principal and interest payments.  The Bond Fund will not invest in
     securities below investment grade (so called "junk bonds").  In the event
     of a downgrade of a debt security held by the Bond Fund to below investment
     grade, the Bond Fund is not usually required to automatically sell the
     issue, but Lincoln Capital will consider whether to continue holding the
     security.  However, if such a downgrade would cause more than 5% of net
     assets to be invested in debt securities below investment grade, Lincoln
     Capital will take steps as soon as practicable to reduce the proportion of
     debt below investment grade to 5% of net assets or less.
    

     The value of the shares issued by the Bond Fund is not guaranteed and will
     fluctuate with changes in the value of the Fund's portfolio.  Generally
     when prevailing interest rates rise, the value of the Bond Fund's portfolio
     is likely to decline and when prevailing interest rates decline, the value
     of the Bond Fund's portfolio is likely to rise.

     U.S. Government Securities  

     There are two basic types of U.S. Government Securities: (1) direct
     obligations of the U.S. Treasury, and (2) obligations issued or guaranteed
     by an agency or instrumentality of the U.S. Government.  Agencies and
     instrumentalities of the U.S. Government include Federal Farm Credit System
     ("FFCS"), Student Loan Marketing Association ("SLMA"), Federal Home Loan
     Mortgage Corporation ("FHLMC"), Federal Home Loan Banks ("FHLB"), Federal
     National Mortgage Association ("FNMA") and Government National Mortgage
     Association ("GNMA").  Some obligations issued or guaranteed by agencies or
     instrumentalities, such as those issued by GNMA, are fully guaranteed by
     the U.S. Government.  Others, such as FNMA bonds, rely on the assets and
     credit of the instrumentality with limited rights to borrow from the U.S.
     Treasury.  Still other securities, such as obligations of the FHLB, are
     supported by more extensive rights to borrow from the U.S. Treasury.

     The guarantees of the U.S. Government, its agencies and instrumentalities
     are guarantees of the timely payment of principal and interest on the
     obligations purchased and not of their market value. 

                                          10
<PAGE>

     Mortgage Related Securities

     Pass-Through Securities.  The Bond Fund may invest in GNMA Certificates
     which are mortgage-backed securities representing part ownership of a pool
     of mortgage loans.  A "pool" or group of such mortgages is assembled and,
     after being approved by GNMA, is offered to investors through security
     dealers.  Once approved by GNMA, the timely payment of interest and
     principal on each mortgage is guaranteed by GNMA and backed by the full
     faith and credit of the U.S. Government.  GNMA Certificates differ from
     bonds in that principal is paid back monthly by the borrower over the term
     of the loan rather than returned in a lump sum at maturity.  GNMA
     Certificates are called "pass-through" securities because both interest and
     principal payments (including prepayments) are passed through to the holder
     of the Certificate.  

     The Bond Fund may also invest in pools of mortgages which are issued or
     guaranteed by other agencies of the U.S. Government such as FNMA or FHLMC. 
     FNMA and FHLMC Certificates are similar to GNMA Certificates except that
     timely payment of interest and principal of each mortgage may not be
     guaranteed by the full faith and credit of the U.S. Government.  

   
     The average life of pass-through pools varies with the maturities of the
     underlying mortgage instruments.  A pool's term may be shortened or
     lengthened by unscheduled or early payment, or by slower than expected
     prepayment, of principal and interest on the underlying mortgages.  The
     occurrence of mortgage prepayments is affected by the level of interest
     rates, general economic conditions, the location and age of the mortgage
     and other social and demographic conditions.  As prepayment of individual
     pools varies widely, it is not possible to precisely predict the average
     life of a particular pool.  

     Collateralized Mortgage Obligations.  The Bond Fund may also invest in
     collateralized mortgage obligations ("CMOs").  CMOs are debt securities
     issued by a corporation, trust or custodian or by a U.S. Government agency
     or instrumentality, which are collateralized by mortgage pass-through
     securities.  CMOs differ from the pass-through securities discussed above
     in that a CMO is divided into separate pieces (each a "tranche") with cash
     flows from the securities being allocated to various tranches in a
     predetermined, specified order.  Each tranche has a stated maturity (the
     latest date by which the tranche can be completely repaid, assuming no
     prepayments) and has an average life (the average of the time to receipt of
     a principal payment weighted by the size of the principal payment).  The
     average life is typically used as a proxy for maturity because the debt is
     amortized (repaid a portion at a time), rather than being paid off entirely
     at maturity, as would be the case in a straight debt instrument. 
     Investments in CMO's are limited to Planned Amortization Class and
     sequential issues.  The Bond Fund will normally invest only in CMOs that
     are issued, or have cash flow guaranteed, by U.S. Government agencies or
     instrumentalities.  Such CMOs will generally be deemed to be U.S.
     Government Securities for purposes of various portfolio restrictions
     described in this Prospectus or the Statement of Additional Information. 
    

     Interest and principal payments from the underlying mortgages are typically
     used to pay interest on all CMO tranches and to retire successive class
     maturities in a sequence.  Thus, the issuance of CMO tranches with varying
     maturities and interest rates may result in greater predictability of
     maturity with one tranche and less predictability of maturity with another
     tranche than a direct investment in a mortgage-backed pass-through security
     (such as a GNMA Certificate).  Tranches with shorter maturities typically
     have a lower volatility and lower yield while those with longer maturities
     typically have higher volatility and higher yield.  Thus, investments in
     CMOs can carry more or less risk than mortgage pass-through securities and
     offer more defensive or aggressive investment alternatives.
     
     Mortgage Dollar Rolls.  The Bond Fund may enter into "mortgage dollar
     rolls," which are transactions in which the Fund sells a mortgage-related
     security to a dealer and simultaneously agrees to repurchase a similar
     security (but not the same security) in the future at a pre-determined
     price.  See "Mortgage Dollar 


                                          11
<PAGE>

     Rolls" in the Bond Fund's Statement of Additional Information for more
     information regarding this type of transaction.

     Additional Risks. Investments by the Bond Fund in mortgage-related U.S.
     Government Securities, such as GNMA Certificates, and CMOs also involve
     other risks.  The yield on a pass-through security is typically quoted
     based on the maturity of the underlying instruments and the associated
     average life assumption.  Actual prepayment experience may cause the yield
     to differ from the assumed average life yield.  Accelerated prepayments
     adversely impact yields for pass-throughs purchased at a premium; the
     opposite is true for pass-throughs purchased at a discount.  During periods
     of declining interest rates, prepayment of mortgages underlying
     pass-through certificates can be expected to increase.  When the mortgage
     obligations are prepaid, the Bond Fund reinvests the prepaid amounts in
     securities, the yields of which reflect interest rates prevailing at that
     time.  Therefore, the Bond Fund's ability to maintain a portfolio of
     high-yielding, mortgage-backed securities will be adversely affected to the
     extent that prepayments of mortgages must be reinvested in securities which
     have lower yields than the prepaid mortgages.  Moreover, prepayments of
     mortgages which underlie securities purchased at a premium could result in
     capital losses.  Investment in such securities could also subject the Fund
     to "maturity extension risk" which is the possibility that rising interest
     rates may cause prepayments to occur at a slower than expected rate.  This
     particular risk may effectively change a security which was considered a
     short or intermediate-term security at the time of purchase into a
     long-term security.  Long-term securities generally fluctuate more widely
     in response to changes in interest rates than short or intermediate-term
     securities.

     Other Asset-Backed Securities

     The Bond Fund may invest in asset-backed securities which are backed by
     assets other than mortgages.  These securities are collateralized by
     shorter term loans such as automobile loans, computer leases, or credit
     card receivables.  The payments from the collateral are passed through to
     the security holder.  The collateral behind asset-backed securities tends
     to have prepayment rates that do not vary with interest rates.  In
     addition, the short-term nature of the loans reduces the impact of any
     change in prepayment level.  These securities are generally issued as the
     debt of a special purpose entity organized solely for the purpose of owning
     such assets and issuing such debt.

     Credit Support.  Asset-backed securities are backed by a diversified pool
     of assets representing the debt of a number of different parties.  To
     lessen the effect of failures by the debtors to make payments, such
     securities may contain elements of credit support.  Such credit support
     falls into two classes:  liquidity protection and protection against
     ultimate default by debtors on the underlying assets.  Liquidity protection
     refers to the provision of advances, generally by the entity administering
     the pool of assets, to ensure that scheduled payments on the underlying
     pool are made in a timely fashion.  Protection against ultimate default
     ensures repayment of at least a portion of the debt in the pool.  Such
     protection may be provided through guarantees, insurance policies or
     letters of credit obtained from third parties, through various means of
     structuring the transaction or through a combination of such approaches.  

     Additional Risks.  Issuers of asset-backed securities generally hold no
     assets other than the assets underlying such securities and any credit
     support provided.  As a result, although payments on asset-backed
     securities are obligations of the issuers, in the event of defaults on
     underlying assets not covered by any credit support, the issuers are
     unlikely to have sufficient assets to satisfy their obligations on the
     related asset-backed securities.  The loans underlying these securities are
     subject to prepayments which can decrease maturities and returns.  Due to
     the possibility that prepayments will alter the cash flow on asset-backed
     securities, it is not possible to determine in advance the actual final
     maturity date or average life.  Faster prepayment will shorten the average
     life and slower prepayments will lengthen it.  However, it is possible to
     determine what the range of that movement could be and to calculate the
     effect that it will have on the price of the security.  


                                          12
<PAGE>

     The values of these securities are ultimately dependent upon payment of the
     underlying loans by individuals, and the holders, such as the Bond Fund,
     generally have no recourse against the originator of the loans.  The Bond
     Fund as a holder of these securities may experience losses or delays in
     payment if the original payments of principal and interest are not made to
     the issuer with respect to the underlying loans.  

     Corporate Bonds

The Bond Fund will normally invest in corporate issues that are rated A or
better by Moody's or S&P or which are not rated by Moody's or S&P but are deemed
by Lincoln Capital to be of comparable quality.

     The Bond Fund may invest in investment grade corporate bonds.  Usually, no
     single corporate issuer will comprise more than 5% of the Bond Fund's total
     assets at the time of investment.  The value of lower-rated corporate debt
     securities is more sensitive to economic changes or individual corporate
     developments than higher-rated investments.  The Bond Fund will normally
     invest in corporate issues that are rated A or better by Moody's or S & P
     or which are not rated by Moody's or S & P but are deemed by Lincoln
     Capital to be of comparable quality.  

Yankee Bonds

   
     Some of the debt securities in which the Bond Fund may invest are known as
     "Yankee Bonds."  Yankee Bonds are U.S. dollar-denominated debt securities
     issued by foreign entities.  These bonds are not subject to currency
     fluctuation risks.  However, currency fluctuations may adversely affect the
     ability of the borrower to repay the debt and may increase the possibility
     of default.  In addition, the issuing entities are sometimes not subject to
     the same accounting principles as U.S. corporations.  The risks of
     investment in foreign issuers may include expropriation or nationalization
     of assets, confiscatory taxation, exchange controls and limitations on the
     use or transfer of assets, and significant withholding taxes.  Lincoln
     Capital will take these factors into consideration when determining what
     Yankee Bonds the Fund will purchase.  Other than Yankee Bonds, the Bond
     Fund does not intend to invest in securities of foreign issuers.
    

Delayed Delivery Transactions

The Bond Fund may purchase and sell securities on a when-issued basis.

     The Bond Fund may purchase or sell securities on a when-issued basis. 
     When-issued securities are securities purchased at a certain price even
     though the securities may not be delivered for up to 90 days.  The Bond
     Fund will maintain, with its Custodian, a separate account with a
     segregated portfolio of liquid, high-grade debt securities or cash in an
     amount at least equal to these commitments.  The Bond Fund will generally
     earn income on assets deposited in the segregated account.  No payment or
     delivery is made by the Bond Fund in a when-issued transaction until it
     receives payment or delivery from the other party to the transaction. 
     Although the Bond Fund receives no income from the above described
     securities prior to delivery, the market value of such securities is still
     subject to change.  As a consequence, it is possible that the market price
     of the securities at the time of delivery may be higher or lower than the
     purchase price.  The Bond Fund does not intend to remain fully invested
     when such purchases are outstanding.  However, if the Bond Fund were to
     remain substantially fully invested at a time when delayed delivery
     purchases are outstanding, the delayed delivery purchases could result in a
     form of leveraging.  When the Bond Fund has sold a security on a delayed
     delivery basis, the Bond Fund does not participate in future gains or
     losses with respect to the security.  If the other party to a delayed
     delivery transaction fails to deliver or pay for the securities, the Bond
     Fund could miss a favorable price or yield opportunity or could suffer a
     loss.  The Bond Fund may dispose of or renegotiate a delayed delivery
     transaction after it is entered into, and may sell when-issued securities
     before they are delivered, which may result in a capital gain or loss.  

   
    
                                          13
<PAGE>

Certain Investment Restrictions for the Bond Fund
     In addition to other non-fundamental restrictions as described herein and
     in the Bond Fund's Statement of Additional Information, the Bond Fund will
     not (i) invest in securities that are rated below investment grade or are
     deemed by Lincoln Capital to be the equivalent, if unrated; (ii) enter into
     reverse repurchase agreements;  (iii) engage in options or futures
     transactions; (iv) purchase foreign securities other than Yankee Bonds or
     (v) use leverage except to the extent that certain strategies, such as
     delayed-delivery transactions, may be considered leveraged transactions by
     the Securities and Exchange Commission.

Portfolio Transactions of the Bond Fund
     Lincoln Capital is responsible for the placement of portfolio transactions.
     It is the Bond Fund's policy to seek to place portfolio transactions with
     brokers or dealers on the basis of best execution.  

   
     Generally, Lincoln Capital manages the Bond Fund without regard to
     restrictions on portfolio turnover, except those imposed on its ability to
     engage in short-term trading by provisions of the federal tax laws. 
     Trading in fixed-income securities does not generally involve the payment
     of brokerage commissions, but does involve indirect transaction costs.  The
     higher the turnover rate of the Bond Fund's portfolio, the higher the
     transaction costs borne by the Bond Fund will be.  See "Financial
     Highlights" for the Fund's turnover for the fiscal year ended September 30,
     1997.
    

All Funds

Borrowing

     Stock Funds.  The Stock Funds may not borrow money, except temporarily for
     emergency purposes in an amount not exceeding 10% of total assets in order
     to meet redemption requests without immediately selling portfolio
     securities.

     Bond Fund.  The Bond Fund may not borrow money to purchase securities.  The
     Bond Fund may borrow money only for temporary or emergency purposes, and
     then only from banks in an amount not exceeding 33-1/3% of the value of the
     Bond Fund's total assets (including the amounts borrowed).  The Bond Fund
     will not purchase securities when its borrowings, less amounts receivable
     on sales of portfolio securities, exceed 5% of total assets.


                                          14
<PAGE>

Illiquid Securities  

   
     The Stock Funds.  The Stock Funds will not purchase illiquid securities if
     such a purchase would cause more than 10% of the Growth Fund's total
     assets, or 5% of the Appreciation Fund's total assets, to be invested in
     such securities.
    

     The Bond Fund.  The Bond Fund will not purchase or hold illiquid securities
     if more than 15% of the Bond Fund's net assets would then be illiquid.  If
     at any time more than 15% of the Bond Fund's net assets are illiquid, steps
     will be taken as soon as practicable to reduce the percentage of illiquid
     assets to 15% or less.

Repurchase Agreements 
     All of the Funds may invest in repurchase agreements.  A repurchase
     agreement is an arrangement under which a Fund buys securities and the
     seller (a bank or securities dealer that the Adviser or Lincoln Capital
     believes to be financially sound) simultaneously agrees to repurchase the
     securities within a specified time at a higher price that includes an
     amount representing interest on the purchase price.  In the event of a
     default by a seller of a repurchase agreement, the Funds could experience
     both delays in liquidating the underlying securities and potential losses. 
     The Funds will normally invest in repurchase agreements maturing in less
     than seven days.  Repurchase agreements maturing in more than seven days
     are deemed to be illiquid and thus subject to the Funds' limitations on
     investments in illiquid securities described above.

   
Investment Diversification and Concentration
     The Stock Funds will not purchase the security of any issuer (other than
     cash items or U.S. Government Securities) if such purchase would cause a
     Stock Fund's holdings of that issuer to amount to more than 5% of the
     Fund's total assets at the time of purchase. 

     As to seventy-five percent of its total assets, the Bond Fund will not
     purchase the security of any issuer (other than cash items or U.S.
     Government Securities) if such purchase would cause the Bond Fund's
     holdings of that issuer to amount to more than 5% of the Bond Fund's total
     assets at the time of purchase. The remaining 25% of the Bond Fund's total
     assets are not so limited which allows Lincoln Capital to invest more than
     5% of the Bond Fund's total assets in a single issuer.  In the event that
     Lincoln Capital chooses to make such an investment, it may expose the Bond
     Fund to greater risk.  However, Lincoln Capital does not intend to (i) make
     any investment in a single corporate issuer if, at that time, such issuer
     would represent more than 5% of the Fund's total assets, or (ii) make any
     investment in a single issuer of asset-backed securities if at that time,
     such issuer would represent more than 10% of the Bond Fund's total assets.

     The Funds will not concentrate 25% or more of their respective total assets
     in any one industry.  U.S. Government Securities are not subject to this
     limitation.
    

Fundamental policies may not be changed without shareholder approval.
     The investment restrictions set forth in the Statements of Additional
     Information as fundamental policies and the investment objectives are
     fundamental policies and may not be changed without a shareholder vote. 
     All other investment policies of the Funds are not fundamental and may be
     changed by the Board of Trustees.  Any percentage restrictions (except
     those Bond Fund restrictions with respect to borrowing and illiquid
     securities) apply at the time of investment without regard to later
     increases or decreases in the values of securities or total or net assets.


                                          15
<PAGE>

     Total Return, Yield and Other Performance Information 

The Funds may advertise total return and yield, which are based on historical
results and are not intended to indicate future performance. 
     Total Return.  A total return is a change in the value of an investment
     during the stated period, assuming all dividends and capital gain
     distributions are reinvested.  A cumulative total return reflects
     performance over a stated period of time.  An average annual total return
     is the hypothetical annual compounded return that would have produced the
     same cumulative total return if the performance had been constant over the
     entire period.  Because average annual returns tend to smooth out
     variations in the returns, you should recognize that they are not the same
     as actual year-by-year results.  In addition to advertising average annual
     returns for the required standard periods, such returns may be quoted for
     other periods, including periods of less than one year.  Further
     information about each Fund's performance is contained in the Annual Report
     to Shareholders, which may be obtained from the Funds without charge.

   
     Yield.  Quotations of yield for the Bond Fund will be based on the
     investment income per share (as defined by the Securities and Exchange
     Commission) during a particular 30-day period (including dividends and
     interest), less expenses accrued during the period ("net investment
     income"), and will be computed by dividing net investment income by the
     maximum public offering price per share on the last day of the period. 

     The Funds also may provide current distribution information to their
     shareholders in shareholder reports or other shareholder communications or
     in certain types of sales literature provided to prospective investors. 
     Current distribution information for the Funds will be based on
     distributions for a specified period (i.e., total dividends from net
     investment income), divided by the net asset value per share on the last
     day of the period and annualized.  Current distribution rates differ from
     standardized yield rates in that they represent what a Fund has declared
     and paid to shareholders as of the end of a specified period rather than a
     Fund's actual net investment income for that period.  
    

     Performance information for the Bond Fund may be compared to various
     unmanaged indices, such as the Lehman Brothers Aggregate Bond Index, the
     Lehman Brothers Government/Corporate Index and the Salomon Brothers Broad
     Investment-Grade Bond Index.  Performance information for the Stock Funds
     may be compared to the S&P 500 and the Russell 2500.  In addition,
     performance of each of the Funds may be compared to indices prepared by
     Lipper Analytical Services, and other entities or organizations which track
     the performance of investment companies or investment advisers.  Unmanaged
     indices (i.e., other than Lipper) generally do not reflect deductions for
     administrative and management costs and expenses.  Any performance
     information should be considered in light of each Fund's investment
     objectives and policies, characteristics and quality of the portfolio and
     the market conditions during the time period indicated, and should not be
     considered to be representative of what may be achieved in the future.  For
     a description of the methods used to determine total return for the Funds
     and yield and distribution rates for the Bond Fund, see the Statements of
     Additional Information.

     From time to time, the Funds or their affiliates may provide information
     including, but not limited to, general economic conditions, comparative
     performance data and rankings with respect to comparable investments for
     the same period and for unmanaged market indices described in the
     Statements of Additional Information.

     Management and Organization of the Funds 

     Each Fund is a series of the Ariel Growth Fund (doing business as Ariel
     Investment Trust) (the "Trust"), an open-end diversified management
     investment company organized as a Massachusetts business trust on August 1,
     1986.


                                          16
<PAGE>
   
     The Trust is not required to hold annual shareholder meetings.  Shareholder
     meetings are held when they are required under the Investment Company Act
     of 1940 or otherwise called for special purposes.  Special meetings may be
     called by the Trustees for purposes such as electing and removing Trustees,
     changing fundamental policies, or approving an investment advisory
     contract.  Trustees may be removed at a special meeting of shareholders by
     a vote of two-thirds of the outstanding shares.  Special meetings may also
     be called when requested in writing by the holders of 10% or more of the
     shares eligible to vote at such meetings. As a shareholder, you receive one
     vote for each share of the Funds you own.
    

     The Stock Funds each offer only one class of shares.  Shares of the Bond
     Fund are currently offered in two classes, the Institutional Class and the
     Investor Class.  The Investor Class shares require an initial minimum
     investment of $1,000 or more.  See "How to Buy Shares - Initial Purchase." 
     The Institutional Class requires an initial minimum investment of
     $1,000,000 and is sold primarily to institutional investors.  The Board of
     Trustees may offer additional classes of any of the Funds in the future and
     may at any time discontinue the offering of any class of shares.  Shares
     have no preemptive or subscription rights and are freely transferable. 
     Each share of the Bond Fund represents an interest in the assets of the
     Bond Fund and has identical voting, dividend, liquidation and other rights
     and the same terms and conditions as any other shares except that (i) the
     expenses that are specific to one class, such as distribution expenses and
     administrative fees, are borne solely by such class and (ii) each class of
     shares votes separately with respect to matters in which the interests of
     one class differ from the interests of the other class or on any other
     matters for which separate class voting is appropriate under applicable
     law.

     Because the Investor Class of the Bond Fund incurs higher administrative
     and distribution fees, that class will have a higher expense ratio and will
     have correspondingly lower returns than the Bond Fund's Institutional
     Class.  You may call 1-800-29-ARIEL (1-800-292-7435) for more information
     regarding the Institutional Class of the Bond Fund.

The Board of Trustees supervises the Funds' activities and reviews the Trust's
contracts with companies that provide services to the Funds. 

     Board of Trustees 

     BERT N. MITCHELL, CPA
     Chairman and Chief Executive Officer, Mitchell & Titus, LLP (independent
     accountants)

     MARIO L. BAEZA, ESQ.
     Chairman and Chief Executive Officer, Latin America Equity Partners, L.P.
     (venture capital)

   
     JAMES W. COMPTON
     President and Chief Executive Officer, Chicago Urban League (non-profit
     organization)
     
     WILLIAM C. DIETRICH, CPA
     Chief Financial Officer, Streamline Mid-Atlantic, Inc. (computerized
     shopping service)
    

     ROYCE N. FLIPPIN, JR.
     President, Flippin Associates (consultants); formerly Director of Program
     Advancement, Massachusetts Institute of Technology 


                                          17
<PAGE>

     JOHN G. GUFFEY, JR.
     Chair, Calvert Social Investment Foundation; Treasurer and Director, Silby,
     Guffey and Co., Inc. (venture capital) 

     MELLODY L. HOBSON
     Senior Vice President, Director of Marketing, Ariel Capital Management,
     Inc.

     CHRISTOPHER G. KENNEDY
     Executive Vice President and Director, Merchandise Mart Properties, Inc.
     (real estate management)

     ERIC T. McKISSACK, CFA
     Vice Chairman and Co-Chief Investment Officer, Ariel Capital Management,
     Inc.

Ariel Capital Management, Inc. serves as the Adviser to the Stock Funds. 

   
     The Adviser is a privately held investment management firm, controlled by
     John W. Rogers, Jr. and owned by its employees.  The Adviser is located at
     307 N. Michigan Avenue, Suite 500, Chicago, Illinois 60601.  As of December
     31, 1997, the Adviser had assets under management of just over
     $1.9 billion, including assets of the Funds.

     Subject to the overall supervision of the Board of Trustees and pursuant to
     the Management Agreement, the Adviser acts as the manager of the Stock
     Funds.  The Adviser manages the investment operations for the Stock Funds. 
     In addition, the Adviser is responsible for performing or overseeing the
     Stock Funds' management and administration, providing the Stock Funds with
     office space, executive and other personnel and paying the salaries and
     fees of all Trustees who are affiliated persons.  The Stock Funds pay all
     other operating expenses.  The Adviser is paid a fee for its services to
     the Growth Fund at the annual rate of 0.65% of the Growth Fund's average
     daily net assets for the first $500 million; 0.60% of the next $500 million
     and 0.55% of average daily net assets over $1 billion; and for its services
     to the Appreciation Fund at the annual rate of 0.75% of the Appreciation
     Fund's average daily net assets for the first $500 million; 0.70% of the
     next $500 million and 0.65% for average daily net assets over $1 billion.
    

Ariel Capital Management, Inc. also serves as the Adviser and the Administrator
to the Bond Fund. 

   
     Subject to the overall supervision of the Board of Trustees and pursuant to
     the Investment Advisory Agreement, Ariel Capital Management, Inc. (the
     "Adviser") acts as the manager to the Bond Fund.  The Adviser is
     responsible for certain management services and pays all of the Bond Fund's
     expenses other than the Adviser's fees under the Investment Advisory
     Agreement and the Administrative Services Agreement, the expenses assumed
     by the Adviser under the Administrative Services Agreement, interest,
     taxes, brokerage commissions, and extraordinary expenses.  Under the
     Investment Advisory Agreement, the Adviser is paid a fee based on the
     average daily net assets of the Bond Fund at the annual rate of 0.35%.
    

     The Adviser is also the Administrator to the Bond Fund.  Under the
     Administrative Services Agreement, the Administrator is responsible for
     providing, arranging for or facilitating transfer agency and shareholder
     servicing; the preparation, printing and distribution of notices, proxy
     materials, reports to regulatory bodies and reports to shareholders related
     to a specific class; state securities qualifications; SEC registrations and
     shareholder meetings.  The Administrator pays all of the Bond Fund's
     expenses related to the services to be provided under the Administrative
     Services Agreement, all fees and expenses of Trustees incurred as a result
     of a matter related solely to one class of shares of the Bond Fund and,
     generally, the Bond Fund's auditing and legal fees for professional
     services related solely to one class of the shares of the Bond Fund.  The
     Administrator is not responsible for paying any legal, accounting or other
     expenses related to any litigation affecting the Bond Fund.  For services
     under the Administrative Services Agreement, the Investor Class pays a fee
     based on the average daily net assets of the Investor 


                                          18
<PAGE>

     Class at the annual rates of 0.25% if such net assets are less than
     $1 billion; 0.225% if such net assets are at least $1 billion, but less
     than $2 billion and 0.20% if such net assets are at least $2 billion or
     more.   

   
Sub-Administrator
     The Adviser has entered into an agreement with Sunstone Financial Group,
     Inc. ("Sunstone") under which Sunstone provides certain administrative
     services to the Funds.  Under the direction and supervision of the Adviser,
     Sunstone performs fund accounting services and prepares reports for the
     Board of Trustees.  For its services, Sunstone receives from the Adviser
     0.041% of the average net assets of the Funds.  Sunstone does not receive
     any compensation from the Funds.
    

Sub-Adviser for the Bond Fund
     Lincoln Capital Management Company ("Lincoln Capital"), 200 South Wacker
     Drive, Chicago, IL  60606, acts as the Sub-Adviser of the Bond Fund. 
     Lincoln Capital manages the day-to-day investment operations for the Fund. 
     The Bond Fund pays no fees directly to Lincoln Capital.  Lincoln Capital
     receives fees from the Adviser at the annual rate of 0.30% of the average
     daily net assets up to $50 million; 0.20% for the next $50 million; 0.15%
     for the next $150 million and 0.10% for amounts greater than $250 million.

     The Managing Directors and controlling shareholders of Lincoln Capital and
     their titles, are as follows:

   
          Timothy H. Ubben, Chairman
          J. Parker Hall, III, Chief Executive Officer
          Kenneth R. Meyer, President        
          David M. Fowler, Executive Vice President
          Jay H. Freedman, Executive Vice President
          Richard W. Knee, Executive Vice President
          Ray B. Zemon, Executive Vice President
    

Portfolio Management
     Stock Funds.

     Growth Fund.  The Growth Fund's investment selections are made by John W.
     Rogers, Jr., Chairman, President, and Treasurer of Ariel Capital
     Management, Inc.  Mr. Rogers founded Ariel Capital in 1983 as an
     institutional money management firm specializing in equities.  Prior to
     1983, he worked as a stock broker for the investment banking firm of
     William Blair & Co.  Among his civic affiliations, Mr. Rogers currently
     serves as President of the Board of the Chicago Park District and Director
     of the Chicago Urban League.  He also serves as a Director on the Boards of
     American National Bank & Trust Company, Burrell Communications Group, and
     Aon Corporation.  He is a 1980 graduate of Princeton University, where he
     received a B.A. in Economics.

     Appreciation Fund.  The Appreciation Fund's investment selections are made
     by Eric T. McKissack who has been the Fund's portfolio manager since its
     inception.  Mr. McKissack is the Vice Chairman and Co-Chief Investment
     Officer for the Adviser as well as a trustee and President of the Ariel
     Investment Trust.  Formerly, Mr. McKissack served as the Adviser's Director
     of Research.  Prior to joining the Adviser, he worked for five years as a
     research analyst for The First National Bank of Chicago.  Mr. McKissack
     holds a B.S. in both Management and Architecture from the Massachusetts
     Institute of Technology and an M.B.A. from the University of California at
     Berkeley.  He is a Chartered Financial Analyst and a board member of the
     Investment Analysts Society of Chicago.  He also serves as a board member
     of Travelers & Immigrant Aid, Urban Gateways and the Financial Advisory
     Committee of the Magic Johnson Foundation. 
   
     Bond Fund.  The Bond Fund's duration decisions are made by a strategy
     committee comprised of five senior officers of Lincoln Capital:  Timothy
     Doubek,Richard W. Knee, Peter Knez, 


                                          19
<PAGE>

     Kenneth R. Meyer, and Ray B. Zemon.  The five members of the strategy
     committee average 17 years of investment experience.  Investment selections
     for the Bond Fund are made by members of the fixed-income group: Pamela
     Allen, Timothy Doubek, Terrence J. Glomski, Lorraine L. Holland, Andrew A.
     Johnson, Kostas Iordanidis, Richard W. Knee, Peter Knez, Kenneth R. Meyer
     and Ray B. Zemon.  The members of the fixed-income group average 13.5 years
     of investment experience.  As of December 31, 1997, Lincoln Capital, as a
     whole, had $47.9 billion of assets under management of which $25 billion is
     managed in fixed-income strategies.  
     
Performance History of Lincoln Capital
     Set forth below are certain performance data, provided by Lincoln Capital,
     relating to annual average investment results of a composite of client
     advisory accounts ("Advisory Accounts") whose portfolios were managed by
     Lincoln Capital over a period of sixteen years, since Lincoln Capital began
     operations.  The Advisory Accounts had the same investment objective as the
     Bond Fund and were managed using substantially similar, though not
     necessarily identical, investment strategies and techniques as those used
     by the Fund.  Because of the similarities in investment strategies and
     techniques, Lincoln Capital believes that the Advisory Accounts are
     sufficiently comparable to the Bond Fund to make the performance data
     listed below relevant to its investors.  Also set forth below, for
     comparison, are the performances of widely recognized indices of market
     activity based upon the aggregate performance of selected unmanaged
     portfolios of publicly traded fixed-income securities.  

    
     The results presented are not intended to predict or suggest returns that
     will be experienced by the Bond Fund or the return that an investor will
     achieve by investing in the Bond Fund.  The Bond Fund is subject to
     different costs, including investment management, administration and
     registration fees that were not incurred by the Advisory Accounts. 
     Different methods of determining the performance from those described in
     the footnote to the chart below may result in different performance
     figures.  Investors should not rely on the following data as an indication
     of future performance of Lincoln Capital or of the Bond Fund.

                                 ANNUAL TOTAL RETURN
   
<TABLE>
<CAPTION>
                                                                                         
                                           Lincoln Capital's                             Salomon Brothers
          Number of    Average Account      Active Fixed           Lehman Brothers       Broad Investment-
Year     of Accounts   Size ($ millions)     Composite(1)          Aggregate Index(2)    Grade Bond Index(2)
- ----     ----------    -----------------   -----------------       -----------------     -------------------
<S>      <C>           <C>                 <C>                     <C>                   <C>             

1982         11               $48                 37.19%                   32.62%                31.79%
                                                                                                 
1983         15                50                  7.59                     8.36                  8.21
                                                                                                 
1984         18                62                 14.33                    15.15                 14.99
                                                                                                 
1985         14                96                 24.83                    22.10                 22.26
                                                                                                 
1986         17                98                 17.41                    15.26                 15.43
                                                                                                 
1987         17               105                  3.37                     2.76                  2.60
                                                                                                 
1988         19               109                  7.64                     7.89                  7.99
                                                                                                 
1989         23                90                 14.79                    14.53                 14.43
                                                                                                 
1990         25               118                  8.47                     8.96                  9.09
                                                                                                 
1991         25               150                 15.91                    16.00                 15.98
                                                                                                 
1992         29               148                  7.84                     7.40                  7.58
                                                                                                 
1993         29               150                 11.09                     9.75                  9.92
                                                                                                 
1994         27               140                 -2.09                    -2.92                 -2.85
                                                                                                 
1995         31               221                 16.98                    18.47                 18.53
                                                                                                 
1996         29               241                  3.39                     3.63                  3.62
                                                                                                 
1997         22               291                  8.97                     9.65                  9.64

</TABLE>

                                Annualized Performance
                        for the period ended December 31, 1997

                                           Lincoln Capital     Lehman Aggregate
               

                                          20
<PAGE>

    5 Year Annualized              7.47%     7.48% 
   10 Year Annualized              9.16      9.18% 
   Since Inception Annualized     12.01     11.56%
    

(1)  These figures are dollar-weighted, average annual investment results
     expressed as a percentage return.  Returns shown for Lincoln Capital are
     after deduction of investment advisory fees.  The accounts represented in
     the composite are all accounts managed in a manner that is substantially
     similar to the investment management of the Bond Fund and are most of
     Lincoln Capital's active accounts.

(2)  The Lehman Brothers Aggregate Index and the Salomon Brothers Broad
     Investment-Grade Bond Index are unmanaged indices of fixed-income
     securities which are composed of securities that are substantially similar
     to the types of securities in which the Advisory Accounts and the Bond Fund
     invest.

Ariel Distributors, Inc. is the Principal Underwriter to the Funds
     Ariel Distributors, Inc. serves as the Funds' principal underwriter.  Under
     the terms of its Underwriting Agreement, Ariel Distributors markets and
     distributes the shares of the Trust and is responsible for payment of
     commissions and service fees to broker-dealers, banks, and financial
     services firms, preparation of advertising and sales literature, and
     printing and mailing of prospectuses to prospective investors.  Pursuant to
     the Underwriting Agreement, Ariel Distributors receives a fee at the annual
     rate of 0.25% of the average daily net assets of the Stock Funds and the
     Bond Fund's Investor Class.  Ariel Distributors is a wholly-owned
     subsidiary of the Adviser.

The Transfer Agent and Custodian
     Investors Fiduciary Trust Company ("IFTC"), 127 West 10th Street, Kansas
     City, Missouri 64105, is the Funds' transfer agent, custodian, dividend
     disbursing and shareholder servicing agent. 

     Distribution Plan

     The Stock Funds and the Investor Class of the Bond Fund bear some of the
     cost of selling, marketing and distributing their shares under Distribution
     Plans adopted pursuant to Rule 12b-1 under the 1940 Act (the "Plan").  The
     Plans authorize payments by the Stock Funds and the Investor Class of the
     Bond Fund to the Distributor of up to 0.30% annually of the average daily
     net asset value of each Stock Fund or the Investor Class of the Bond Fund,
     respectively, but payments under the Plans are currently limited by the
     Board of Trustees to 0.25% annually of such average daily net asset value. 
     For the Bond Fund, payments pursuant to its Plan are included in the
     operating expenses of the Investor Class.

     Each Plan may be terminated at any time by vote of the Trustees who are not
     interested persons of the Adviser or the Funds and have no direct or
     indirect financial interest in the Plans or by a vote of a majority of the
     outstanding voting shares of the respective Funds.  

     A dealer having a sales agreement with respect to the Funds may receive up
     to 0.25% of the annual average daily net assets of accounts of the Stock
     Funds or of the Bond Fund Investor Class shares held in its customers'
     accounts as ongoing service and account maintenance fees.  The Distributor
     or the Adviser also may make expense reimbursements for special training
     and education of a dealer's registered representatives.  

   
     Price of Shares

     Shares are sold and redeemed at the net asset value next computed after
     acceptance of your order by the Fund or a Qualified Dealer.
    

                                          21
<PAGE>

     How to Buy Shares 

Initial Purchases
 
     The minimum initial investment for each of the Funds is $1,000, or $250 
     for retirement accounts, unless you participate in an automatic 
     investment plan, in which case there is a $50 minimum per investment. 

     A completed and signed application is required for each new account you 
     open, regardless of the method you choose for making your initial 
     investment. An account application accompanies this prospectus.  
     Additional forms may be required from corporations, associations and 
     certain financial institutions.  If you have any questions or need 
     additional applications, call 1-800-29-ARIEL (1-800-292-7435). 

By Mail 

     To purchase shares by mail, please make your check payable to Ariel 
     Mutual Funds and mail it with an application, indicating which of the 
     Ariel Mutual Funds you would like to buy, to: 

                    Ariel Mutual Funds
                    P.O. Box 419121
                    Kansas City, Missouri 64141-6121 

     All purchases made by check should be in U.S. dollars and made payable 
     to the Ariel Mutual Funds.  Third party checks, except those payable to 
     an existing shareholder who is a natural person (as opposed to a 
     corporation or partnership), credit cards, and cash will not be 
     accepted.  When purchases are made by check or periodic automatic 
     investment, redemptions will not be allowed until the investment being 
     redeemed has been in the account for 15 calendar days.

By Wire 

     You may also purchase shares by bank wire.  Just call us at 
     1-800-29-ARIEL (1-800-292-7435) and we will ask you your name, address, 
     social security or tax identification number, the amount of your 
     investment, the name of the Ariel Mutual Fund in which you wish to 
     invest as well as the name and address of the financial institution that 
     will be wiring your investment to the Fund.  We will immediately give 
     you an account number and you may then have your financial institution 
     wire federal funds to the Custodian with the following instructions: 
     
                    Ariel Mutual Funds
                    c/o Investors Fiduciary Trust Company 
                    127 West 10th Street 
                    Kansas City, MO 64105 
                    ABA #101003621 
                    Account No. 7528205 

                    The name of the Ariel Mutual Fund(s) and the class in 
                    which you wish to invest 
                    Your shareholder account number 
                    The name in which your account is registered 

     We accept wires at no charge.  However, your bank may charge you for 
     this service. 

   
By Qualified Dealer

     Shares of the Funds may be purchased directly from the Ariel Mutual 
     Funds or through certain financial institutions, brokers or dealers 
     which have a sales agreement with Ariel Distributors, Inc. ("Qualified 
     Dealer").  Shares purchased through a Qualified Dealer may be subject to 
     administrative charges or transaction fees.
    

                                      22

<PAGE>

Subsequent Purchases 

     You may make subsequent investments in the minimum amount of $50.  To 
     invest directly by bank wire, follow the instructions as shown above for 
     initial investments, except that there is no need to call us first.  
     Just contact your financial institution. 

     To add to your account by mail, please send your check or money order 
     payable to Ariel Mutual Funds with the detachable stub from the bottom 
     of your most recent account statement, or drop us a note that includes 
     the registered account name, account number, the name of the Fund and 
     amount you wish to invest.  Please remember that subsequent purchases 
     should be sent to: 
     
                    Ariel Mutual Funds 
                    P.O. Box 419121
                    Kansas City, Missouri 64141-6124


Automatic Investing through Your Bank 

     You may arrange for automatic investing whereby the Custodian will be 
     authorized to initiate a debit to your bank account of a specific amount 
     (minimum $50) to be used to purchase shares of the Funds on a monthly or 
     quarterly basis.  After each automatic investment you will receive a 
     transaction confirmation and the debit should be reflected on your next 
     bank statement.  You may terminate the plan at any time and we may 
     modify or terminate the plan at any time.  If, however, you terminate an 
     automatic investment plan with an account balance of less than $1,000, 
     we reserve the right to close your account.  See "Redeeming Shares 
     -Other Information About Redemptions."  If you desire to utilize this 
     automatic investment option, please indicate your intention to do so on 
     the application included with this prospectus. 

   
     Please note that each time an automatic investment is rejected, you will 
     be charged a $10 fee plus any costs incurred by the Funds.  After two 
     successive attempts to purchase funds through the automatic investment 
     program have been rejected, your account will be removed from this 
     program.  
    

     Tax-Saving Retirement Plans

Purchasing Through Retirement Plans
     
     Contact the Adviser for complete information kits discussing the plans 
     and their benefits, provisions and fees.

   
     You may establish your new account under one of several tax-deferred 
     plans.  These plans let you invest for retirement and shelter your 
     investment income from current taxes.  Before opening a retirement 
     account, consult your tax advisory to determine which options are best 
     suited to your needs.
    

   
     - Individual Retirement Accounts (IRAs): available to anyone who has 
     earned income.  Earnings grow on a tax-deferred basis and contributions 
     may be fully or partially deductible for certain individuals.  You may 
     also be able to make investments in the name of your spouse, if your 
     spouse has no earned income. 
    

   
     - Roth IRAs: available to anyone who has earned income below a certain 
     limit.  Earnings grow tax-deferred and can be withdrawn tax-free at 
     retirement if underlying contributions are held for at least five years.
    

   
     - Education IRAs: available to families with children under 18 to help 
     pay for qualified higher education expenses. Certain income limits apply.
    

                                      23

<PAGE>

     -Savings Incentive Match Plan for Employees (SIMPLE): available as an 
     IRA for each employee.  May be adopted by employers having no other plan 
     and employing 100 or fewer employees earning at least $5,000 in 
     compensation during the previous year.

     - Qualified Profit-Sharing and Money-Purchase Plans: available to 
     self-employed people and their partners, or to corporations and their 
     employees. 

     - Simplified Employee Pension Plan (SEP-IRA): available to self-employed 
     people and their partners, or to corporations. 

     - 403(b)(7) Custodial Accounts: available to employees of most 
     non-profit organizations and public schools and universities.

     Net Asset Value 

     Net asset value per share ("NAV") refers to the worth of one share.  NAV 
     is computed by adding the value of all portfolio holdings, plus other 
     assets, deducting liabilities and then dividing the result by the number 
     of shares outstanding.  A Fund's NAV will vary daily based on the market 
     values of its investments. 

   
     Stocks and other assets are valued based on market quotations.  
     Fixed-income securities, including those to be purchased under firm 
     commitment agreements (other than obligations having a maturity of 60 
     days or less), are normally valued on the basis of quotes obtained from 
     brokers and dealers or pricing services.  Short-term investments having 
     a maturity of 60 days or less are valued at amortized cost, unless the 
     Board of Trustees determines that such method is not appropriate under 
     specific circumstances. Assets for which there are no quotations 
     available will be valued at fair value as determined by the Board of 
     Trustees. 
    

   
     The NAV is calculated at the close of the regular session of the New 
     York Stock Exchange (normally 3:00 p.m. Central time).  All of the Funds 
     are closed for business any day the New York Stock Exchange is closed 
     and the Bond Fund is also closed on the following holidays:  Columbus 
     Day and Veterans Day.  All purchases of Fund shares will be confirmed 
     and credited to your account in full and fractional shares. 
    

     When Your Account Will Be Credited 

Before you buy shares, please read the following information to
make sure your investment is accepted and credited properly. 

   
     Your purchase will be processed at the next offering price based on the 
     net asset value next calculated after your order is received and 
     accepted.  Such calculation is made at the close of regular session 
     trading on the New York Stock Exchange, which is usually 3:00 p.m. 
     Central time.  All your purchases must be made in U.S. dollars and 
     checks must be drawn on U.S. banks.  No cash will be accepted.  The 
     Funds reserve the right to suspend the offering of shares for a period 
     of time or to reject any specific purchase order.  If your check does 
     not clear, or your automatic investment is rejected, your purchase will 
     be canceled and you will be charged a $10 fee plus costs incurred by the 
     Funds.  When you purchase by check, the Funds can hold payment on 
     redemptions until they are reasonably satisfied that the investment is 
     collected (normally up to 15 calendar days from the purchase date).  To 
     avoid this collection period, you can wire federal funds from your bank, 
     which may charge you a fee. 
    

     Certain financial institutions or broker-dealers which have entered into 
     a sales agreement with the Distributor may enter confirmed purchase 
     orders on behalf of customers by phone, with payment to follow within a 
     number of days of the order as specified by the program.  If payment is 
     not received in the time 

                                      24

<PAGE>

     specified, the financial institution could be liable for resulting fees 
     or losses.  State securities laws may require such firms to be licensed 
     as securities dealers in order to sell shares of the Funds. 

Other Information about Purchasing Shares 

   
     Although there is no sales charge imposed by the Funds when you purchase 
     shares directly, certain Qualified Dealers may impose charges for their 
     services, and such charges may constitute a significant portion of a 
     smaller account. 
    

     The Funds do not issue share certificates unless you specifically 
     request one each time you make a purchase. Certificates are not issued 
     for fractional shares or to shareholders who have elected a systematic 
     withdrawal plan. Also, shares represented by certificates may not be 
     redeemed by telephone.  See "Redeeming Shares" for information on how to 
     redeem your shares. 

   
     How to Exchange Shares 
    

You may exchange shares of the Funds for shares of the other Ariel Mutual 
Funds and for shares of certain money market funds. 

   
     You may exchange your shares in each Fund for shares of the Bond Fund's 
     Institutional Class or for shares in each of the other Ariel Mutual 
     Funds at no additional charge as long as your total investment in each 
     class or Fund meets the minimum investment required for that class or 
     Fund. 
    

   
     You may also exchange your shares in any Ariel Mutual Fund for shares of 
     Cash Resource Trust Money Market Fund, Cash Resource Trust U.S. 
     Government Money Market Fund or Cash Resource Trust Tax-Exempt Money 
     Market Fund (collectively, the "Cash Resource Trust Funds") at no 
     additional charge as long as your total investment meets any required 
     minimum. This exchange privilege is a convenient way to buy shares in a 
     money market fund in order to respond to changes in your goals or in 
     market conditions.  These money market funds are no-load funds managed 
     by Commonwealth Advisors, Inc.
    

   
     Before exchanging your shares into shares of the Bond Fund's 
     Institutional Class or shares of any Cash Resource Trust Fund, read the 
     applicable prospectus.  To obtain a prospectus for any of these funds, 
     call 1-800-29-ARIEL (1-800-292-7435). 
    

By Mail 

   
     To exchange your shares of a Fund into shares of one of the other Ariel 
     Mutual Funds or Cash Resource Trust Funds, just send a written 
     request to: 
    

                    Ariel Mutual Funds
                    P.O. Box 419121
                    Kansas City, Missouri 64141-6121 

   
     This request should include your name, account number, the name of the 
     Fund you currently own, the name of the Ariel Mutual Fund or Cash 
     Resource Trust Fund you wish to exchange into and the dollar amount or 
     number of shares you wish to exchange.  Please remember that you cannot 
     place any conditions on your request. 
    

By Telephone 

     Unless you have elected not to have telephone transaction privileges by 
     checking the appropriate box in your application, you may also make 
     exchanges by calling 1-800-29-ARIEL (1-800-292-7435).  Exchanges made 
     over the phone may be made by any person, not just the shareholder of 
     record.  You may only exchange shares by telephone if the shares you are 
     exchanging are not in certificate form. Certain 

                                      25

<PAGE>

     other limitations and conditions apply to all telephone transactions.  
     Before using your telephone privilege, please read "Telephone 
     Transactions." 

     Other Information about Exchanging Shares

     All accounts opened as a result of using the exchange privilege must be 
     registered in the same name and taxpayer identification number as your 
     existing account with the Ariel Mutual Funds. 

     Because of the time needed to transfer money between funds, you may not 
     exchange into and out of the same fund on the same or successive days; 
     there must be at least one day between exchanges.  You may exchange your 
     shares of the Funds only for shares that have been registered for sale 
     in your state.  See also "Dividends, Capital Gains and Taxes." 

     Remember that each exchange represents the sale of shares of one Fund 
     and the purchase of shares of another.  Therefore, you could realize a 
     taxable gain or loss on the transaction. 

     The Funds reserve the right to terminate or modify the exchange 
     privilege with at least 60 days' written notice. If your account is 
     subject to backup withholding, you may not use the exchange privilege. 

     Because excessive trading can hurt the Funds' performance and 
     shareholders, the Funds also reserve the right to temporarily or 
     permanently terminate, with or without advance notice, the exchange 
     privilege of any investor who makes excessive use of the exchange 
     privilege (e.g. more than five exchanges per calendar year).  Your 
     exchanges may be restricted or refused if a Fund receives or anticipates 
     simultaneous orders affecting significant portions of the Fund's assets. 
      In particular, a pattern of exchanges with a "market timer" strategy 
     may be disruptive to the Funds. 

     If you have any share certificates, you must include them with your 
     exchange request.  A signature guarantee is not required except in cases 
     where shares are also redeemed at the same time for cash in an amount 
     exceeding $25,000.  For certificate delivery instructions see "Redeeming 
     Shares--By Mail" and for signature guarantee instructions see "Signature 
     Guarantees."  

                                      26

<PAGE>

     Telephone Transactions 

   
     If you have telephone transaction privileges, you may purchase, redeem, 
     or exchange shares or wire funds by telephone as described in this 
     prospectus.  You automatically have telephone privileges unless you 
     elect otherwise.  These privileges, however, may not be available 
     through certain Qualified Dealers or other financial institutions.  By 
     exercising the telephone privilege to sell or exchange shares, you agree 
     that the Funds shall not be liable for following telephone instructions 
     reasonably believed to be genuine.  Reasonable procedures will be 
     employed to confirm that such instructions are genuine and, if not 
     employed, the Funds may be liable for unauthorized instructions.  Such 
     procedures will include a request for a personal identification number 
     and tape recording of the instructions.  You should verify the accuracy 
     of telephone transactions immediately upon receipt of your confirmation 
     statement.  Due to the need for signature guarantees, telephone 
     redemptions in excess of $25,000 will not be accepted. 
    

     During unusual market conditions, we may have difficulty in accepting 
     telephone requests, in which case you should mail your request. 

     The Funds reserve the right to terminate, suspend or modify telephone 
     transaction privileges. 

     Signature Guarantees 

We may require signature guarantees. 

     For our mutual protection, we may require a signature guarantee on 
     certain transaction requests.  A signature guarantee verifies the 
     authenticity of your signature, and may be obtained from any bank, trust 
     company, savings and loan association, credit union, broker-dealer firm 
     or member of a domestic stock exchange.  A signature guarantee cannot be 
     provided by a notary public.  If redemption proceeds are $25,000 or less 
     and are to be paid or credited to an individual shareholder of record at 
     the address of record, a signature guarantee is not required (unless 
     there has been an address change within 60 days). All other redemption 
     requests must have signatures guaranteed. 

Special Services and Charges

     The Funds pay for shareholder services but not for special services that 
     are required by a few shareholders, such as a request for a historical 
     transcript of an account.  You may be required to pay a research fee for 
     these special services. 

   
     If you are purchasing shares of a Fund through a program of services 
     offered by a Qualified Dealers or other financial institution, you 
     should read the program materials in conjunction with this prospectus.  
     Certain features may be modified in these programs, and administrative 
     charges may be imposed by these institutions for the services rendered. 
    

   
How to Redeem Shares 
    

By Mail 

   
     You may redeem shares from your account by sending a letter of 
     instruction, your name, the name of the Fund and account number from 
     which shares are to be redeemed, the number of shares or dollar amount 
     and where you want your check to be sent.  Simply send your written 
     request to redeem your shares to the Transfer Agent as follows: 
    

                                      27

<PAGE>

                    Ariel Mutual Funds 
                    P.O. Box 419121 
                    Kansas City, Missouri 64141-6121 

     Certain shareholders, such as corporations, trusts and estates, may be 
     required to submit additional documents. The letter of instruction must 
     be signed by all required authorized signers.  If you want your money to 
     be wired to a bank not previously authorized or if you would like funds 
     sent to a different address or another person, your letter must be 
     signature guaranteed.  Please remember that you cannot place any 
     conditions on your request.  If any share certificates were issued, they 
     must be returned duly endorsed or accompanied by a separate stock 
     assignment. See "Signature Guarantees."  See "Telephone Transactions" 
     for more information.
     
By Telephone 

   
     Unless you have elected not to have telephone transaction privileges by 
     checking the box on your application, you may also redeem shares by 
     calling 1-800-29-ARIEL (1-800-292-7435) and receive a check by mail. 
     Remember, however, that the check can only be issued for up to $25,000, 
     and only to the registered owner (who must be an individual), and may 
     only be sent to the address of record, which must have been on file for 
     at least 60 days.  Shares represented by certificates may not be 
     redeemed by telephone.  See "Telephone Transactions" for more 
     information.
    

By Wire 

     Payment for your shares may also be made to you by wire if you have 
     selected this option in your application and have named a commercial 
     bank or savings institution with a routing number to which we can send 
     your money. 

     Once you have applied for wire redemption privileges, you or any other 
     person can make such a request by calling 1-800-29-ARIEL 
     (1-800-292-7435).  You may also use your wire privilege by mailing a 
     signed request that includes the name of the Fund, account number and 
     amount you wish to have wired, by writing to: 

                    Ariel Mutual Funds 
                    P.O. Box 419121 
                    Kansas City, Missouri 64141-6121 

   
     The proceeds will be sent only to the financial institution you have 
     designated on your application.  You may terminate the wire redemption 
     privilege by notifying us in writing.  A charge of $10 is normally 
     imposed on wire redemptions.  See the restrictions under "Telephone 
     Transactions" as they also apply to wire redemptions. 
    

Systematic Check Redemptions 

     If you maintain an account with a balance of $10,000 or more, you may 
     have regular monthly or quarterly redemption checks for a fixed amount 
     sent to you simply by sending a letter with all the information, 
     including the Fund name, your account number, the dollar amount ($100 
     minimum) and when you want the checks mailed to your address on the 
     account.  If you would like checks regularly mailed to another person or 
     place, the signature on your letter must be guaranteed.  See "Signature 
     Guarantees."  

     Other Information about Redemptions

To ensure acceptance of your redemption request, please follow the procedures 
described here and below. 

   
     Other than the $10 fee normally imposed on wire redemptions, there is no 
     charge for redeeming your shares.  If, however, you redeem shares 
     through 
    
<PAGE>
   
     Qualified Dealers or other financial institutions, you may be charged a 
     fee when you redeem your shares. 
    

     Once your shares are redeemed, the proceeds will normally be sent to you 
     on the next business day.  However, if making immediate payment could 
     adversely affect the Fund, it may take up to seven calendar days.  When 
     the New York Stock Exchange is closed (or when trading is restricted) 
     for any reason other than its customary weekend or holiday closing, or 
     under any emergency circumstances as determined by the Securities and 
     Exchange Commission, redemptions may be suspended or payment dates 
     postponed. 

   
     You may redeem all or a portion of your shares on any business day 
     during which the New York Stock Exchange is open for business except, 
     with respect to the Bond Fund only, the following holidays:  Columbus 
     Day and Veterans' Day.  Your shares will be redeemed at the net asset 
     value next calculated after your redemption request is received by the 
     Transfer Agent in proper form.  Redemptions made after the New York 
     Stock Exchange has closed will be made at the next day's net asset 
     value.  Remember that if you redeem shortly after purchasing shares, the 
     Funds may hold payment on the redemption of your shares until they are 
     reasonably satisfied that payments made by check have been collected 
     (normally up to 15 calendar days after investment). 
    

Minimum account balance is $1,000. 

     Please maintain a balance in your account of at least $1,000. If, due to 
     shareholder redemptions, the value of your account in a Fund falls below 
     $1,000, or you fail to invest at least $1,000, the account may be closed 
     and the proceeds mailed to you at your address of record.  You will be 
     given 30 days' notice that your account will be closed unless you make 
     an additional investment to increase your account balance to the $1,000 
     minimum. 

     Redemptions in Kind for the Bond Fund

     If conditions arise that would make it undesirable for the Bond Fund to 
     pay for all redemptions in cash, the Bond Fund may authorize payment to 
     be made in marketable portfolio securities.  However, the Bond Fund has 
     obligated itself under the Investment Company Act of 1940 to redeem for 
     cash all shares of the Bond Fund presented for redemption by any one 
     shareholder in any 90-day period up to the lesser of $250,000 or 1% of 
     the Bond Fund's net assets.  Securities delivered in payment of 
     redemptions would be valued at the same value assigned to them in 
     computing the Bond Fund's net asset value per share.  Shareholders 
     receiving such securities may incur brokerage costs or be subject to 
     dealer markdowns when these securities are sold.

     Dividends, Capital Gains and Taxes 
     
Each year, the Funds distribute substantially all of their net investment 
income and capital gains to shareholders. 

     The tax discussion in this section is not intended as a complete or 
     definitive discussion of the tax effects of investing in the Funds.  
     Each investor should consult his or her own tax adviser regarding the 
     effect of federal, state and local taxes related to ownership, exchange 
     or sale of Fund shares.

     The Funds intend to qualify as regulated investment companies under 
     Subchapter M of the Internal Revenue Code, as amended (the "Code").  As 
     such, the Funds generally will not pay Federal income tax on the income 
     and gains they pay as dividends to their shareholders.  In order to 
     avoid a 4% Federal excise tax, the Funds intend to distribute each year 
     substantially all of its net income and gains.

   
     Dividends from net investment income are declared daily and paid monthly 
     for the Bond Fund, and declared and paid annually for the Stock Funds.  
     Net investment income consists of the interest income, net short-term 
     capital gains, if any, and dividends declared and received on 
     investments, less 
    
                                      29

<PAGE>
   
     expenses.  Distributions of net short-term capital gains (treated as 
     dividends for tax purposes) and net long-term capital gains, if any, are 
     normally declared and paid once a year.
    

Dividend and Distribution Payment Options 

     Dividends and any distributions from the Funds are automatically 
     reinvested in the Funds at net asset value, unless you elect to have the 
     dividends of $10 or more paid in cash.  You must notify the Funds in 
     writing prior to the record date to change your payment options.  If you 
     elect to have dividends and/or distributions paid in cash, and the U.S. 
     Postal Service cannot deliver the check, or if it remains uncashed for 
     six months, it, as well as future dividends and distributions, will be 
     reinvested in additional shares. 

Taxes on distributions

     Distributions are subject to federal income tax, and may also be subject 
     to state or local taxes.  Distributions are taxable when they are paid, 
     whether they are received in cash, or reinvested.  However, 
     distributions declared in December and paid in January are taxable as if 
     they were paid on December 31.  For federal tax purposes, the Funds' 
     income and short-term capital gain distributions are taxed as dividends; 
     long-term capital gain distributions are taxed as long-term capital 
     gains.  Some dividends may be exempt from state or local income tax as 
     income derived from U.S. Government Securities.  You should consult your 
     tax adviser on the taxability of your distributions.  

"Buying a Dividend" 

     At the time of purchase, the share price of a Fund may reflect 
     undistributed income or capital gains. Any income or capital gains from 
     these amounts which are later distributed to you are fully taxable.  On 
     the record date of a distribution, the Fund's share value is reduced by 
     the amount of the distribution.  If you buy shares just before the 
     record date ("buying a dividend") you will pay the full price for the 
     shares and then receive a portion of this price back as a taxable 
     distribution. 

You may realize a capital gain or loss when you sell or exchange shares. 

   
     If you sell your shares or exchange them for shares of another fund, you 
     will have a short or long-term capital gain or loss, depending on how 
     long you owned the shares which were sold or exchanged.  However, the 
     Trust believes that an exchange between classes of the same fund are 
     non-taxable.  In January, you will be sent a form indicating the 
     proceeds from all sales, including exchanges.  You should keep your 
     annual year-end account statements to determine the cost (basis) of the 
     shares to report on your tax returns.
    

     If the Funds do not have your correct Social Security or Corporate Tax 
     Identification Number ("TIN") and a signed certified application or Form 
     W-9, Federal law requires the Funds to withhold 31% of your dividends 
     and certain redemptions.  You will be prohibited from opening another 
     account by exchange and you may be subject to a fine.  If this TIN 
     information is not received within 60 days after your account is 
     established, your account may be redeemed at the current NAV on the date 
     of redemption.  The Funds reserve the right to reject any new account or 
     any purchase order for failure to supply a certified TIN. 

                                      30

<PAGE>

INVESTMENT ADVISER AND 
SERVICES ADMINISTRATOR
Ariel Capital Management, Inc. 
307 North Michigan Avenue, Suite 500
Chicago, Illinois 60601 
1-800-29-ARIEL (1-800-292-7435) fax (312) 726-7473 

BOND FUND SUB-ADVISER
Lincoln Capital Management Company
200 South Wacker Drive, Suite 2100
Chicago, IL  60606

PRINCIPAL UNDERWRITER
Ariel Distributors, Inc.
307 North Michigan Avenue, Suite 500
Chicago, Illinois  60601

INDEPENDENT AUDITORS 
Ernst & Young LLP
233 South Wacker Drive 
Chicago, Illinois 60606 

TRANSFER AGENT AND CUSTODIAN 
Investors Fiduciary Trust Company 
127 West 10th Street
Kansas City, Missouri 64105 

LEGAL COUNSEL 
D'Ancona & Pflaum 
30 North LaSalle Street, Suite 2900 
Chicago, Illinois 60602 

BOARD OF TRUSTEES 

Bert N. Mitchell, CPA (Chairman of the Board of Trustees)
Chairman and Chief Executive Officer, Mitchell & Titus, LLP

Mario L. Baeza, ESQ.
Chairman and Chief Executive Officer
Latin America Equity Partners, L.P.

   
James W. Compton
President and Chief Executive Officer, Chicago Urban League

William C. Dietrich, CPA
Chief Financial Officer, Streamline Mid-Atlantic, Inc.
    

Royce N. Flippin, Jr.
President, Flippin Associates; formerly Director of Program
Advancement, 
Massachusetts Institute of Technology 

John G. Guffey, Jr. 
Chair, Calvert Social Investment Foundation 
Treasurer and Director, Silby, Guffey and Co., Inc. 

Mellody L. Hobson
Senior Vice President, Director of Marketing, 
Ariel Capital Management, Inc. 

Christopher G. Kennedy
Executive Vice President and Director,
Merchandise Mart Properties, Inc.

Eric T. McKissack, CFA
Vice Chairman and Co-Chief Investment Officer,
Ariel Capital Management, Inc.

                                      31
<PAGE>


          Prospectus                                                          
          For Institutional Class Shares

   

                                                  February 1,  1998
    

          Ariel Mutual Funds 
                      Ariel Premier Bond Fund
          307 North Michigan Avenue, Suite 500, Chicago, Illinois 60601 


          The Ariel Premier Bond Fund (the "Fund") is a series of Ariel
          Growth Fund (doing business as Ariel Investment Trust) (the
          "Trust"). The Trust also offers two additional series, Ariel Growth
          Fund and Ariel Appreciation Fund which are offered under a separate
          prospectus.  Ariel Capital Management, Inc. (the "Adviser") is the
          Manager and Administrator of the Fund.  Lincoln Capital Management
          Company ("Lincoln Capital") is the Fund's Sub-Adviser responsible
          for the day to day investment operations.

   

          The Fund currently offers two classes of shares, the Institutional
          Class and the Investor Class.  The Institutional Class is offered
          primarily to institutional investors.  Institutional Class shares
          are sold and redeemed at net asset value without any sales charge
          and are not subject to Rule 12b-1 distribution fees.  The Investor
          Class is offered to retail investors under a separate prospectus.  
    

Investment Objective 

          The Fund seeks to maximize total return through a combination of
          income and capital appreciation.  The Fund generally invests in
          high quality, highly liquid fixed-income securities.  Normally, at
          least 80% of the Fund's total assets will be invested in
          fixed-income securities rated A or better by a nationally
          recognized securities rating organization (or deemed the equivalent
          by Lincoln Capital, if unrated).  The Fund seeks to achieve its
          investment objective by implementing decisions regarding the level
          and direction of interest rates (duration and yield curve
          decisions) and through the purchase and sale of securities to take
          advantage of perceived yield spread opportunities.

About this prospectus

          This prospectus sets forth important information concerning the
          Ariel Premier Bond Fund.  Please read it carefully before investing
          and keep it for future reference.  It is designed to provide you
          with information you should know before investing and to help you
          decide if the goals of the Fund match your own. 

   
          A Statement of Additional Information (dated February 1, 1998) for
          the Fund has been filed with the Securities and Exchange Commission
          and (together with any supplement thereto) is incorporated herein
          by reference.  This Statement is available, without charge, upon
          request by calling 1-800-29-ARIEL (1-800-292-7435).
    
          
          SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR
          GUARANTEED OR ENDORSED BY, ANY BANK, AND ARE NOT FEDERALLY 
          INSURED BY THE FDIC, THE FEDERAL RESERVE BOARD, OR ANY OTHER 
          AGENCY.

          THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
          SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
          COMMISSION, NOR HAS THE FEDERAL OR ANY STATE SECURITIES
          COMMISSION PASSED ON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. 
          ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. 

<PAGE>



Table of Contents                                          
                            Page 

Fund Expenses for Institutional Class Shares . . . . . . . . . . . . . . . . . 3

Financial Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Investment Objective, Policies and Risk Factors. . . . . . . . . . . . . . . . 4

Total Return, Yield and Other Performance Information  . . . . . . . . . . . .11

Management and Organization of the Fund  . . . . . . . . . . . . . . . . . . .12

How to Buy Shares  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Net Asset Value  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
   

When Your Account Will Be Credited . . . . . . . . . . . . . . . . . . . . .  18
    

Exchanging Shares  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

   

Redeeming Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20


Dividends, Capital Gains and Taxes . . . . . . . . . . . . . . . . . . . . .  22

Certain Shareholders of the Fund . . . . . . . . . . . . . . . . . . . . . .  23
    



                                          2
<PAGE>
Fund Expenses for Institutional Class Shares 

Shareholder transaction costs

          Maximum Sales Load on Purchases              None     
          Maximum Sales Load on Reinvested Dividends   None     
          Deferred Sales Load                          None     
          Redemption Fee                               None     
          Exchange Fee                                 None     

Annual Fund operating expenses for Institutional Class shares (as a percentage
of average net assets): 

                      
Management Fees                         0.45%     
12b-1 Fees                              0.00%     
Other Expenses (*)                      0.00%     
                                        ----
Total Fund Operating Expenses (*)       0.45%     

   

(*)  Pursuant to an Investment Advisory Agreement and an Administrative Services
Agreement, the Adviser pays all expenses of the Fund except fees under the
Agreements, interest, taxes, brokerage commissions and extraordinary expenses. 
Fees under the Advisory Agreement and Administrative Services Agreement are
0.35% and 0.10%, respectively.

    

Example:

We can illustrate these expenses with the example below. You would pay the
following expenses on a $1,000 investment (assuming a 5% annual return and
redemption at the end of each period):

                                             
One Year                                     $ 5 
Three Years                                  $14  
Five Years                                   $25  
Ten Years                                    $57  

Explanation of Table: The purpose of the table is to assist you in understanding
the various costs and expenses that an investor in the Institutional Class of
the Fund would bear directly (shareholder transaction costs) or indirectly
(annual fund operating expenses). 

The 5% rate used in the example is for illustration only and is not intended to
be indicative of the future performance of the Fund, which may be more or less
than the assumed rate.  Actual expenses may be more or less than those shown.

                                 Financial Highlights
   

The information set forth in the following table is for each share of the
Institutional Class of the Premier Bond Fund outstanding during the period shown
and is derived from the Fund's financial statements which are included in the
September 30,  1997 Annual Report to Shareholders.  The information in the table
is covered by the Report of Ernst & Young LLP, the Fund's Independent Auditors. 
The Annual Report is available upon request.  The financial statements appearing
in the Annual Report are incorporated by reference into the Fund's Statement of
Additional Information.  The table should be read in conjunction with the
financial statements and their related notes.

    

                                          3
<PAGE>

                              [ARIEL PREMIER BOND FUND]

                   Investment Objective, Policies and Risk Factors

The Fund seeks to maximize total return.

The Fund seeks to achieve its investment objective by implementing decisions
regarding the level and direction of interest rates (duration and yield curve
decisions) and through the purchase and sale of securities to take advantage of
perceived yield spread opportunities.

Investment Objective

          The investment objective of the Fund is to seek to maximize total
          return through a combination of income and capital appreciation. 
          The Fund generally invests in high quality, highly liquid
          fixed-income securities.  Normally, the Fund will invest at least
          80% of its total assets in fixed-income securities rated A or
          better by Moody's Investors Service, Inc. ("Moody's") or Standard
          and Poor's Corporation ("S & P") or that are not rated by Moody's
          or S & P but are deemed to be of comparable quality by Lincoln
          Capital ("A-Grade Securities").  In the event that downgrades of
          securities cause less than 80% of the Fund's total assets to be
          invested in A-Grade Securities, Lincoln Capital will take steps as
          soon as practicable to increase the Fund's holdings of A-Grade
          Securities.  The Fund seeks to achieve its investment objective by
          implementing decisions regarding the level and direction of
          interest rates (duration and yield curve decisions) and through the
          purchase and sale of securities to take advantage of perceived
          yield spread opportunities. 

          The Fund may purchase any type of income producing security
          including, but not limited to, U.S. government and agency
          obligations, mortgage-backed and other asset-backed securities,
          commercial paper and corporate debt securities. 

          The Fund will take reasonable risks in seeking to achieve its
          investment objective. There is, of course, no assurance that the
          Fund will be successful in meeting its objective since there is
          risk involved in the ownership of securities. 

Duration

          Duration is a measure of the expected life of a fixed-income
          security that was developed as a more precise alternative to the
          concept of term-to-maturity.  Duration incorporates a bond's yield,
          coupon interest payments, final maturity and call features into one
          measure.  Duration is also a way to measure the interest-rate
          sensitivity of the Fund's portfolio.   The duration of the Fund is
          calculated by averaging the durations of the bonds held by the Fund
          with each duration "weighted" according to the percentage of net
          assets that it represents.  In general, the higher the Fund's
          duration, the greater the appreciation or depreciation of the
          Fund's assets will be when interest rates change.  In its attempt
          to maximize total return, Lincoln Capital intends to vary the
          duration of the Fund, as described below, depending on its outlook
          for interest rates.  

Investment Process

The portfolio's average duration will be longer when Lincoln Capital believes
that interest rates will fall shorter when it believes interest rates will rise.

          Interest Rate Decisions


                                          4
<PAGE>


          Lincoln Capital seeks to achieve a duration equal to the duration
          of the domestic, investment grade bond market when its outlook for
          interest rates is neutral.  The portfolio's average duration will
          be longer when Lincoln Capital believes that interest rates will
          fall and shorter when it believes interest rates will rise.  The
          stronger Lincoln Capital's conviction, the further the Fund's
          duration will diverge from the duration of the domestic, investment
          grade bond market, which generally averages approximately five
          years.  The Fund's duration will normally range from four to six
          years.  It is expected that only on rare occasions will the Fund's
          duration reach the extreme positions (plus or minus 2 years from
          the duration of the domestic, investment grade bond market).
   

          The Fund's duration relative to that of the domestic, investment
          grade bond market is established in periodic strategy meetings of a
          committee consisting of senior officers of Lincoln Capital. 
          Changes in the Fund's duration are based on a disciplined 
          evaluation of three factors:

    

          (a)         Economic activity and capacity for growth;
          (b)         U.S. Government monetary policy; and
          (c)         Expectations for inflation.

          The committee evaluates the above factors and weights each one to
          determine a precise duration position relative to the duration of
          the domestic, investment grade bond market.  Over time, changes in
          the duration position take the form of a series of small movements;
          generally in one-half year increments. 

          Once the Fund's specific duration position has been established,
          remaining decisions (i.e. yield curve structure, sector emphasis
          and issue selections), are made and implemented by Lincoln
          Capital's Fixed Income Group working as a team.  These decisions
          are based on Lincoln Capital's belief that yield spreads reflect
          fundamental risk premiums.  These premiums reflect compensation for
          accepting credit risk or uncertain cash flow patterns (timing and
          amounts).  Lincoln Capital's judgments on these spreads are
          influenced by its outlook for business conditions and for the
          volatility of interest rates.  These judgments are supported by
          studies of historical spread relationships and break-even spread
          analysis.  Cash equivalents may be used to create the desired yield
          curve structure.  Portfolio positions are continually monitored and
          evaluated.

          Sector Emphasis and Security Selection

          Sector and security selection decisions are based on Lincoln
          Capital's judgment and are supported by studies of historical
          spread relationships, break-even yield spread analysis, and model
          driven portfolio return projections.  In order to monitor yield
          spreads, Lincoln Capital maintains extensive yield spread data
          banks and has direct computer access to extensive historical yield
          spread data and specific issuer data. 

   
          Credit research consists of internally generated fundamental
          analysis and input from rating agencies and other sources.  A
          committee  at Lincoln Capital reviews those corporate bonds that
          are considered for purchase.  By focusing on higher-rated
          securities and by comparing judgments among outside sources to
          internal credit judgments, Lincoln Capital believes that credit
          risk can be managed and reduced.  It is unlikely that Lincoln
          Capital will seek to enhance the Fund's return by anticipating an
          improvement in the creditworthiness of specific corporate issuers,
          particularly lower rated issuers. 
    

Research Process

                                          5
<PAGE>

          Virtually 100% of Lincoln Capital's fixed-income research is
          generated in-house.  Each member of the investment staff serves as
          a portfolio manager and a research analyst.  There is no lapse
          between the development of an investment idea and its execution. 
          Fundamental research includes economic analysis, sector and issuer
          spread relationships, and credit research.  In the area of
          quantitative research, Lincoln Capital owns proprietary models,
          developed in-house.  These include:  a mortgage prepayment model,
          mortgage valuation model, total return analytics for securities
          with complex cash flows, risk exposure models, and yield curve
          analytics.

Investments

          In General.  The Fund may invest in fixed-income securities which
          are obligations of, or guaranteed by the U.S. Government, its
          agencies or instrumentalities ("U.S. Government Securities"). U.S.
          Government Securities are unrated but are generally considered
          high-grade securities.  The Fund may also invest in other
          investment grade, fixed-income securities, including corporate
          bonds, mortgage-backed and other asset-backed securities and other
          high quality, liquid investments.

          The debt securities in which the Fund will invest are investment
          grade securities.

Generally at least 80% of the Fund's total assets will be invested in A-Grade
Securities, which are in the three highest grades, or the equivalent, while 20%
of the total assets are not so limited.

          The debt securities in which the Fund will invest are investment
          grade securities.  These are securities rated in the four highest
          grades assigned by Moody's Investors Service, Inc. ("Moody's")
          (Aaa, Aa, A and Baa) or Standard and Poor's Corporation ("S & P")
          (AAA, AA, A and BBB) or that are not rated by Moody's or S & P but
          deemed to be of comparable quality by Lincoln Capital.  Generally,
          at least 80% of the Fund's total assets will be invested in A-Grade
          Securities, which are in the three highest grades, or the
          equivalent, while 20% of the total assets are not so limited.  The
          lowest investment grade securities (Baa and BBB) have speculative
          characteristics because changes in economic conditions or other
          circumstances are more likely to lead to a weakened capacity to
          make principal and interest payments.  The Fund will not invest in
          securities below investment grade (so called "junk bonds").  In the
          event of a downgrade of a debt security held by the Fund to below
          investment grade, the Fund is not usually required to automatically
          sell the issue, but Lincoln Capital will consider whether to
          continue holding the security.  However, if such a downgrade would
          cause more than 5% of net assets to be invested in debt securities
          below investment grade, Lincoln Capital will take steps as soon as
          practicable to reduce the proportion of debt below investment grade
          to 5% of net assets or less.

          The value of the shares issued by the Fund is not guaranteed and
          will fluctuate with changes in the value of the Fund's portfolio. 
          Generally when prevailing interest rates rise, the value of the
          Fund's portfolio is likely to decline and when prevailing interest
          rates decline, the value of the Fund's portfolio is likely to rise.

          U.S. Government Securities  

          There are two basic types of U.S. Government Securities: (1) direct
          obligations of the U.S. Treasury, and (2) obligations issued or
          guaranteed by an agency or instrumentality of the U.S. Government. 
          Agencies and instrumentalities of the U.S. Government include
          Federal Farm Credit System ("FFCS"), Student Loan Marketing
          Association ("SLMA"), Federal Home Loan Mortgage Corporation
          ("FHLMC"), Federal Home Loan Banks ("FHLB"), Federal National
          Mortgage Association ("FNMA") and Government National Mortgage
          Association 

                                          6
<PAGE>

          ("GNMA").  Some obligations issued or guaranteed by agencies or
          instrumentalities, such as those issued by GNMA, are fully
          guaranteed by the U.S. Government.  Others, such as FNMA bonds,
          rely on the assets and credit of the instrumentality with limited
          rights to borrow from the U.S. Treasury.  Still other securities,
          such as obligations of the FHLB, are supported by more extensive
          rights to borrow from the U.S. Treasury.  

          The guarantees of the U.S. Government, its agencies and
          instrumentalities are guarantees of the timely payment of principal
          and interest on the obligations purchased and not of their market
          value. 

          Mortgage Related Securities

          Pass-Through Securities.  The Fund may invest in GNMA Certificates
          which are mortgage-backed securities representing part ownership of
          a pool of mortgage loans.  A "pool" or group of such mortgages is
          assembled and, after being approved by GNMA, is offered to
          investors through securities dealers.  Once approved by GNMA, the
          timely payment of interest and principal on each mortgage is
          guaranteed by GNMA and backed by the full faith and credit of the
          U.S. Government.  GNMA Certificates differ from bonds in that
          principal is paid back monthly by the borrower over the term of the
          loan rather than returned in a lump sum at maturity.  GNMA
          Certificates are called "pass-through" securities because both
          interest and principal payments (including prepayments) are passed
          through to the holder of the Certificate.  

          The Fund may also invest in pools of mortgages which are issued or
          guaranteed by other agencies of the U.S. Government such as FNMA or
          FHLMC.  FNMA and FHLMC Certificates are similar to GNMA
          Certificates except that timely payment of interest and principal
          of each mortgage may not be guaranteed by the full faith and credit
          of the U.S. Government.  

   

          The average life of pass-through pools varies with the maturities
          of the underlying mortgage instruments.   A pool's term may be
          shortened or lengthened by unscheduled or early payment, or by
          slower than expected prepayment, of principal and interest on the
          underlying mortgages.  The occurrence of mortgage prepayments is
          affected by the level of interest rates, general economic
          conditions, the location and age of the mortgage and other social
          and demographic conditions.  As prepayment of individual pools
          varies widely, it is not possible to precisely predict the average
          life of a particular pool.  

    


   

          Collateralized Mortgage Obligations.  The Fund may also invest in
          collateralized mortgage obligations ("CMO"s).  CMOs are debt
          securities issued by a corporation, trust or custodian or by a U.S.
          Government agency or instrumentality, which are collateralized by
          mortgage pass-through securities.   CMOs differ from the 
          pass-through securities  discussed above in that a CMO is divided
          into separate pieces (each a "tranche") with cash flows from the
          securities being allocated to various tranches (a "tranche" is
          essentially a separate security) in a predetermined, specified
          order.  Each tranche has a stated maturity (the latest date by
          which the tranche can be completely repaid, assuming no
          prepayments) and has an average life (the average of the time to
          receipt of a principal payment weighted by the size of the
          principal payment).  The average life is typically used as a proxy
          for maturity because the debt is amortized (repaid a portion at a
          time), rather than being paid off entirely at maturity, as would be
          the case in a straight debt instrument.  Investments in CMO's are
          limited to Planned Amortization Class and sequential issues.  The
          Fund will normally invest only in CMOs that are issued, or have
          cash flow guaranteed, by U.S. Government agencies or
          instrumentalities.  Such CMO's will generally be deemed to be U.S.
          Government Securities 

    

                                          7
<PAGE>

          for purposes of various portfolio restrictions described in this
          Prospectus or the Statement of Additional Information.

          Interest and principal payments from the underlying mortgages are
          typically used to pay interest on all CMO tranches and to retire
          successive class maturities in a sequence.  Thus, the issuance of
          CMO tranches with varying maturities and interest rates may result
          in greater predictability of maturity with one tranche and less
          predictability of maturity with another tranche than a direct
          investment in a mortgage-backed pass-through security (such as a
          GNMA Certificate).  Tranches with shorter maturities typically have
          a lower volatility and lower yield while those with longer
          maturities typically have higher volatility and higher yield. 
          Thus, investments in CMOs can carry more or less risk than mortgage
          pass-through securities and offer more defensive or aggressive
          investment alternatives.
          
          Mortgage Dollar Rolls.  The Fund may enter into "mortgage dollar
          rolls," which are transactions in which the Fund sells a
          mortgage-related security to a dealer and simultaneously agrees to
          repurchase a similar security (but not the same security) in the
          future at a pre-determined price.  See "Mortgage Dollar Rolls" in
          the Fund's Statement of Additional Information for more information
          regarding this type of transaction.

          Additional Risks. Investment by the Fund in mortgage-related U.S.
          Government Securities, such as GNMA Certificates, and CMOs also
          involves other risks.  The yield on a pass-through security is
          typically quoted based on the maturity of the underlying
          instruments and the associated average life assumption.  Actual
          prepayment experience may cause the yield to differ from the
          assumed average life yield.  Accelerated prepayments adversely
          impact yields for pass-throughs purchased at a premium; the
          opposite is true for pass-throughs purchased at a discount.  During
          periods of declining interest rates, prepayment of mortgages
          underlying pass-through certificates can be expected to increase. 
          When the mortgage obligations are prepaid, the Fund reinvests the
          prepaid amounts in securities, the yields of which reflect interest
          rates prevailing at that time.  Therefore, the Fund's ability to
          maintain a portfolio of high-yielding, mortgage-backed securities
          will be adversely affected to the extent that prepayments of
          mortgages must be reinvested in securities which have lower yields
          than the prepaid mortgages.  Moreover, prepayments of mortgages
          which underlie securities purchased at a premium could result in
          capital losses.  Investment in such securities could also subject
          the Fund to "maturity extension risk" which is the possibility that
          rising interest rates may cause prepayments to occur at a slower
          than expected rate.  This particular risk may effectively change a
          security which was considered a short or intermediate-term security
          at the time of purchase into a long-term security.  Long-term
          securities generally fluctuate more widely in response to changes
          in interest rates than short or intermediate-term securities.

          Other Asset-Backed Securities

          The Fund may invest in asset-backed securities which are backed by
          assets other than mortgages.  These securities are collateralized
          by shorter term loans such as automobile loans, computer leases, or
          credit card receivables.  The payments from the collateral are
          passed through to the security holder.  The collateral behind
          asset-backed securities tends to have prepayment rates that do not
          vary with interest rates.  In addition, the short-term nature of
          the loans reduces the impact of any change in prepayment level. 
          These securities are generally issued as the debt of a special
          purpose entity organized solely for the purpose of owning such
          assets and issuing such debt.

          Credit Support.  Asset-backed securities are backed by a
          diversified pool of assets representing the debt of a number of
          different parties.  To lessen the effect of failures by the debtors
          to make payments, such securities may contain elements of credit
          support.  Such credit 

                                          8
<PAGE>

          support falls into two classes:  liquidity protection and
          protection against ultimate default by debtors on the underlying
          assets.  Liquidity protection refers to the provision of advances,
          generally by the entity administering the pool of assets, to ensure
          that scheduled payments on the underlying pool are made in a timely
          fashion.  Protection against ultimate default ensures repayment of
          at least a portion of the debt in the pool.  Such protection may be
          provided through guarantees, insurance policies or letters of
          credit obtained from third parties, through various means of
          structuring the transaction or through a combination of such
          approaches.  

          Additional Risks.  Issuers of asset-backed securities generally
          hold no assets other than the assets underlying such securities and
          any credit support provided.  As a result, although payments on
          such asset-backed securities are obligations of the issuers, in the
          event of defaults on underlying assets not covered by any credit
          support, the issuers are unlikely to have sufficient assets to
          satisfy their obligations on the related asset-backed securities. 
          The loans underlying these securities are subject to prepayments
          which can decrease maturities and returns.  Due to the possibility
          that prepayments will alter the cash flow on asset-backed
          securities, it is not possible to determine in advance the actual
          final maturity date or average life.  Faster prepayment will
          shorten the average life and slower prepayments will lengthen it. 
          However, it is possible to determine what the range of that
          movement could be and to calculate the effect that it will have on
          the price of the security.

          The values of these securities are ultimately dependent upon
          payment of the underlying loans by individuals, and the holders,
          such as the Fund, generally have no recourse against the originator
          of the loans.  The Fund as a holder of these securities may
          experience losses or delays in payment if the original payments of
          principal and interest are not made to the issuer with respect to
          the underlying loans.

          Corporate Bonds

The Fund will normally invest in corporate issues that are rated A or better by
Moody's or S&P or which are not rated by Moody's or S&P but are deemed by
Lincoln Capital to be of comparable quality.

          The Fund may invest in investment grade corporate bonds.  Usually,
          no single corporate issuer will comprise more than 5% of the Fund's
          total assets at the time of investment.  The value of lower-rated
          corporate debt securities is more sensitive to economic changes or
          individual corporate developments than higher-rated investments.
          The Fund will normally invest in corporate issues that are rated A
          or better by Moody's or S & P or which are not rated by Moody's or
          S & P but are deemed by Lincoln Capital to be of comparable
          quality.  

Yankee Bonds

   

          Some of the debt securities in which the Fund may invest are known
          as "Yankee Bonds."  Yankee Bonds are U.S. dollar-denominated debt
          securities issued by foreign entities.  These bonds are not subject
          to currency fluctuation risks.  However, currency fluctuations may
          adversely affect the ability of the issuer to repay the debt and
          may increase the possibility of default.  In addition, the issuing
          entities are sometimes not subject to the same accounting
          principles as U.S. corporations.  The risks of investment in
          foreign issuers may include expropriation or nationalization of
          assets, confiscatory taxation, exchange controls and limitations on
          the use or transfer of assets, and significant withholding taxes. 
          Lincoln Capital will take these factors into consideration when
          determining what Yankee Bonds the Fund will purchase.  Other than
          Yankee Bonds, the Fund does not intend to invest in securities of
          foreign issuers.

    

Delayed Delivery Transactions


                                          9
<PAGE>


The Fund may purchase and sell securities on a when-issued basis.

          The Fund may purchase or sell securities on a when-issued basis. 
          When-issued securities are securities purchased at a certain price
          even though the securities may not be delivered for up to 90 days. 
          The Fund will maintain, with its Custodian, a separate account with
          a segregated portfolio of liquid, high-grade debt securities or
          cash in an amount at least equal to these commitments.  The Fund
          will generally earn income on assets deposited in the segregated
          account.  No payment or delivery is made by the Fund in a
          when-issued transaction until it receives payment or delivery from
          the other party to the transaction.  Although the Fund receives no
          income from the above described securities prior to delivery, the
          market value of such securities is still subject to change.  As a
          consequence, it is possible that the market price of the securities
          at the time of delivery may be higher or lower than the purchase
          price.  The Fund does not intend to remain fully invested when such
          purchases are outstanding.  However, if the Fund were to remain
          substantially fully invested at a time when delayed delivery
          purchases are outstanding, the delayed delivery purchases could
          result in a form of leveraging.  When the Fund has sold a security
          on a delayed delivery basis, the Fund does not participate in
          future gains or losses with respect to the security.  If the other
          party to a delayed delivery transaction fails to deliver or pay for
          the securities, the Fund could miss a favorable price or yield
          opportunity or could suffer a loss.  The Fund may dispose of or
          renegotiate a delayed delivery transaction after it is entered
          into, and may sell when-issued securities before they are
          delivered, which may result in a capital gain or loss.  

Illiquid Securities  
          The Fund will not purchase or hold illiquid securities if more than
          15% of the Fund's net assets would then be illiquid.  If at any
          time more than 15% of the Fund's net assets are illiquid, sales
          will be made as soon as practicable to reduce the percentage of
          illiquid assets to 15% or less.

Repurchase Agreements 

          The Fund may invest in repurchase agreements.  A repurchase
          agreement is an arrangement under which the Fund buys securities
          and the seller (a bank or securities dealer that Lincoln Capital
          believes to be financially sound) simultaneously agrees to
          repurchase the security within a specified time at a higher price
          that includes an amount representing interest on the purchase
          price.  In the event of a default by a seller of a repurchase
          agreement, the Fund could experience both delays in liquidating the
          underlying securities and potential losses.  The Fund will normally
          invest in repurchase agreements maturing in less than seven days. 
          Repurchase agreements maturing in more than seven days are deemed
          to be illiquid and thus subject to the Fund's 15% limitation on
          investments in illiquid securities described above.

Investment Diversification and Concentration
          
          As to seventy-five percent of the Fund's total assets, the Fund
          will not purchase the security of any issuer (other than cash items
          or U.S. Government Securities) if such purchase would cause the
          Fund's holdings of that issuer to amount to more than 5% of the
          Fund's total assets at the time of purchase.  The remaining 25% of
          the Fund's total assets are not so limited which allows Lincoln
          Capital to invest more than 5% of the Fund's total assets in a
          single issuer.  In the event that Lincoln Capital chooses to make
          such an investment, it may expose the Fund to greater risk. 
          However, Lincoln Capital does not intend to (i) make any
          investments in a single corporate issuer if, at that time, such
          issuer would represent more than 5% of the Fund's total assets, or
          (ii) make any investment in a single issuer of asset-backed
          securities if, at that time, such issuer would represent more than
          10% of the Fund's total assets.

          The Fund will not concentrate 25% or more of its total assets in
          any one industry. U.S. Government Securities are not subject to
          this limitation.


                                          10
<PAGE>

Borrowing
          The Fund may not borrow money to purchase securities.  The Fund may
          borrow money only for temporary or emergency purposes, and then
          only from banks in an amount not exceeding 33-1/3% of the value of
          the Fund's total assets (including the amounts borrowed).  The Fund
          will not purchase securities when its borrowings, less amounts
          receivable on sales of portfolio securities, exceed 5% of total
          assets.

Certain Investment Restrictions

          In addition to other non-fundamental restrictions as described
          herein and in the Statement of Additional Information, the Fund
          will not (i) invest in securities that are rated below investment
          grade or are deemed by Lincoln Capital to be the equivalent, if
          unrated; (ii) enter into reverse repurchase agreements;  (iii)
          engage in options or futures transactions; (iv) purchase foreign
          securities other than Yankee Bonds or (v) use leverage except to
          the extent that certain strategies, such as delayed-delivery
          transactions, may be considered leveraged transactions by the
          Securities and Exchange Commission.

Portfolio Transactions

          Lincoln Capital is responsible for the placement of portfolio
          transactions.  It is the Fund's policy to seek to place portfolio
          transactions with brokers or dealers on the basis of best
          execution.  

   

          Generally, Lincoln Capital manages the Fund without regard to
          restrictions on portfolio turnover, except those imposed on its
          ability to engage in short-term trading by provisions of the
          federal tax laws.  Trading in fixed-income securities does not
          generally involve the payment of brokerage commissions, but does
          involve indirect transaction costs.  The higher the turnover rate
          of the Fund's portfolio, the higher the transaction costs borne by
          the Fund will be.  See "Financial Highlights" for the Fund's
          turnover for the fiscal year ended September 30,  1997.

    

Fundamental policies may not be changed without shareholder approval. 

          The Fund's investment objective and the investment restrictions set
          forth as fundamental in the Statement of Additional Information,
          including those in respect to investment concentration and the
          33-1/3% limitation on borrowing as discussed above, are fundamental
          policies and may not be changed without a shareholder vote.  All
          other investment policies of the Fund are not fundamental and may
          be changed by the Board of Trustees.  Any percentage restrictions
          (except those with respect to borrowing and illiquid securities)
          apply at the time of investment without regard to later increases
          or decreases in the values of securities or total or net assets.

          Total Return, Yield and Other Performance Information 

The Fund may advertise total return and yield, which are based on historical
results and are not intended to indicate future performance. 

          Total Return.  A total return is a change in the value of an
          investment during the stated period, assuming all dividends and
          capital gain distributions are reinvested. A cumulative total
          return reflects performance over a stated period of time. An
          average annual total return is the hypothetical annual compounded
          return that would have produced the same cumulative total return if
          the performance had been constant over the entire period. Because
          average annual returns tend to smooth out variations in the
          returns, you should recognize that they are not the same as actual
          year-by-year results. In addition to advertising average annual
          returns for the required standard periods, such returns may be
          quoted for other periods, including periods of less than one year. 
          Further information about the Fund's performance is contained in
          the Annual Report to shareholders which may be obtained from the
          Fund without charge.

                                          11
<PAGE>


          Yield.  Quotations of yield for the Fund will be based on the
          investment income per share (as defined by the Securities and
          Exchange Commission) during a particular 30-day (or one-month)
          period (including dividends and interest), less expenses accrued
          during the period ("net investment income"), and will be computed
          by dividing net investment income by the maximum public offering
          price per share on the last day of the period. 

          The Fund also may provide current distribution information to its
          shareholders in shareholder reports or other shareholder
          communications or in certain types of sales literature provided to
          prospective investors.  Current distribution information for the
          Fund will be based on distributions for a specified period (i.e.,
          total dividends from net investment income), divided by the net
          asset value per share on the last day of the period and annualized. 
          Current distribution rates differ from standardized yield rates in
          that they represent what the Fund has declared and paid to
          shareholders as of the end of a specified period rather than the
          Fund's actual net investment income for that period.

          Performance information for the Fund may also be compared to
          various unmanaged indices, such as the Lehman Brothers Aggregate
          Bond Index, the Lehman Brothers Government/Corporate Index, the
          Salomon Brothers Broad Investment-Grade Bond Index, indices
          prepared by Lipper Analytical Services, and other entities or
          organizations which track the performance of investment companies
          or investment advisers.  Unmanaged indices (i.e., other than
          Lipper) generally do not reflect deductions for administrative and
          management costs and expenses.  Any performance information should
          be considered in light of the Fund's investment objectives and
          policies, characteristics and quality of the portfolio and the
          market conditions during the time period indicated, and should not
          be considered to be representative of what may be achieved in the
          future.  For a description of the methods used to determine yield,
          total return and distribution rates for the Fund, see the Statement
          of Additional Information.

          From time to time, the Fund or its affiliates may provide
          information including, but not limited to, general economic
          conditions, comparative performance data and rankings with respect
          to comparable investments for the same period and for unmanaged
          market indices described in the Statement of Additional
          Information.

Management and Organization of the Fund 
          The Fund is a series of Ariel Growth Fund (doing business as Ariel
          Investment Trust) (the "Trust"),  an open-end diversified
          management investment company organized as a Massachusetts business
          trust on August 1, 1986.  The other series currently offered, which
          are sold under a separate prospectus, are Ariel Growth Fund and
          Ariel Appreciation Fund.

          Shares of the Fund are currently issued in two classes, the
          Institutional Class and the Investor Class.  The Investor Class is
          offered to retail investors under a separate prospectus.  The Board
          of Trustees may offer additional classes in the future and may at
          any time discontinue the offering of any class of shares.  Shares
          have no preemptive or subscription rights and are freely
          transferable.  Each share of the Fund represents an interest in the
          assets of the Fund and has identical voting, dividend, liquidation
          and other rights and the same terms and conditions as any other
          shares except that (i) the expenses that are specific to one class,
          such as distribution expenses and administrative fees, are borne
          solely by such class and (ii) each class of shares votes separately
          with respect to matters in which the interests of one class differ
          from the interests of the other class or any other matters for
          which separate class voting is appropriate under applicable law.

          Because the Investor Class incurs higher administrative and
          distribution fees, that class will have a higher expense ratio and
          will have correspondingly lower returns than the Institutional 

                                          12
<PAGE>

          Class.  You may call 1-800-29-ARIEL (1-800-292-7435) for more
          information regarding the Investor Class of the Fund.

   
          The Trust is not required to hold annual shareholder meetings. 
          Shareholder meetings are held when they are required under the
          Investment Company Act of 1940 or otherwise called for special
          purposes.  Special meetings may be called by the Trustees for
          purposes such as electing and removing Trustees, changing
          fundamental policies, or approving an investment advisory contract. 
          Trustees may be removed at a special meeting of shareholders by a
          vote of two-thirds of the outstanding shares.  Special meetings may
          also be called when requested in writing by the holders of 10% or
          more of the shares eligible to vote at such meetings.    As a
          shareholder, you receive one vote for each share of the Fund you
          own.  
    

The Board of Trustees supervises the Fund's activities and reviews the Trust's
contracts with companies that provide services to the Fund. 

          Board of Trustees 

          BERT N. MITCHELL, CPA
          Chairman and Chief Executive Officer, Mitchell & Titus, LLP
          (independent accountants)

          MARIO L. BAEZA, ESQ.
          Chairman and Chief Executive Officer, Latin America Equity
          Partners, L.P. (venture capital)

   

          JAMES W. COMPTON
          President and Chief Executive Officer, Chicago Urban League (non
          profit community organization)

    

   

          WILLIAM C. DIETRICH, CPA
           Chief Financial Officer,  Streamline Mid-Atlantic, Inc.
          (computerized shopping service)

    
          
          ROYCE N. FLIPPIN, JR.
          President, Flippin Associates (consultants); formerly Director of
          Program Advancement, Massachusetts Institute of Technology 

          JOHN G. GUFFEY, JR.
          Chair, Calvert Social Investment Foundation; Treasurer and
          Director, Silby, Guffey and Co., Inc. (venture capital)

          MELLODY L. HOBSON
          Senior Vice President, Director of Marketing, Ariel Capital
          Management, Inc.    

          CHRISTOPHER G. KENNEDY
          Executive Vice President and Director, Merchandise Mart Properties,
          Inc. (real estate management)

          ERIC T. McKISSACK, CFA
          Vice Chairman and Co-Chief Investment Officer, Ariel Capital
          Management, Inc.

Ariel Capital Management, Inc. serves as the Adviser and the Administrator to
the Fund.


                                          13
<PAGE>

   

          The Adviser is a privately held investment management firm,
          controlled by John W. Rogers, Jr. and owned by its employees.  The
          Adviser is located at 307 N. Michigan Avenue, Suite 500, Chicago,
          Illinois 60601.  As of December 31,  1997, the Adviser had assets
          under management of just  over $1.9 billion, including assets of
          the Funds.

    

   

          Subject to the overall supervision of the Board of Trustees and
          pursuant to the Investment Advisory Agreement, Ariel Capital
          Management, Inc. (the "Adviser") acts as the  manager of the Fund. 
          The Advisor is responsible for certain management services and pays
          all of the Fund's expenses other than the Adviser's fees under the
          Investment Advisory Agreement and the Administrative Services
          Agreement, the expenses assumed by the Adviser under the
          Administrative Services Agreement, interest, taxes, brokerage
          commissions, and extraordinary expenses. Under the Investment
          Advisory Agreement, the Adviser is paid a fee based on the average
          daily net assets of the Fund at the annual rate of 0.35%.  The
          Adviser also acts as investment adviser and administrator to Ariel
          Growth Fund and Ariel Appreciation Fund, the other two series of
          the Trust.

    

          The Adviser is also the Fund's Administrator.  Under the
          Administrative Services Agreement, the Administrator is responsible
          for providing, arranging for or facilitating transfer agency and
          shareholder servicing; the preparation, printing and distribution
          of notices, proxy materials, reports to regulatory bodies and
          reports to shareholders related to a specific class; state
          securities qualifications; SEC registrations and shareholder
          meetings.  The Administrator pays all of the Fund's expenses
          related to the services to be provided under the Administrative
          Services Agreement, all fees and expenses of Trustees incurred as a
          result of a matter related solely to one class of shares of the
          Fund and, generally, the Fund's auditing and legal fees for
          professional services related solely to one class of the shares of
          the Fund.  The Administrator is not responsible for paying any
          legal, accounting or other expenses related to any litigation
          affecting the Fund.  For services under the Administrative Services
          Agreement, the Institutional Class pays a fee based on the average
          daily net assets of the Institutional Class at the annual rate of
          0.10%.

   
Sub-Administrator

          The Adviser has entered into an agreement with Sunstone Financial
          Group, Inc. ("Sunstone") under which Sunstone provides certain
          administrative services to the Funds.  Under the direction and
          supervision of the Adviser, Sunstone performs fund accounting
          services, prepares certain reports for the Board of Trustees and
          prepares minutes of Board meetings.  For its services, Sunstone
          receives from the Adviser 0.041% of the average net assets of the
          Funds.  Sunstone does not receive any compensation from the Funds.

    

Sub-Adviser

          Lincoln Capital Management Company ("Lincoln Capital"), 200 South
          Wacker Drive, Chicago, IL  60606, acts as the Sub-Adviser of the
          Fund.  Lincoln Capital manages the day-to-day investment operations
          for the Fund.  The Fund pays no fees directly to Lincoln Capital. 
          Lincoln Capital receives fees from the Adviser at the annual rate
          of 0.30% of the average daily net assets up to $50 million; 0.20%
          for the next $50 million; 0.15% for the next $150 million and 0.10%
          for amounts greater than $250 million.

          The Managing Directors and controlling shareholders of Lincoln
          Capital and their titles, are as follows:

   

                      Timothy H. Ubben, Chairman
                      J. Parker Hall, III,  Chief Executive Officer
                      Kenneth R. Meyer, President
                      David Fowler, Executive Vice President
                      Jay H. Freedman, Executive Vice President

    
                      
                                          14
<PAGE>
   
                      Richard W. Knee, Executive Vice President
    

                      Ray B. Zemon, Executive Vice President

Portfolio Management

   
          The Fund's duration decisions are made by a strategy committee 
          comprised of five senior officers of Lincoln Capital: Timothy
          Doubek, Richard W. Knee, Peter Knez, Kenneth R. Meyer, and Ray B.
          Zemon.  The five members of the strategy committee average  17
          years of investment experience.  Investment selections for the Fund
          are made by members of the fixed income group: Pamela Allen,
          Timothy Doubek, Terrence J. Glomski, Lorraine L. Holland, Andrew A.
          Johnson, Kostas Iordanidis, Richard W. Knee, Peter Knez, Kenneth R.
          Meyer, and Ray B. Zemon.  The members of the fixed-income group
          average 13.5 years of investment experience.  As of December 31, 
          1997, Lincoln Capital, as a whole, had $47.9 billion of assets
          under management of which $25 billion is managed in fixed-income
          strategies.
    

Performance History of Lincoln Capital

   
          Set forth below are certain performance data, provided by Lincoln
          Capital, relating to annual average investment results of a
          composite of client advisory accounts ("Advisory Accounts") whose
          portfolios were managed by Lincoln Capital over a period of 
          sixteen years, since Lincoln Capital began operations.  The
          Advisory Accounts had the same investment objective as the Fund and
          were managed using substantially similar, though not necessarily
          identical, investment strategies and techniques as those used by
          the Fund.  Because of the similarities in investment strategies and
          techniques, Lincoln Capital believes that the Advisory Accounts are
          sufficiently comparable to the Fund to make the performance data
          listed below relevant to its investors.  Also set forth below, for
          comparison, are the performances of widely recognized indices of
          market activity based upon the aggregate performance of selected
          unmanaged portfolios of publicly traded fixed-income securities.
    

          The results presented are not intended to predict or suggest
          returns that will be experienced by the Fund or the return that an
          investor will achieve by investing in the Fund.  The Fund is
          subject to different costs, including investment management,
          administration and registration fees that were not incurred by the
          Advisory Accounts.  Different methods of determining the
          performance from those described in the footnote to the chart below
          may result in different performance figures. Investors should not
          rely on the following data as an indication of future performance
          of Lincoln Capital or of the Fund.

                                 ANNUAL TOTAL RETURN

                                                           
                                                                     Salomon
                                         Lincoln                     Brothers
                             Average     Capital's      Lehman         Broad
                             Account      Active        Brothers    Investment-
               Number of     Size ($        Fixed      Aggregate   Grade Bond
    Year      of Accounts   millions)   Composite(1)     Index(2)    Index(2)


    1982          11            $48      37.19%         32.62%        31.79%
    1983          15             50       7.59           8.36          8.21
    1984          18             62      14.33          15.15         14.99
    1985          14             96      24.83          22.10         22.26
    1986          17             98      17.41          15.26         15.43
    1987          17            105       3.37           2.76          2.60
    1988          19            109       7.64           7.89          7.99
    1989          23             90      14.79          14.53         14.43
    1990          25            118       8.47           8.96          9.09
    1991          25            150      15.91          16.00         15.98
    1992          29            148       7.84           7.40          7.58
    1993          29            150      11.09           9.75          9.92
    1994          27            140      -2.09          -2.92         -2.85

                                          15
<PAGE>

   

    1995          31            221      16.98          18.47         18.53
    1996          29            241       3.39           3.63          3.62
    1997          22            291       8.97           9.65          9.64

    


   

                                Annualized Performance
                       for the period ended December 31,  1997

                                             Lincoln        Lehman
                                             Capital        Aggrgate
               5 Year Annualized              7.47%         7.48%
               10 Year Annualized             9.16           9.18 
               Since Inception Annualized    12.01          11.56
                         

    


(1)            These figures are dollar-weighted, average annual investment
               results expressed as a percentage return.  Returns shown for
               Lincoln Capital are after deduction of investment advisory fees. 
               The accounts represented in the composite are all accounts
               managed in a manner that is substantially similar to the
               investment management of the Fund and are most of Lincoln
               Capital's active accounts.

(2)            The Lehman Brothers Aggregate Index and the Salomon Brothers
               Broad Investment-Grade Bond Index are unmanaged indices of
               fixed-income securities which are composed of securities that are
               substantially similar to the types of securities in which the
               Advisory Accounts and the Fund invest.

Ariel Distributors, Inc. is the Principal Underwriter to the Fund

               Ariel Distributors, Inc. serves as the Fund's principal
               underwriter.  Under the terms of its Underwriting Agreement,
               Ariel Distributors markets and distributes the shares of the
               Trust and is responsible for payment of commissions and service
               fees to broker-dealers, banks, and financial services firms,
               preparation of advertising and sales literature, and printing and
               mailing of prospectuses to prospective investors.  Ariel
               Distributors is a wholly-owned subsidiary of the Adviser.

The Transfer Agent and Custodian.

               Investors Fiduciary Trust Company ("IFTC"), 127 West 10th Street,
               Kansas City, Missouri 64105,  is the Fund's transfer agent,
               custodian and dividend disbursing and shareholder servicing
               agent. 

               How to Buy Shares 

Initial Purchases

   

               Shares are sold at the net asset value next computed after
               acceptance of your order by the Fund.  The minimum initial
               investment in the Institutional Class is $1,000,000.  However,
               the Adviser may waive the minimum initial investment under
               circumstances in which the Adviser believes an investor will meet
               such minimum within a reasonable time.  A completed and signed
               application is required for each new account you open, regardless
               of the method you choose for making your initial investment. An
               account application accompanies this prospectus. Additional forms
               may be required from corporations, associations and certain
               financial institutions. If you have any questions or need
               additional applications, call 1-800-29-ARIEL (1-800-292-7435). 

    

By Mail 
               To purchase shares by mail, please make your check payable to
               Ariel Mutual Funds and mail it with an application, indicating
               which of the Ariel Mutual Funds you would like to buy, to: 

                         Ariel Mutual Funds
                         P.O. Box 419121
                         Kansas City, Missouri 64141-6121 

               All purchases by check should be in U.S. dollars and made payable
               to Ariel Mutual Funds.  Third party checks, except those payable
               to an existing shareholder who is a natural person (as opposed to
               a corporation or partnership), credit cards, and cash will not be
               accepted.  When purchases are made by check or periodic 


                                          16
<PAGE>

               automatic investment, redemptions will not be allowed until the
               investment being redeemed has been in the account for 15 calendar
               days.

By Wire 
               You may also purchase shares by bank wire. Just call us at
               1-800-29-ARIEL (1-800-292-7435) and we will ask you your name,
               address, social security or tax identification number, the amount
               of your investment, the name of the Ariel Mutual Fund in which
               you wish to invest as well as the name and address of the
               financial institution that will be wiring your investment to the
               Fund.  We will immediately give you an account number and you may
               then have your financial institution wire federal funds to the
               Custodian with the following instructions: 

                         Ariel Mutual Funds
                         c/o Investors Fiduciary Trust Company 
                         127 West 10th Street 
                         Kansas City, MO 64105 
                         ABA #101003621 
                         Account No. 7528205 

                         The name of the Ariel Mutual Fund(s) and the class in
                         which you wish to invest
                         Your shareholder account number 
                         The name in which your account is registered 

               We accept wires at no charge. However, your bank may charge you
               for this service. 

Subsequent Purchases 
               You may make subsequent investments in any amount.  To invest
               directly by bank wire, follow the instructions as shown above for
               initial investments, except that there is no need to call us
               first. Just contact your financial institution. 

               To add to your account by mail, please send your check or money
               order payable to Ariel Mutual Funds with the detachable stub from
               the bottom of your most recent account statement, or drop us a
               note that includes the registered account name, account number,
               the name of the Fund and amount you wish to invest. Please
               remember that subsequent purchases should be sent to: 
               
                         Ariel Mutual Funds 
                         P.O. Box 419121
                         Kansas City, Missouri 64141-6121


Automatic Investing through Your Bank 

               You may arrange for automatic investing whereby the Custodian
               will be authorized to initiate a debit to your bank account of a
               specific amount to be used to purchase shares of the Fund on a
               monthly or quarterly basis. After each automatic investment, you
               will receive a transaction confirmation and the debit should be
               reflected on your next bank statement. You may terminate the plan
               at any time, and we may modify or terminate the plan at any time.
               If, however, you terminate an automatic investment plan with an
               account balance of less than $1,000,000, we reserve the right to
               close your account. See "Redeeming Shares-Other Information About
               Redemptions."  If you desire to utilize this automatic investment
               option, please indicate your intention to do so on the
               application included with this prospectus. 

   

               Please note that each time an automatic investment is rejected,
               you will be charged a $10 fee plus costs incurred by the Funds. 
               After two successive attempts to purchase funds through the
               automatic investment program have been rejected, your account
               will be removed from this program.  

    

Purchasing Through Retirement Plans


                                          17
<PAGE>

               Contact the Adviser for complete information kits discussing the
               plans and their benefits, provisions and fees. 

   

               You may establish your new account under one of several
               tax-deferred plans. These plans let you invest for retirement and
               shelter your investment income from current taxes.  Please call
               1-800-29-ARIEL for more information.

    

               Net Asset Value 

               Net asset value per share ("NAV") refers to the worth of one
               share. NAV is computed by adding the value of all portfolio
               holdings, plus other assets, deducting liabilities and then
               dividing the result by the number of shares outstanding.  The
               Fund's NAV will vary daily based on the market values of its
               investments. 

               Fixed-income securities, including those to be purchased under
               firm commitment agreements (other than obligations having a
               maturity of 60 days or less), are normally valued on the basis of
               quotes obtained from brokers and dealers or pricing services. 
               Short-term investments having a maturity of 60 days or less are
               valued at amortized cost, unless the Board of Trustees determines
               that such method is not appropriate under specific circumstances.
               Assets for which there are no quotations available will be valued
               at fair value as determined by the Board of Trustees. 

   

               The NAV is calculated at the close of the regular session of the
               New York Stock Exchange (normally 3:00 p.m. Central time).  The
               Fund is closed for business any day the New York Stock Exchange
               is closed and on the following holidays: Columbus Day,  and
               Veterans' Day.  All purchases of Fund shares will be confirmed
               and credited to your account in full and fractional shares. 

    

               In-Kind Purchases

               Under certain circumstances, shares of the Fund may be purchased
               using securities, so long as the securities delivered to the Fund
               meet the investment objective and policies of the Fund, and are
               otherwise acceptable to Lincoln Capital, which reserves the right
               to reject all or any part of the securities offered in exchange
               for shares of the Fund.  See the Statement of Additional
               Information for more details and for the conditions which apply
               to in-kind purchases.  

               When Your Account Will Be Credited

Before you buy shares, please read the following information to make sure your
investment is accepted and credited properly.

   

               Your purchase will be processed at the next offering price based
               on the net asset value next calculated after your order is
               received and accepted.  Such calculation is made at the close of
               regular session trading on the New York Stock Exchange, which is
               usually 3:00 p.m. Central time.  Except as provided above, all
               your purchases must be made in U.S. dollars and checks must be
               drawn on U.S. banks.  No cash will be accepted.  The Fund
               reserves the right to suspend the offering of shares for a period
               of time or to reject any specific purchase order.  If your check
               does not clear or your automatic investment is rejected, your
               purchase will be canceled and you will be charged a 

    

                                          18
<PAGE>

               $10 fee plus costs incurred by the Fund.  When you purchase by
               check, the Fund can hold payment on redemptions until they are
               reasonably satisfied that the investment is collected (normally
               up to 15 calendar days from the purchase date).  To avoid this
               collection period, you can wire federal funds from your bank,
               which may charge you a fee. 

               Certain financial institutions or broker-dealers which have
               entered into a sales agreement with the Distributor may enter
               confirmed purchase orders on behalf of customers by phone, with
               payment to follow within a number of days of the order as
               specified by the program. If payment is not received in the time
               specified, the financial institution could be liable for
               resulting fees or losses. State securities laws may require such
               firms to be licensed as securities dealers in order to sell
               shares of the Fund. 

               Other Information about Purchasing Shares 

   

               Although there is no sales charge imposed by the Fund when you
               purchase shares directly, certain dealers or financial
               institutions which sell shares of Ariel Mutual Funds may impose
               charges for their services, and such charges may constitute a
               significant portion of a smaller account. 

    

               The Fund does not issue share certificates unless you
               specifically request one each time you make a purchase.
               Certificates are not issued for fractional shares.  Also, shares
               represented by certificates may not be redeemed by telephone. See
               "Redeeming Shares" for information on how to redeem your shares. 

   

                How to Exchange Shares 

    

You may exchange shares of the Fund for shares of the other Ariel Mutual Funds
and for shares of certain money market funds. 

               You may exchange your shares in the Fund for shares of the Fund's
               Investor Class or for shares of the other Ariel Mutual Funds at
               no additional charge as long as your total investment in each
               class or Fund meets the minimum investment required for that
               class or Fund. 

   
               You may also exchange your shares in any Ariel Mutual Fund for
               shares of Cash Resource Trust Money Market Fund, Cash Resource
               Trust U.S. Government Money Market Fund or Cash Resource Trust
               Tax-Exempt Money Market Fund (collectively, the "Cash Resource
               Trust Funds") at no additional charge as long as your total
               investment meets any required minimum.  This exchange privilege
               is a convenient way to buy shares in a money market fund in order
               to respond to changes in your goals or in market conditions.
               These money market funds are no-load funds managed by
               Commonwealth Advisors, Inc.  

    


   
               Before exchanging your shares into shares of the Fund's Investor
               Class, shares of any other Ariel Mutual Fund or shares of any
               Cash Resource Trust Fund, read the applicable prospectus. To
               obtain a prospectus for any of these funds, just call
               1-800-29-ARIEL (1-800-292-7435).

    

By Mail

   

               To exchange your shares of the Fund into shares of one of the
               other Ariel Mutual Funds, or Cash Resource Trust Funds just send
               a written request to: 

    

                         Ariel Mutual Funds
                         P.O. Box 419121
                         Kansas City, Missouri 64141-6121 

   

               This request should include your name, account number, the name
               of the Fund you currently own, the name of the Ariel Mutual Fund
               or Cash Resource Trust Fund you wish to exchange into and the
               dollar amount or number of shares you wish to exchange. Please
               remember that you cannot place any conditions on your request. 

    

                                          19
<PAGE>
   
    
By Telephone

               Unless you have elected not to have telephone transaction
               privileges by checking the appropriate box in your application,
               you may also make exchanges by calling 1-800-29-ARIEL
               (1-800-292-7435). Exchanges made over the phone may be made by
               any person, not just the shareholder of record. You may only
               exchange shares by telephone if the shares you are exchanging are
               not in certificate form. Certain other limitations and conditions
               apply to all telephone transactions.  Before using your telephone
               privilege, please read "Telephone Transactions." 

               Other Information about Exchanging Shares 

               All accounts opened as a result of using the exchange privilege
               must be registered in the same name and taxpayer identification
               number as your existing account with the Ariel Mutual Funds. 

               Because of the time needed to transfer money between funds, you
               may not exchange into and out of the same fund on the same or
               successive days; there must be at least one day between
               exchanges. You may exchange your shares of the Fund only for
               shares that have been registered for sale in your state.  See
               also "Dividends, Capital Gains and Taxes." 

               Remember that each exchange represents the sale of shares of one
               Fund and the purchase of shares of another.  Therefore, you could
               realize a taxable gain or loss on the transaction.

               The Fund reserves the right to terminate or modify the exchange
               privilege with at least 60 days' written notice. If your account
               is subject to backup withholding, you may not use the exchange
               privilege. 

               Because excessive trading can hurt the Fund's performance and
               shareholders, the Fund also reserves the right to temporarily or
               permanently terminate, with or without advance notice, the
               exchange privilege of any investor who makes excessive use of the
               exchange privilege (e.g. more than five exchanges per calendar
               year). Your exchanges may be restricted or refused if the Fund
               receives or anticipates simultaneous orders affecting significant
               portions of the Fund's assets. In particular, a pattern of
               exchanges with a "market timer" strategy may be disruptive to the
               Fund. 

               If you have any share certificates, you must include them with
               your exchange request.  For certificate delivery instructions see
               "Redeeming Shares--By Mail." 

               Special Services and Charges

               The Fund pays for shareholder services but not for special
               services that are required by a few shareholders, such as a
               request for a historical transcript of an account.  You may be
               required to pay a research fee for these special services.

   
               If you are purchasing shares of the Fund through a program of
               services offered by a broker-dealer or financial institution, you
               should read the program materials in conjunction with this
               prospectus.  Certain features may be modified in these programs,
               and administrative charges may be imposed by  these institutions
               for the services rendered. 
    

   
               How to Redeem Shares 
    

By Mail 

   
               You may redeem shares from your account by sending a letter of
               instruction, your name, the name of the Fund and account number
               from which shares are to be redeemed, the number of shares or
               dollar amount and where you want your check to be sent. Simply
               send your written request to redeem your shares to the Transfer
               Agent as follows: 
    

                                          20
<PAGE>


                         Ariel Mutual Funds 
                         P.O. Box 419121 
                         Kansas City, Missouri 64141-6121 

               Certain shareholders, such as corporations, trusts and estates,
               may be required to submit additional documents. The letter of
               instruction must be signed by all required authorized signers. 
               Please remember that you cannot place any conditions on your
               request. If any share certificates were issued, they must be
               returned duly endorsed or accompanied by a separate stock
               assignment.   Under certain circumstances, signature guarantees
               may be required.  Please call 1-800-29-ARIEL (1-800-292-7435) for
               more information.

By Telephone 
               Unless you have elected not to have telephone transaction
               privileges by checking the box in your application, you may also
               redeem shares by calling 1-800-29-ARIEL (1-800-292-7435) and
               receive a check by mail.  The check can only be issued for up to
               $25,000, and only to the registered owner, and may only be sent
               to the address of record, which must have been on file for at
               least 60 days.  Shares represented by certificates may not be
               redeemed by telephone.  See "Telephone Transactions" for more
               information.

By Wire
               Payment for your shares may also be made to you by wire if you
               have selected this option in your application and have named a
               commercial bank or savings institution with a routing number to
               which we can send your money.

               Once you have applied for wire redemption privileges, you or any
               other person can make such a request by calling 1-800-29-ARIEL
               (1-800-292-7435). You may also use your wire privilege by mailing
               a signed request that includes the name of the Fund, account
               number and amount you wish to have wired, by writing to:

                         Ariel Mutual Funds
                         P.O. Box 419121
                         Kansas City, Missouri 64141-6121

               The proceeds will be sent only to the financial institution you
               have designated on your application. You may terminate the wire
               redemption privilege by notifying us in writing. See the
               restrictions under "Telephone Transactions" as they also apply to
               wire redemptions.

               Other Information about Redemptions

To ensure acceptance of your redemption request, please follow the procedures
described here and below.

   

               Shares are redeemed at the net asset value next computed after
               acceptance of your order by the Fund.  There is no charge for
               redeeming your shares. If, however, you redeem shares through
               certain dealers  or financial institutions, you may be charged a
               fee when you redeem your shares. 

    

               Once your shares are redeemed, the proceeds will normally be sent
               to you on the next business day. However, if making immediate
               payment could adversely affect the Fund, it may take up to seven
               calendar days. When the New York Stock Exchange is closed (or
               when trading is restricted) for any reason other than its
               customary weekend or holiday closing, or under any emergency
               circumstances as determined by the Securities and Exchange
               Commission, redemptions may be suspended or payment dates
               postponed. 

   

               You may redeem all or a portion of your shares on any business
               day during which the New York Stock Exchange is open for business
               except the following holidays: Columbus Day,  and Veterans' Day. 
               Your shares will be redeemed at the net asset value next
               calculated after your redemption request is received by the
               Transfer Agent in proper form. Redemptions made after the New
               York Stock Exchange has closed will be made at the next day's net
               asset value. Remember that if you redeem shortly after purchasing
               shares, the Fund may 

    

                                          21
<PAGE>

               hold payment on the redemption of your shares until it is
               reasonably satisfied that payments made by check have been
               collected (normally up to 15 calendar days after investment).

Minimum account balance is $1,000,000.

               Please maintain a balance in your Institutional Class account of
               at least $1,000,000.  If, due to shareholder redemptions, the
               value of your account in the Fund falls below $1,000,000, the
               account may be closed and the proceeds mailed to you at your
               address of record. You will be given 30 days' notice that your
               account will be closed unless you make an additional investment
               to increase your account balance to the $1,000,000 minimum.

               Redemptions in Kind

               If conditions arise that would make it undesirable for the Fund
               to pay for all redemptions in cash, the Fund may authorize
               payment to be made in marketable portfolio securities.  However,
               the Fund has obligated itself under the Investment Company Act of
               1940 to redeem for cash all shares of the Fund presented for
               redemption by any one shareholder in any 90-day period up to the
               lesser of $250,000 or 1% of the Fund's net assets.  Securities
               delivered in payment of redemptions would be valued at the same
               value assigned to them in computing the Fund's net asset value
               per share.  Shareholders receiving such securities may incur
               brokerage costs or be subject to dealer markdowns when these
               securities are sold.

               Telephone Transactions

               If you have telephone transaction privileges, you may purchase,
               redeem, or exchange shares or wire funds by telephone as
               described in this prospectus.  You automatically have telephone
               privileges unless you elect otherwise. These privileges, however,
               may not be available through certain dealers and financial
               institutions.  By exercising the telephone privilege to sell or
               exchange shares, you agree that the Fund shall not be liable for
               following telephone instructions reasonably believed to be
               genuine.  Reasonable procedures will be employed to confirm that
               such instructions are genuine and, if not employed, the Fund may
               be liable for unauthorized instructions.  Such procedures will
               include a request for a personal identification number and tape
               recording of the instructions. You should verify the accuracy of
               telephone transactions immediately upon receipt of your
               confirmation statement. 

               During unusual market conditions, we may have difficulty in
               accepting telephone requests, in which case you should mail your
               request. 

               The Fund reserves the right to terminate, suspend or modify
               telephone transaction privileges. 

               Dividends, Capital Gains and Taxes 

Each year, the Fund distributes substantially all of its net investment income
and capital gains to shareholders. 

               The tax discussion in this section is not intended as a complete
               or definitive discussion of the tax effects of investment in the
               Fund.  Each investor should consult his or her own tax adviser
               regarding the effect of federal, state and local taxes related to
               ownership, exchange or sale of Fund shares.

               The Fund intends to qualify as a regulated investment company
               under Subchapter M of the Internal Revenue Code, as amended (the
               "Code").  As such, the Fund generally will not pay Federal income
               tax on the income and gains it pays as dividends to its
               shareholders.  In order to avoid a 4% Federal excise tax, the
               Fund intends to distribute each year substantially all of its net
               income and gains.

   

               Dividends from net investment income are declared daily and paid 
               monthly.  Net investment income consists of the interest income,
               net short-term capital gains, if any, and dividends declared and
               received on investments, less expenses.  Distributions of net
               short-term capital gains (treated as dividends for tax purposes)
               and net long-term capital gains, if any, are normally declared
               and paid by the Fund once a year.

    

                                          22
<PAGE>
   

    


Dividend and Distribution Payment Options

               Dividends and any distributions from the Fund are automatically
               reinvested in the Fund at net asset value, unless you elect to
               have the dividends of $10 or more paid in cash. You must notify
               the Fund in writing prior to the record date to change your
               payment options. If you elect to have dividends and/or
               distributions paid in cash, and the U.S. Postal Service cannot
               deliver the check, or if it remains uncashed for six months, it,
               as well as future dividends and distributions, will be reinvested
               in additional shares. 

Taxes on distributions

               Distributions are subject to federal income tax, and may also be
               subject to state or local taxes.  Distributions are taxable when
               they are paid, whether they are received in cash, or reinvested. 
               However, distributions declared in December and paid in January
               are taxable as if they were paid on December 31.  For federal tax
               purposes, the Fund's income and short-term capital gain
               distributions are taxed as dividends; long-term capital gain
               distributions are taxed as long-term capital gains.  Some
               dividends may be exempt from state or local income tax as income
               derived from U.S. Government Securities.  You should consult your
               tax adviser on the taxability of your distributions.

You may realize a capital gain or loss when you sell or exchange shares. 


   

               If you sell your shares or exchange them for shares of another
               fund, you will have a short or long-term capital gain or loss,
               depending on how long you owned the shares which were sold or
               exchanged.  However, the Trust believes that an exchange between
               classes of the same fund are non-taxable.  In January, you will
               be sent a form indicating the proceeds from all sales, including
               exchanges. You should keep your annual year-end account
               statements to determine the cost (basis) of the shares to report
               on your tax returns.

    

               If the Fund does not have your correct Social Security or
               Corporate Tax Identification Number ("TIN") and a signed
               certified application or Form W-9, Federal law requires the Fund
               to withhold 31% of your dividends and certain redemptions. You
               will be prohibited from opening another account by exchange and
               you may be subject to a fine. If this TIN information is not
               received within 60 days after your account is established, your
               account may be redeemed at the current NAV on the date of
               redemption. The Fund reserves the right to reject any new account
               or any purchase order for failure to supply a certified TIN.

   

    

                                          23
<PAGE>
INVESTMENT ADVISER AND
SERVICES ADMINISTRATOR
Ariel Capital Management, Inc.
307 North Michigan Avenue, Suite 500
Chicago, Illinois 60601
1-800-29-ARIEL (1-800-292-7435) fax (312) 726-7473

SUB-ADVISER
Lincoln Capital Management Company
200 South Wacker Drive, Suite 2100
Chicago, IL  60606

PRINCIPAL UNDERWRITER
Ariel Distributors, Inc.
307 North Michigan Avenue, Suite 500
Chicago, Illinois  60601

INDEPENDENT AUDITORS 
Ernst & Young LLP
233 South Wacker Drive 
Chicago, Illinois 60606 

TRANSFER AGENT AND CUSTODIAN 
Investors Fiduciary Trust Company 
127 West 10th Street 
Kansas City, Missouri 64105 

LEGAL COUNSEL 
D'Ancona & Pflaum 
30 North LaSalle Street, Suite 2900 
Chicago, Illinois 60602 

BOARD OF TRUSTEES 

Bert N. Mitchell, CPA (Chairman of the Board of Trustees)
Chairman and Chief Executive Officer, Mitchell & Titus LLP

Mario L. Baeza, ESQ. 
Chairman and Chief Executive Officer Latin America Equity Partners, L.P.



   

James W. Compton
President and Chief Financial Officer, Chicago Urban League

William C. Dietrich, CPA 
 Chief Financial Officer,  Streamline Mid-Atlantic, Inc.

    

Royce N. Flippin, Jr.
President, Flippin Associates; formerly Director of Program Advancement 
Massachusetts Institute of Technology 

John G. Guffey, Jr. 
Chair, Calvert Social Investment Foundation 
Treasurer and Director, Silby, Guffey and Co., Inc. 

Mellody L. Hobson 
Senior Vice President, Director of Marketing
Ariel Capital Management, Inc. 

Christopher G. Kennedy
Executive Vice President and Director,
Merchandise Mart Properties, Inc.

Eric T. McKissack, CFA
Vice Chairman and Co-Chief Investment Officer,
Ariel Capital Management, Inc.



                                          24

<PAGE>

   
                                ARIEL INVESTMENT TRUST
               STATEMENT OF ADDITIONAL INFORMATION--February 1, 1998
                              Ariel Appreciation Fund
                               and Ariel Growth Fund
                             307 North Michigan Avenue 
                                     Suite 500 
                              Chicago, Illinois 60601 
                          1-800-29-ARIEL (1-800-292-7435)
    

Ariel Appreciation Fund ("Appreciation Fund") and Ariel Growth Fund ("Growth
Fund") (collectively, the "Ariel Mutual Funds" or the "Funds") are series of
Ariel Growth Fund, doing business as Ariel Investment Trust (the "Trust").

   
The Trust's audited financial statements included in the Annual Report to
Shareholders for the Funds dated September 30, 1997 are expressly incorporated
herein by reference and made a part of this Statement of Additional Information.
Copies of the Annual Report may be obtained free of charge by writing or calling
the Funds.
    


   
This Statement of Additional Information is not a prospectus but provides
information that should be read in conjunction with the Funds' Prospectus dated
February 1, 1998 and any supplement thereto, which may be obtained free of
charge by writing or calling the Funds.
    

                                 TABLE OF CONTENTS 
   
INVESTMENT RESTRICTIONS  . . . . . . . . . . . . . . . . . . . . . . . . .1
ADDITIONAL INFORMATION ABOUT LENDING SECURITIES AND 
  REPURCHASE AGREEMENTS  . . . . . . . . . . . . . . . . . . . . . . . . .2
DIVIDENDS, DISTRIBUTIONS AND TAXES . . . . . . . . . . . . . . . . . . . .3
CALCULATION OF TOTAL RETURN  . . . . . . . . . . . . . . . . . . . . . . .4
INVESTMENT ADVISER AND SERVICES ADMINISTRATOR  . . . . . . . . . . . . . .5
METHOD OF DISTRIBUTION . . . . . . . . . . . . . . . . . . . . . . . . . .7
TRANSFER AGENT AND CUSTODIAN . . . . . . . . . . . . . . . . . . . . . . .7
PORTFOLIO TRANSACTIONS . . . . . . . . . . . . . . . . . . . . . . . . . .8
INDEPENDENT AUDITORS . . . . . . . . . . . . . . . . . . . . . . . . . . .8
GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . .8
TRUSTEES AND OFFICERS. . . . . . . . . . . . . . . . . . . . . . . . . . .9
COMPENSATION SCHEDULE. . . . . . . . . . . . . . . . . . . . . . . . . . 10
SIGNIFICANT SHAREHOLDERS . . . . . . . . . . . . . . . . . . . . . . . . 11
    


                                           
<PAGE>

 
                               INVESTMENT RESTRICTIONS 

The Trust has adopted the following investment restrictions as fundamental
policies. These restrictions cannot be changed as to a Fund without the approval
of the holders of a majority of the outstanding shares of the Fund. As defined
in the Investment Company Act of 1940, this means the lesser of the vote of (a)
67% of the shares of the Fund at a meeting where more than 50% of the
outstanding shares are present in person or by proxy, or (b) more than 50% of
the outstanding shares of the Fund. Shares have equal rights as to voting. 

A Fund may not: 

     (1) Purchase securities of any issuer (other than obligations issued, or
     guaranteed by, the United States Government, its agencies or
     instrumentalities) if, as a result, more than 5% of the value of the Fund's
     total assets would be invested in securities of such issuer. 

     (2) Concentrate more than 25% of the value of its total assets in any one
     industry; provided, however, that there is no limitation with respect to
     investments in obligations issued or guaranteed by the United States
     Government or its agencies and instrumentalities. 

     (3) Purchase more than 10% of the outstanding voting securities of any
     issuer. 

     (4) Make loans (other than loans of its portfolio securities, loans through
     the purchase of money market instruments and repurchase agreements, or
     loans through the purchase of bonds, debentures or other debt securities of
     the types commonly offered privately and purchased by financial
     institutions). The purchase of a portion of an issue of publicly
     distributed debt obligations shall not constitute the making of loans. (See
     also "Additional Information about Lending Securities and Repurchase
     Agreements -- Loans of Portfolio Securities.")

     (5) Underwrite the securities of other issuers. 

     (6) Purchase securities which are subject to legal or contractual
     restrictions on resale or for which there is no readily available market or
     which are repurchase agreements not terminable within seven days if at the
     time of purchase more than 5% of the Appreciation Fund's total assets or
     10% of the Growth Fund's total assets would be so invested. 

     (7) Purchase from or sell to any of the Fund's officers or trustees, or
     firms of which any of them are members, any securities (other than capital
     stock of the Fund), but such persons or firms may act as brokers for the
     Fund for customary commissions. 

     (8) Issue senior securities or borrow money, except from banks as a
     temporary measure for extraordinary or emergency purposes and then only in
     an amount up to 10% of the value of its total assets in order to meet
     redemption requests without immediately selling portfolio securities. In
     order to secure any such bank borrowings under this section, the Fund may
     pledge, mortgage or hypothecate the Fund's assets and then in an amount not
     greater than 15% of the value of its total assets. The Fund will not borrow
     for leverage purposes and investment securities will not be purchased while
     any borrowings are outstanding. 

     (9) Make short sales of securities, purchase any securities on margin, or
     invest in warrants or commodities. 

     (10) Write, purchase or sell puts, calls, straddles or spreads, or
     combinations thereof. 

     (11) Purchase or retain the securities of any issuer if any officer or
     trustee of the Fund or its investment adviser owns beneficially more than
     1/2 of 1% of the securities of such issuer and if together such individuals
     own more than 5% of the securities of such issuer. 


                                           
<PAGE>


     (12) Invest for the purpose of exercising control or management of another
     issuer. 

     (13) Invest in real estate or real estate limited partnerships, although it
     may invest in securities which are secured by real estate or real estate
     mortgages and may invest in the securities of issuers which invest or deal
     in commodities, commodity futures, real estate or real estate mortgages. 

     (14) Invest in interests in oil, gas, or other mineral exploration or
     development programs, although it may invest in securities of issuers which
     invest in or sponsor such programs. 

     (15) Purchase the securities of other investment companies, except as they
     may be acquired as part of a merger, consolidation or acquisition of
     assets. 

     (16) Purchase the securities of companies which have a record of less than
     three years' continuous operation if, as a result, more than 5% of the
     value of the Fund's assets would be invested in securities of such issuer. 

     (17) Engage in arbitrage transactions. 

     Restrictions apply as of the time of the transaction entered into by a Fund
     without regard to later changes in the value of any portfolio security or
     the assets of the Fund. 


                            ADDITIONAL INFORMATION ABOUT
                   LENDING SECURITIES AND REPURCHASE AGREEMENTS 
                                          
Loans of Portfolio Securities 

   
Securities of a Fund may be lent to member firms of the New York Stock Exchange
and commercial banks with assets of one billion dollars or more. Any such loans
must be secured continuously in the form of cash or cash equivalents, such as
U.S. Treasury bills. The amount of the collateral must, on a current basis,
equal or exceed the market value of the loaned securities, and the loan must be
terminable upon notice, at any time. The Trust will exercise its right to
terminate a securities loan in order to preserve its right to vote upon matters
of importance affecting holders of the securities. A Fund may make a securities
loan if the value of the securities loaned from the Fund will not exceed 10% of
the Fund's assets. However, as a matter of non-fundamental policy, such loan is
not made if it would cause more than 5% of net assets of a Fund to be subject to
such loans.
    

The advantage of such loans would be that the Fund continues to receive the
equivalent of the interest earned or dividends paid by the issuer on the loaned
securities while at the same time earning interest on the cash or equivalent
collateral. 

Securities loans would be made to broker-dealers and other financial
institutions to facilitate their deliveries of such securities. As with any
extension of credit there may be risks of delay in recovery and possibly loss of
rights in the loaned securities should the borrower of the loaned securities
fail financially. However, loans will be made only to those firms that Ariel
Capital Management, Inc. (the "Adviser") deems creditworthy and only on such
terms as the Adviser believes should compensate for such risk. On termination of
the loan the borrower is obligated to return the securities to the Fund; any
gain or loss in the market value of the security during the loan period will
inure to the Fund. Custodial fees may be paid in connection with the loan. 


                                          2
<PAGE>

Repurchase Agreements 

A Fund may purchase securities subject to repurchase agreements. Repurchase
agreements are transactions in which a person purchases a security and
simultaneously commits to resell that security to the seller at a mutually
agreed upon time and price. The seller's obligation is secured by the underlying
security. The repurchase price reflects the initial purchase price plus an
agreed upon market rate of interest. While the underlying security may bear a
maturity in excess of one year, the term of the repurchase agreement is always
less than one year. Repurchase agreements not terminable within seven days will
be limited to no more than 5% of a Fund's assets. Repurchase agreements are
short-term money market investments, designed to generate current income. 

A Fund will only engage in repurchase agreements with recognized securities
dealers and banks determined to present minimal credit risk by the Adviser. 

A Fund will only engage in repurchase agreements reasonably designed to secure
fully, during the term of the agreement, the seller's obligation to repurchase
the underlying security and will monitor the market value of the underlying
security during the term of the agreement. If the value of the underlying
security declines and is not at least equal to the repurchase price due to the
Fund pursuant to the agreement, the Fund will require the seller to pledge
additional securities or cash to secure the seller's obligations pursuant to the
agreement. If the seller defaults on its obligation to repurchase and the value
of the underlying security declines, the Fund may incur a loss and may incur
expenses in selling the underlying security. 


                        DIVIDENDS, DISTRIBUTIONS AND TAXES 
                                          
Each Fund's dividends, if any, are declared and paid from net investment income
on an annual basis. Generally, net investment income consists of the interest
income earned (adjusted for amortization of original issue or market discounts
or premiums) and dividends declared and received on investments, less expenses.
Distributions of net capital gains, if any, are generally declared and paid by
each Fund annually; however, the Funds do not intend to make any such
distributions from net capital gains unless available capital loss carryovers,
if any, have been used or have expired.  

Generally, dividends (including short-term capital gains) and distributions are
taxable to the shareholder in the year they are paid. However, any dividends and
distributions paid in January but declared during the prior three months are
taxable in the year declared. 

The Trust is required to withhold 31% of any dividends (including long-term
capital gain dividends) paid and 31% of each redemption transaction, if: (a) the
shareholder's social security number or other taxpayer identification number
("TIN") is not provided or an obviously incorrect TIN is provided; (b) the
shareholder does not certify under penalties of perjury that the TIN provided is
the shareholder's correct TIN and that the shareholder is not subject to backup
withholding under section 3406(a)(1)(C) of the Internal Revenue Code because of
under reporting (however, failure to provide certification as to the application
of section 3406(a)(1)(C) will result only in backup withholding on dividends,
not on redemptions); or (c) the Fund is notified by the Internal Revenue Service
that the TIN provided by the shareholder is incorrect or that there has been
under reporting of interest or dividends by the shareholder. Affected
shareholders will receive statements at least annually specifying the amount
withheld. 

In addition, the Trust is required under the broker reporting provisions of the
Code to report to the Internal Revenue Service the following information with
respect to each redemption transaction: (a) the shareholder's name, address,
account number and taxpayer identification number; (b) the total dollar value of
the redemptions; and (c) each Fund's identifying CUSIP number. 


                                          3
<PAGE>



Certain shareholders are, however, exempt from the backup withholding and broker
reporting requirements. Exempt shareholders include: corporations; financial
institutions; tax-exempt organizations; individual retirement plans; the U.S., a
State, the District of Columbia, a U.S. possession, a foreign government, an
international organization, or any political subdivision, agency or
instrumentality of any of the foregoing; U.S. registered commodities or
securities dealers; real estate investment trusts; registered investment
companies; bank common trust funds; certain charitable trusts; foreign central
banks of issue. Non-resident aliens also are generally not subject to either
requirement but, along with certain foreign partnerships and foreign
corporations, may instead be subject to withholding under Section 1441 of the
Code. Shareholders claiming exemption from backup withholding and broker
reporting should call or write the Trust for further information. 

The Trust intends to operate each Fund to qualify as a "regulated investment
company" under Subchapter M of the Code. By so qualifying, a Fund will not be
subject to federal income taxes to the extent its earnings are distributed. The
Trust also intends to manage the Funds so they are not subject to the excise tax
imposed by the Tax Reform Act of 1986 (the "Act"). 


                            CALCULATION OF TOTAL RETURN 
                                          
A Fund's "total return" may be advertised from time to time. Total return for a
period is the percentage change in value during the period of an investment in
shares of a Fund, including all additional shares purchased within the period
with reinvested dividends and distributions. Average annual total return is the
average annual compounded rate of change in value represented by the total
return for the period. 

Average annual total return is computed according to the following formula: 

                                  P(1 + T)(n) = ERV 
                                          
where P = the amount of an assumed initial investment in shares of a Fund (less
the maximum sales charge, if any, during the period); T = average annual total
return; n = the number of years from initial investment to the end of the
period; and ERV = the ending redeemable value of shares held at the end of the
period. 

Average Annual total return for each of the Fund's shares for the periods
indicated are as follows: 

                     APPRECIATION FUND

   
Periods Ended September 30, 1997   Average Annual Total Return
One year                                    42.3%
Five Years                                  17.0%
From inception (December 1, 1989)           14.7%

GROWTH FUND Periods Ended September 30, 1997 Average Annual     Total Return
One year                                                           43.3%
Five years                                                         16.8%
From inception (November 6, 1986)                                  15.7%
    


                                          4
<PAGE>


Total return may be advertised for other periods, such as by quarter, or
cumulatively for more than one year.

Total return, like net asset value per share, fluctuates in response to changes
in market conditions. Performance for any particular time period is historical
in nature and is not intended and should not be considered to be an indication
of future return. 


                                  NET ASSET VALUE 

   
The net asset value per share of a Fund, the price at which the Fund's shares
are purchased and redeemed, is determined every business day as of the close of
the New York Stock Exchange (generally 3:00 p.m., Central time), and at such
other times as may be necessary or appropriate. The Funds do not determine net
asset value on certain national holidays or other days on which the New York
Stock Exchange is closed: New Year's Day, Martin Luther King Jr.'s Birthday,
Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and
Christmas Day. 
    


The net asset value per share is computed by dividing the value of a Fund's
total assets, less its liabilities, by the total number of shares outstanding.
The Funds' securities are valued as follows: (a) securities for which market
quotations are readily available are valued at the most recent closing price. 
All other securities for which reliable bid quotations are available are valued
at the mean between the bid and asked price, or yield equivalent as obtained
from one or more market makers for such securities; (b) securities maturing
within 60 days are valued at cost, plus or minus any amortized discount or
premium, unless the Board of Trustees determines such method not to be
appropriate under the circumstances; and (c) all other securities and assets for
which market quotations are not readily available are fairly valued by the
Adviser in good faith under the supervision of the Board of Trustees. 


                   INVESTMENT ADVISER AND SERVICES ADMINISTRATOR 
                                          
Ariel Capital Management, Inc. (the "Adviser"), 307 North Michigan Avenue, Suite
500, Chicago, Illinois 60601, which is controlled by John W. Rogers, Jr., acts
as investment adviser and services administrator under a management agreement
with the Trust ("Management Agreement"). 

The Management Agreement between the Trust and the Adviser will remain in effect
as to a Fund indefinitely, provided continuance is approved at least annually by
vote of the holders of a majority of the outstanding shares of the Fund or by
the Board of Trustees of the Trust; and further provided that such continuance
is also approved annually by the vote of a majority of the Trustees of the Trust
who are not parties to the Agreement or interested persons of parties to the
Agreement or interested persons of such parties, cast in person at a meeting
called for the purpose of voting on such approval. The Management Agreement may
be terminated without penalty by the Trust or the Adviser upon 60 days' prior
written notice; it automatically terminates in the event of its assignment. 

Pursuant to the Management Agreement, the Adviser is responsible for determining
the investment selections for a Fund in accordance with the Fund's investment
objectives and policies stated above, subject to the direction and control of
the Board of Trustees. The Adviser pays the salaries and fees of all officers
and Trustees who are affiliated persons of the Adviser. 


The Adviser also serves as the Funds' services administrator with the Trust.
Pursuant to the Management Agreement, the Adviser provides the Funds with office
space, administrative services, furnishes executive and other personnel to the
Funds and is responsible for providing or overseeing the Fund's day-to-day
management and administration.  


                                          5
<PAGE>

The Funds pay all operating expenses not expressly assumed by the Adviser,
including custodial and transfer agency fees, federal and state securities
registration fees, legal and audit fees, and brokerage commissions and other
costs associated with the purchase and sale of portfolio securities, except that
the Adviser must reimburse a Fund if its annual expenses (excluding brokerage,
taxes, interest, Distribution Plan expenses and extraordinary items) exceed
1.50% of the first $30 million of each Fund's average daily net assets and 1% of
such assets in excess of $30 million. 

   
Fees paid to the Adviser for the fiscal year ended September 30, 1995 under the
Management Agreement were $1,050,040 and $865,718, for the Appreciation Fund and
the Growth Fund, respectively.  The Adviser reimbursed the Appreciation Fund
$303,795 and the Growth Fund $33,526, for the same period.

Fees paid to the Adviser for the fiscal year ended September 30, 1996 were
$1,010,049 for the Appreciation Fund and $751,001 for the Growth Fund.  The
Adviser reimbursed the Appreciation Fund $47,713 for the same period.

Fees paid to the Adviser for the fiscal year ended September 30, 1997 were
$1,151,445 for the Appreciation Fund and $838,232 for the Growth Fund.  No
reimbursements were made by the Adviser for the fiscal year.

In connection with the exchange privilege with respect to Cash Trust Resource
Trust Money Market Fund, Cash Resource Trust U.S. Government Money Market Fund
and Cash Resource Trust Tax-Exempt Money Market Fund, the Distributor acts as a
shareholder servicing agent. For its services, the Distributor receives a fee
from each such fund at the rate of 0.25% of the average net assets of each
account in such funds established through the use of the exchange privilege
pursuant to a Rule 12b-1 distribution plan adopted by Cash Resource Trust Money
Market Fund, Cash Resource Trust U.S. Government Money Market Fund and Cash
Resource Trust Tax-Exempt Money Market Fund. 
    

The Adviser has adopted a Code of Ethics which regulates the personal securities
transactions of the Adviser's investment personnel and other employees and
affiliates with access to information regarding securities transactions of the
Fund. The Code of Ethics requires investment personnel to disclose all personal
securities holdings upon commencement of employment and all subsequent trading
activity to the Adviser's Compliance Officer. Investment personnel are
prohibited from engaging in any securities transactions, including the purchase
of securities in a private offering, without the prior consent of the Compliance
Officer. Additionally, such personnel are prohibited from purchasing securities
in an initial public offering and are prohibited from trading in any securities
(i) for which either Fund has a pending buy or sell order, (ii) which either
Fund is considering buying or selling, or (iii) which either Fund purchased or
sold within seven calendar days.

                                          6

<PAGE>


                              METHOD OF DISTRIBUTION 
                                          
Ariel Distributors, Inc., a wholly-owned subsidiary of the Adviser, is the
principal underwriter for the Funds under an agreement with the Trust. Pursuant
to the Underwriting Agreement, Ariel Distributors receives a fee at the annual
rate of 0.25% of each Fund's average daily net assets for its distribution
services and for assuming certain marketing expenses. Ariel Distributors is
located at 307 N. Michigan Avenue, Chicago, Illinois 60601. 

The Trust has also adopted a Distribution Plan pursuant to Rule 12b-1 under the
Investment Company Act of 1940 with respect to the Funds (the "Distribution
Plan"). Rule 12b-1 permits an investment company to finance, directly or
indirectly, any activity which is primarily intended to result in the sale of
its shares only if it does so in accordance with the provisions of such Rule.
The Distribution Plan authorizes the Trust to pay up to 0.30% annually of a
Fund's average daily net assets in connection with the distribution of the
Fund's shares. Consistent with the Underwriting Agreement, however, payments
under the Distribution Plan are currently limited by the Board of Trustees to
0.25% annually of such average daily net assets.

   
During the fiscal year ended September 30, 1997, the Appreciation Fund and
Growth Fund paid Distribution Plan expenses of $322,397  and $383,815,
respectively, to the principal underwriter.  Of the total amounts paid $237,073
was used to pay broker-dealers for their distribution and maintenance services
and $469,139 was used for advertising, shareholder account maintenance, printing
and related costs.
    

The Distribution Plan was approved by the Board of Trustees, including the
Trustees who are not "interested persons" of the Fund (as that term is defined
in the Investment Company Act of 1940) and who have no direct financial interest
in the operation of the Plan or in any agreements related to the Distribution
Plan (the "Independent Trustees"). The selection and nomination of the
Independent Trustees is committed to the discretion of such Independent
Trustees. In establishing the Distribution Plan, the Trustees considered various
factors including the amount of the distribution fee. The Trustees determined
that there is a reasonable likelihood that the Distribution Plan will benefit
the Trust and its shareholders. 

The Distribution Plan may be terminated as to a Fund by vote of a majority of
the Independent Trustees, or by vote of a majority of the outstanding shares of
the Fund. Any change in the Distribution Plan that would materially increase the
distribution cost to a Fund requires approval of the shareholders of that Fund;
otherwise, the Distribution Plan may be amended by the Trustees, including a
majority of the Independent Trustees. 

The Distribution Plan will continue in effect indefinitely, if not terminated in
accordance with its terms, provided that such continuance is annually approved
by (i) the vote of a majority of the Independent Trustees and (ii) the vote of a
majority of the entire Board of Trustees. 

Apart from the Distribution Plan, the Adviser, at its expense, may incur costs
and pay expenses associated with the distribution of shares of the Fund,
including compensation to broker-dealers in consideration of promotional or
administrative services. 

   
The Funds have authorized certain Qualified Dealers to accept on their behalf
purchase and redemption orders.  Such Dealers are authorized to designate other
intermediaries to accept purchase and redemption orders on the Funds' behalf. 
The Funds will be deemed to have received a purchase or redemption order when an
authorized Dealer or such Dealer's authorized designee, accepts the order. 
Customer orders will be priced at the applicable Fund's net asset value next
computed after they are accepted by an authorized Dealer or such Dealer's
designee.
    

                                          7

<PAGE>


                            TRANSFER AGENT AND CUSTODIAN
                                          
Investors Fiduciary Trust Company ("IFTC") has been retained by the Trust to act
as transfer agent, custodian, dividend disbursing agent and shareholder
servicing agent. These responsibilities include: responding to shareholder
inquiries and instructions concerning their accounts; crediting and debiting
shareholder accounts for purchases and redemptions of Fund shares and confirming
such transactions; updating of shareholder accounts to reflect declaration and
payment of dividends; keeping custody of all of the Funds' investments; and
preparing and distributing quarterly statements to shareholders regarding their
accounts. 


                               PORTFOLIO TRANSACTIONS
                                          
Portfolio transactions are undertaken on the basis of their desirability from an
investment standpoint. Investment decisions and choice of brokers and dealers
are made by the Adviser under the direction and supervision of the Trust's Board
of Trustees. 

The Trust seeks to obtain the best price and most favorable execution and
selects broker-dealers on the basis of their professional capability and the
value and quality of their services. Broker-dealers that provide the Trust with
statistical, research, or other information and services may be selected. Such
broker-dealers may receive compensation for executing portfolio transactions
that is in excess of the compensation another broker-dealer would have received
for executing such transactions, if the Adviser determines in good faith that
such compensation is reasonable in relation to the value of the information and
services provided. Research services furnished by investment firms may be
utilized by the Adviser in connection with its investment services for other
accounts; likewise, research services provided by investment firms used for
other accounts may be utilized by the Adviser in performing its services for the
Trust. Although any statistical, research, or other information or services
provided by broker-dealers may be useful to the Adviser, its dollar value is
generally indeterminable and its availability or receipt does not materially
reduce the Adviser's normal research activities or expenses. 

The Adviser may also execute Fund transactions with or through broker-dealers
who have sold shares of the Funds. However, such sales will not be a qualifying
or disqualifying factor in a broker-dealer's selection nor will the selection of
any broker-dealer be based on the volume of Fund shares sold. 


                                INDEPENDENT AUDITORS
                                          
The Funds' independent auditors, Ernst & Young LLP, 233 South Wacker Drive,
Chicago, IL 60606, audit and report on the Funds' annual financial statements,
review certain regulatory reports and the Funds' federal income tax returns, and
perform other professional accounting, auditing, tax and advisory services when
engaged to do so by the Funds. Shareholders will receive annual audited
financial statements and semi-annual unaudited financial statements. 


                                GENERAL INFORMATION
                                          
The Ariel Growth Fund and the Ariel Appreciation Fund are series of Ariel Growth
Fund (doing business as Ariel Investment Trust), an open-end, diversified
management investment company organized as a serial Massachusetts business trust
on April 1, 1986. The Declaration of Trust contains an express disclaimer of
shareholder liability for acts or obligations of the Trust. The shareholders of
a Massachusetts business trust might, however, under certain circumstances, be
held personally liable as partners for its obligations. The 



                                          8


<PAGE>

Declaration of Trust provides for indemnification and reimbursement of expenses
out of Trust assets for any shareholder held personally liable for obligations
of the Trust. The Declaration of Trust further provides that the Trust may
maintain appropriate insurance (for example, fidelity bonding and errors and
omissions insurance) for the protection of the Trust, its shareholders,
trustees, officers, employees and agents to cover possible tort and other
liabilities. Thus, the risk of a shareholder incurring financial loss on account
of shareholder liability is limited to circumstances in which both inadequate
insurance exists and the Trust itself is unable to meet its obligations. 

Each share of each series of the Trust represents an equal proportionate
interest in that series and is entitled to such dividends and distributions out
of the income belonging to such shares as declared by the Board. Upon any
liquidation of the Trust, shareholders are entitled to share pro rata in the net
assets belonging to that series available for distribution. 

The Prospectus and this Statement of Additional Information do not contain all
the information in the Funds' registration statement. The registration statement
is on file with the Securities and Exchange Commission and is available to the
public. 


                               TRUSTEES AND OFFICERS

Set forth below are the principal occupations of the Trustees and Officers
during the last five years:

   
MARIO L. BAEZA, ESQ., 47, Trustee. Mr. Baeza is Chairman and Chief Executive
Officer, Latin America Partners, L.L.C. (Venture Capital).  Formerly, he was
President of Wasserstein Perella International Limited, and Managing Director
and Chief Executive Officer, Americas Division, Wasserstein Perella & Co., Inc.
Address: 200 Park Avenue, New York, New York 10166. 

JAMES COMPTON, 59, Trustee.  Mr. Compton is president and Chief Executive
Officer of Chicago Urban League.  Address:  4510 S. Michigan Ave., Chicago, IL 
60653.

WILLIAM C. DIETRICH, CPA, 48, Trustee. Mr. Dietrich is Chief Financial Officer
for Streamline Mid-Atlantic, Inc. (computerized shopping service).  He formerly
served as Vice President and Chief Financial Officer for Shoppers Express, Inc. 
Address: 5110 Ridgefield Road, Bethesda, Maryland 20816. 

ROYCE N. FLIPPIN, JR.,  63, Trustee.  Mr. Flippin is President of Flippin
Associates.  Formerly, he was Director of Program Advancement at the
Massachusetts Institute of Technology and was the Director of Athletics,
Physical Education and Recreation at MIT.  Address: 51 Frost Avenue, East
Brunswick, New Jersey  08816.

JOHN G. GUFFEY, JR., 49, Trustee. Mr. Guffey is Chairman of the Calvert Social
Investment Foundation, organizing director of the Community Capital Bank in
Brooklyn, New York, and a financial consultant to various organizations. In
addition, he is the Treasurer and Director of Silby, Guffey and Co., Inc., a
venture capital firm. Mr. Guffey was formerly an officer and is a
trustee/director of each of the investment companies in the Calvert Group of
Funds, except for Acacia Capital Corporation. Address: 7205 Pomander Lane, Chevy
Chase, Maryland 20815. 

CHRISTOPHER G. KENNEDY, 34, Trustee. Mr. Kennedy is Executive Vice President and
a Director of Merchandise Mart Properties, Inc., a real estate management firm. 
Prior to 1991, he was a student at the J.L. Kellogg Graduate School of
Management at Northwestern University. Address: The Merchandise Mart, 200 World
Trade Center, Suite 470, Chicago, Illinois 60654.
    

                                          9

<PAGE>

   
BERT N. MITCHELL, CPA, 59, Chairman of the Board and Trustee. Mr. Mitchell is
the Chairman and Chief Executive Officer of Mitchell & Titus L.L.P., the
nation's largest minority-owned certified public accounting firm.  Address: One
Battery Park Plaza, New York, New York 10004. 

*MELLODY L. HOBSON, 28, Trustee. Ms. Hobson is Senior Vice President, Director
of Marketing of Ariel Capital Management. Address: 307 North Michigan Avenue,
Suite 500, Chicago, Illinois 60601. 

*ERIC T. MCKISSACK, 44, Trustee and President. Mr. McKissack is Vice Chairman
and Co-Chief Investment Officer of Ariel Capital Management. Formerly, Mr.
McKissack was a research analyst at First National Bank of Chicago. Address: 307
North Michigan Avenue, Suite 500, Chicago, Illinois 60601. 

*JAMES W. ATKINSON, 47, Vice President.  Mr. Atkinson is Vice President, Finance
and Management of Ariel Capital Management.  Formerly, he was Senior Vice
President and Chief Executive Officer of Stein  Roe & Farnham, Inc. (investment
advisers).  Address: 307 North Michigan Avenue, Suite 500, Chicago, Illinois
60601.

*ROGER P. SCHMITT, 40, Vice President, Secretary and Assistant Treasurer. Mr.
Schmitt is Chief Operating Officer of Ariel Capital Management.  Formerly, Mr.
Schmitt was Marketing Manager with IBM Corporation. Address: 307 North Michigan
Avenue, Suite 500, Chicago, Illinois 60601. 

*EDWARD SINGLETON, 46, Treasurer and Assistant Secretary. Mr. Singleton is Vice
President and Executive Assistant to the President of Ariel Capital Management. 
He also operates an accounting and tax consulting business. Formerly, Mr.
Singleton was Manager of Tax and Regulatory Compliance for American Drug Stores,
Inc., a subsidiary of American Stores Company. Address: 307 North Michigan
Avenue, Suite 500, Chicago, Illinois 60601. 
    
____________
*Officers and Trustees deemed to be "interested persons" of the Fund under the
Investment Company Act of 1940. 

                               COMPENSATION SCHEDULE

   
During the fiscal year ended September 30, 1997, compensation paid to the
Trustees of the Trust not affiliated with the Adviser was as follows: 
    

                                   Aggregate Fund         Total Fund
     Name                          Compensation       Complex Compensation*
   
Mario L. Baeza                     $5,967              $8,950    
James Compton**                    $3,200              $4,800
William C. Dietrich                $5,767              $8,650
Royce N. Flippin, Jr.              $5,967              $8,950
John G. Guffey, Jr.                $5,967              $8,950
Christopher G. Kennedy             $5,967              $8,950
Bert N. Mitchell                   $5,967              $8,950

*Complex compensation is the aggregate compensation paid, for services as a
Director, by all mutual funds with the same investment adviser.  The total
compensation includes amounts paid to the Trustees for their services to the
Bond Fund by the Adviser pursuant to an Administrative Services Agreement
between the Bond Fund and the Adviser.
    


                                          10
<PAGE>

   
**Mr. Compton became a Trustee on May 20, 1997.
    

                              SIGNIFICANT SHAREHOLDERS

   
     The following table lists the holders of more than five percent of the
outstanding shares of each Fund as of January 12, 1998:
    

                                    Growth Fund

Name and Address                   Number of Shares           Percentage of
of Owner                             Owned                  Outstanding Shares

   
Illinois State Employees                671,062.272               15%
Deferred Compensation
604 Stratton Office Building
Springfield, IL  62706
    

                                 Appreciation Fund

Name and Address                   Number of Shares           Percentage of
of Owner                             Owned                  Outstanding Shares

   
Great West Life & Annuity Co.    696,059.063           10%
8515 E. Orchard Road
Englewood, CO 80111

Charles Schwab & Co., Inc.        397,327.324                 6%
Reinvest Acct.
Attn:  Mutual Fund Dept.
181 Montgomery Street
San Francisco, CA  94104
    


                                          11

<PAGE>

 
                                     APPENDIX 
                                          


Corporate Bond and Commercial Paper Ratings 

The following is a description of Moody's Investors Service, Inc.'s bond
ratings: 

Aaa: Bonds which are rated Aaa are judged to be of the best quality.  They carry
the smallest degree of investment risk and are generally referred to as "gilt
edged."  Interest payments are protected by a large or by an exceptionally
stable margin and principal is secure.  While the various protective elements
are likely to change, such changes as can be visualized are unlikely to impair
the fundamentally strong position of such issues. 

Aa: Bonds which are rated Aa are judged to be of high quality by all standards. 
Together with the Aaa group, they comprise what are generally known as high
grade bonds.  They are rated lower than the best bonds because margins of
protection may not be as large as in Aaa securities or fluctuation of protective
elements may be of greater amplitude or there may be other elements present
which make long-term risks appear somewhat larger than Aaa securities. 

A: Bonds which are rated A possess many favorable investment attributes and are
to be considered as upper-medium-grade obligations.  Factors giving security to
principal and interest are considered adequate, but elements may be present
which suggest a susceptibility to impairment sometime in the future.

Baa: Bonds which are rated Baa are considered as medium grade obligations, i.e.
they are neither highly protected nor poorly secured.  Interest payments and
principal security appear adequate for the present but certain protective
elements may be lacking or may be characteristically unreliable over any great
length of time.  Such bonds lack outstanding investment characteristics and in
fact have speculative characteristics as well. 

The following is a description of Standard & Poor's Corporation's investment
grade bond ratings: 

AAA: Bonds rated AAA are considered highest grade obligations.  They possess the
ultimate degree of protection as to principal and interest.  They move with
market interest rates, and thus provide the maximum safety on all counts. 

AA: Bonds rated AA are high-grade obligations.  In the majority of instances,
they differ from AAA issues only to a small degree.  Prices of AA bonds also
move with the long-term money market. 

A: Bonds rated A are upper medium grade obligations.  They have considerable
investment strength, but are not entirely free from adverse effects of change in
economic and trade conditions.  Interest and principal are regarded as safe. 
They predominantly reflect money rates in their market behavior but, to some
extent, also economic conditions. 

BBB: Bonds rated BBB are medium grade obligations.  They are considered
borderline between definitely sound obligations and those where the speculative
element begins to predominate. These bonds have adequate asset coverage and are
normally protected by satisfactory earnings.  Their susceptibility to changing
conditions, particularly to depressions, necessitates constant monitoring. 
These bonds are more responsive to business and trade conditions than to
interest rates.  This group is the lowest that qualifies for commercial bank
investment. 


                                          12
<PAGE>


Commercial paper rated A by Standard & Poor's Corporation has the following
characteristics: liquidity ratios are adequate to meet cash requirements;
long-term senior debt is rated "A" or better; the issuer has access to at least
two adequate channels of borrowing; basic earnings and cash flow have an upward
trend with allowance made for unusual circumstances; typically, the issuer's
industry is well-established and the issuer has a strong position within the
industry; and the reliability and quality of management are unquestioned.  The
relative strength or weakness of the above factors determines whether an
issuer's commercial paper is rated A-1, A-2, or A-3. 

Issuers rated Prime-1 by Moody's Investors Services, Inc., are considered to
have superior capacity of repayment of short-term promissory obligations.  Such
repayment capacity will normally be evidenced by the following characteristics:
leading market positions in well-established industries; high rates of return on
funds employed; conservative capitalization structure with moderate reliance on
debt and ample asset protection; broad margins in earnings coverage of fixed
financial charges and high internal cash generation; and well-established access
to a range of financial markets and assured sources of alternate liquidity. 
Issuers rated Prime-2 have a strong capacity for repayment of short-term
promissory obligations.  This will normally be evidenced by many of the
characteristics cited above but to a lesser degree.  Earnings trends and
coverage ratios, while sound, will be more subject to variation.  Capitalization
characteristics, while still appropriate, may be more affected by external
conditions.  Ample alternate liquidity is maintained. 


                                          13
<PAGE>





                               ARIEL INVESTMENT TRUST
                        STATEMENT OF ADDITIONAL INFORMATION
   
                                  February 1, 1998
    

                            For Ariel Premier Bond Fund
                             307 North Michigan Avenue
                                     Suite 500
                              Chicago, Illinois 60601
                          1-800-29-ARIEL (1-800-292-7435)


Ariel Premier Bond Fund (the "Fund") is a series of Ariel Growth Fund, doing
business as Ariel Investment Trust (the "Trust").

   
The Trust's audited financial statements included in the Annual Report to 
Shareholders for the Fund dated September 30, 1997 are expressly incorporated 
herein by reference and made a part of this Statement of Additional 
Information. Copies of the Annual Report may be obtained free of charge by 
writing or calling Fund.

This Statement of Additional Information is not a prospectus but provides 
information that should be read in conjunction with the Fund's Prospectus 
dated February 1, 1998 and any supplement thereto, which may be obtained free 
of charge by writing or calling the Fund. 

    
 

<PAGE>

                                  TABLE OF CONTENTS

   
FUNDAMENTAL INVESTMENT RESTRICTIONS  . . . . . . . . . . . . . . . . . .1

NON-FUNDAMENTAL INVESTMENT RESTRICTIONS. . . . . . . . . . . . . . . . .2

ADDITIONAL INFORMATION ABOUT INVESTMENT TECHNIQUES . . . . . . . . . . .2

IN-KIND PURCHASES OF INSTITUTIONAL CLASS SHARES OF THE FUND. . . . . . .7

INVESTMENT ADVISER, SUB-ADVISER AND SERVICES ADMINISTRATOR . . . . . . .8

METHOD OF DISTRIBUTION OF THE INVESTOR CLASS SHARES. . . . . . . . . . .8

TRANSFER AGENT AND CUSTODIAN . . . . . . . . . . . . . . . . . . . . . .9

PORTFOLIO TRANSACTIONS . . . . . . . . . . . . . . . . . . . . . . . . .9

INDEPENDENT AUDITORS . . . . . . . . . . . . . . . . . . . . . . . . . 10

GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . 10

TRUSTEES AND OFFICERS. . . . . . . . . . . . . . . . . . . . . . . . . 10

COMPENSATION SCHEDULE. . . . . . . . . . . . . . . . . . . . . . . . . 11

SIGNIFICANT SHAREHOLDERS . . . . . . . . . . . . . . . . . . . . . . . 12

CALCULATION OF PERFORMANCE DATA. . . . . . . . . . . . . . . . . . . . 13

APPENDIX A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

    

<PAGE>

                         FUNDAMENTAL INVESTMENT RESTRICTIONS 

The investment restrictions set forth below and the Fund's investment objective
are fundamental policies and may not be changed without the approval of the
holders of a majority of the outstanding shares of the Fund. As defined in the
Investment Company Act of 1940, this means the lesser of the vote of (a) 67% of
the shares of the Fund at a meeting where more than 50% of the outstanding
shares are present in person or by proxy, or (b) more than 50% of the
outstanding shares of the Fund. 

     (1)  Commodities.  The Fund may not purchase or sell commodities or
commodity contracts except contracts in respect to financial futures.

     (2)  Real Estate.  The Fund may not purchase real estate or real estate
mortgages, but may purchase securities backed by real estate or interests
therein (including mortgage interests) and securities of companies, including
real estate investment trusts, holding real estate or interests (including
mortgage interests) therein.  (This does not prevent the Fund from owning and
liquidating real estate or real estate interests incident to a default on
portfolio securities.)

     (3)  Diversification of Fund Investments.

          (a)  Fund Assets.  With respect to 75% of the value of its total
     assets, the Fund may not buy the securities of any issuer if more than 5%
     of the value of the Fund's total assets would then be invested in that
     issuer.  Securities issued or guaranteed by the U.S. government or its
     agencies or instrumentalities and repurchase agreements involving such
     securities ("U.S. Government Securities") are not subject to this
     limitation.

          (b)  Securities of Issuers.  With respect to 75% of the value of its
     total assets, the Fund may not purchase the securities of any issuer if
     after such purchase the Fund would then own more than 10% of such issuer's
     voting securities.  U.S. Government Securities are not subject to this
     limitation.

     (4)  Industry Concentration.  The Fund may not purchase the securities of
companies in any one industry if 25% or more of the value of the Fund's total
assets would then be invested in companies having their principal business
activity in the same industry.  U.S. Government Securities are not subject to
this limitation.

     (5)  Senior Securities; Borrowing.  The Fund may not issue senior
securities except as permitted under the Investment Company Act of 1940.  The
Fund may not pledge or hypothecate any of its assets, except in connection with
permitted borrowing.

     (6)  Underwriting.  The Fund does not engage in the underwriting of
securities.  (This does not preclude it from selling restricted securities in
its portfolio.)

     (7)  Lending Money or Securities.  The Fund may not lend money, except that
it may purchase and hold debt securities publicly distributed or traded or
privately placed and may enter into repurchase agreements.  The Fund will not
lend securities if such a loan would cause more than one-third of the Fund's net
assets to then be subject to such loans.

     (8)  Officer and Trustees.  The Fund may not purchase from or sell to any
of the Trust's officers or trustees, or firms of which any of them are members,
any securities (other than capital stock of the Fund), but such persons or firms
may act as brokers for the Fund for customary commissions. 
 
<PAGE>

                    NON-FUNDAMENTAL INVESTMENT RESTRICTIONS

These policies may be changed by the Board of Trustees without shareholder
approval.


     (1)  Margin.  The Fund may not purchase any securities on margin, except
that the Fund may (a) obtain such short-term credit as may be necessary for the
clearance of purchases and sales of portfolio securities; or (b) make margin
deposits in connection with transactions in futures and forward contracts. 

     (2)  Borrowing.  The Fund may not borrow money except from banks for
temporary or emergency purposes in an amount not exceeding 33-1/3% of the value
of its total assets (including amounts borrowed).  The Fund may not purchase
securities when money borrowed exceeds 5% of its total assets.

     (3)  Futures.  The Fund may not purchase a futures contract, except in
respect to interest rates and then only if, with respect to positions which do
not represent bona fide hedging, the aggregate initial margin for  such
positions would not exceed 5% of the Fund's total assets. 

     (4)  Illiquid Securities.  The Fund may not purchase illiquid securities
(including restricted securities which are illiquid and repurchase agreements
maturing in more than seven days) if, as a result, more than 15% of its net
assets would be invested in such securities.

     (5)  Ownership of Portfolio Securities by Officers and Directors.  The Fund
may not purchase or retain the securities of any issuer if any officer or
trustee of the Fund or its investment adviser owns beneficially more than 1/2 of
1% of the securities of such issuer and if together such individuals own more
than 5% of the securities of such issuer. 

     (6)  Lending Portfolio Securities.  The Fund may not loan portfolio
securities.

     (7)  Oil and Gas Programs.  The Fund may not invest in interests in oil,
gas, or other mineral exploration or development programs, although it may
invest in securities of issuers which invest in or sponsor such programs. 

     (8)  Investment Companies.  The Fund may not purchase the securities of
other investment companies, except as they may be acquired as part of a merger,
consolidation or acquisition of assets. 

     (9)  Unseasoned Issuers.  The Fund may not purchase the securities of
companies which, together with its predecessors, have a record of less than
three years' continuous operation if, as a result, more than 5% of the value of
its assets would be invested in securities of such companies.  U.S. Government
Securities and issuers of asset-backed securities are not subject to this
limitation.  


                            ADDITIONAL INFORMATION ABOUT
                               INVESTMENT TECHNIQUES 
                                          
Loans of Portfolio Securities 

     The fundamental investment restrictions provide that the Fund may make
secured loans of portfolio securities in order to realize additional income,
provided that the Fund will not lend securities if such a loan would cause more
than one-third of the total value of its net assets to then be subject to such
loans.  However, as a matter of non-fundamental policy, the Fund does not
currently intend to make such loans.  This policy may be changed by the Board of
Trustees should they determine that such loans would benefit the Fund.


                                     2

<PAGE>

Repurchase Agreements

     The Fund may purchase securities subject to repurchase agreements which are
transactions in which the Fund purchases a security and simultaneously commits
to resell that security to the seller at a mutually agreed upon time and price.
The seller's obligation is secured by the underlying security. The repurchase
price reflects the initial purchase price plus an agreed upon market rate of
interest. While the underlying security may bear a maturity in excess of one
year, the term of the repurchase agreement is always less than one year. 

     The Fund will engage in repurchase agreements with recognized securities
dealers and banks determined to present minimal credit risk by the Sub-Adviser.
In addition, the Fund will engage in repurchase agreements reasonably designed
to fully secure the seller's obligation, during the term of the agreement, to
repurchase the underlying security and the Fund will monitor the market value of
the underlying security during the term of the agreement. If the value of the
underlying security declines and is not at least equal to the repurchase price
due to the Fund pursuant to the agreement, the Fund will require the seller to
pledge additional securities or cash to secure the seller's obligations pursuant
to the agreement. If the seller defaults on its obligation to repurchase and the
value of the underlying security declines, the Fund may incur a loss and may
incur expenses in selling the underlying security.

Mortgage Dollar Rolls

   
     The Fund may enter into "mortgage dollar rolls," which are transactions in
which the Fund sells a mortgage-related security (such as a GNMA security) to a
dealer and simultaneously agrees to repurchase a similar security (but not the
same security) in the future at a pre-determined price.  A "dollar roll" can be
viewed as a collateralized borrowing in which the Fund pledges a
mortgage-related security to a dealer to obtain cash.  The dealer with which the
Fund enters into a dollar roll transaction is not obliged to return the same
securities as those originally sold by the Fund, but only securities which are
"substantially identical."  To be considered "substantially identical," the
securities returned to the Fund generally must: (1) be collateralized by the
same types of underlying mortgages; (2) be issued by the same agency and be part
of the same program; (3) have a similar original stated maturity; (4) have
identical net coupon rates; (5) have similar market yields (and therefore
price); and (6) satisfy "good delivery" requirements, meaning that the aggregate
principal amounts of the securities delivered and received back must be within
2.5% of the initial amount delivered.
    

     The Fund's obligations under a dollar roll agreement must be covered by
cash or high quality debt securities equal in value to the securities subject to
repurchase by the Fund, maintained in a segregated account.  To the extent that
the Fund collateralizes its obligations under a dollar roll agreement, the asset
coverage requirements of the Investment Company Act of 1940, described below,
will not apply to such transactions.  

     The Fund may be released from its obligations under a dollar roll agreement
by selling its position to another party at any time prior to the settlement
date.  The Fund may realize a gain or loss on such a sale.  If the Fund realizes
a gain, it will not be able to collect its profit until the original settlement
date of the agreement.  Because dollar roll transactions may be for terms
ranging between one and six months, the amount of any such gain may be deemed
"illiquid" and subject to the Fund's overall limitations on investments in
illiquid securities.

     The Investment Company Act of 1940 requires the Fund to maintain continuous
asset coverage (total assets including borrowings, less liabilities exclusive of
borrowings) of 300% of the amount borrowed.  If the 300% asset coverage should
decline as a result of market fluctuations or other reasons, the Fund may be
required to sell some of its portfolio holdings within three days to reduce the
debt and restore the 300% asset coverage, even though it may be disadvantageous
from an investment standpoint to sell securities at that time.  


                                     3

<PAGE>

Mortgage-Related and Other Asset-Backed Securities

     Mortgage-related securities (often referred to as "mortgage-backed"
securities) are interests in pools of residential or commercial mortgage loans,
including mortgage loans made by savings and loan institutions, mortgage
bankers, commercial banks and others.  Pools of mortgage loans are assembled as
securities for sale to investors by various governmental, government-related and
private organizations .  The Fund may also invest in debt securities which are
secured with collateral consisting of mortgage-related securities, and other
types of mortgage-related securities.

     Mortgage Pass-Through Securities.  Interests in pools of mortgage-related
securities differ from other forms of debt securities, which normally provide
for periodic payment of interest in fixed amounts with principal payments at
maturity or specified call dates.  Instead, these securities provide a monthly
payment which consists of both interest and principal payments.  In effect,
these payments are a "pass-through" of the monthly payments made by the
individual borrowers on their residential or commercial mortgage loans, net of
any fees paid to the issuer or guarantor of such securities.  Additional
payments are caused by repayments of principal resulting from the sale of the
underlying property, refinancing or foreclosure, net of fees or costs which may
be incurred.  Some mortgage-related securities (such as securities issued by the
Government National Mortgage Association ("GNMA")) are described as "modified
pass-through."  These securities entitle the holder to receive all interest and
principal payments owed on the mortgage pool, net of certain fees, at the
scheduled payment dates regardless of whether or not the mortgagor actually
makes the payment.  

     The principal governmental guarantor of mortgage-related securities is
GNMA.  GNMA is a wholly owned United States Government corporation within the
Department of Housing and Urban Development.  GNMA is authorized to guarantee,
with the full faith and credit of the United States Government, the timely
payment of principal and interest on securities issued by institutions approved
by GNMA (such as savings and loan institutions, commercial banks and mortgage
bankers) backed by pools of FHA-insured or VA-guaranteed mortgages.

     Government-related guarantors (i.e., not backed by the full faith and
credit of the United States Government) include the Federal National Mortgage
Association ("FNMA") and the Federal Home Loan Mortgage Corporation ("FHLMC"). 
FNMA is a government-sponsored corporation owned entirely by private
stockholders.  It is subject to general regulation by the Secretary of Housing
and Urban Development.  FNMA purchases conventional (i.e., not insured or
guaranteed by any government agency) residential mortgages from a list of
approved seller/servicers which include state and federally chartered savings
and loan associations, mutual savings banks, commercial banks and credit unions
and mortgage bankers.  Pass-through securities issued by FNMA are guaranteed as
to timely payment of principal and interest by FNMA but are not backed by the
full faith and credit of the United States Government.

     FHLMC was created by Congress in 1970 for the purpose of increasing the
availability of mortgage credit for residential housing.  It is a
government-sponsored corporation formerly owned by the twelve Federal Home Loan
Banks and now owned entirely by private stockholders.  FHLMC issues
Participation Certificates ("PCs") which represent interests in conventional
mortgages from FHLMC's national portfolio.  FHLMC guarantees the timely payment
of interest and ultimate collection of principal, but PCs are not backed by the
full faith and credit of the United States Government.  

     Commercial banks, savings and loan institutions, private mortgage insurance
companies, mortgage bankers and other secondary market issuers also create
pass-through pools of conventional residential mortgage loans.  Such issuers
may, in addition, be the originators and/or servicers of the underlying mortgage
loans as well as the guarantors of the mortgage-related securities.  Pools
created by such non-governmental issuers generally offer a higher rate of
interest than government and government-related pools because there are not
direct or indirect government or agency guarantees of payments in the former
pools.  However, timely payment of interest and principal of these pools may be
supported by various forms of insurance or guarantees, including individual
loan, title, pool and hazard insurance and letters of credit.  The insurance and
guarantees are issued by governmental entities, private insurers and the
mortgage poolers.  Such insurance and guarantees and the creditworthiness of the
issuers thereof will be considered in determining whether a mortgage-related
security meets the Fund's investment quality standards.  There can be no
assurance that the private 


                                   4

<PAGE>

insurers or guarantors can meet their obligations under the insurance policies
or guarantee arrangements.  The Fund currently does not intend to purchase
pass-through securities that are not issued or guaranteed by an agency or
instrumentality of the U.S. Government.

     Mortgage-backed securities that are issued or guaranteed by the U.S.
Government, its agencies or instrumentalities, are not subject to the Fund's
industry concentration restrictions, set forth under "Fundamental Investment
Restrictions," by virtue of the exclusion from that test available to all U.S.
Government Securities.  In case of privately issued mortgage-related securities,
the Fund takes the position that mortgage-related securities do not represent
interests in any particular "industry" or group of industries.  The assets
underlying such securities may be represented by a portfolio of first lien
residential mortgages (including both whole mortgage loans and mortgage
participation interests) or portfolios of mortgage pass-through securities
issued or guaranteed by GNMA, FNMA or FHLMC.  Mortgage loans underlying a
mortgage-related security may in turn be insured or guaranteed by the Federal
Housing Administration or the Department of Veterans Affairs.

     Collateralized Mortgage Obligations (CMOs).  A CMO is a hybrid between a
mortgage-backed bond and a mortgage pass-through security.  Similar to a bond,
interest and prepaid principal are paid, in most cases, semiannually.  CMOs may
be collateralized by whole mortgage loans, but are more typically collateralized
by portfolios of mortgage pass-through securities guaranteed by GNMA, FHLMC, or
FNMA, and their income streams.

   
     CMOs are structured into multiple classes called tranches, each bearing a
different stated maturity.  Actual maturity and average life will depend upon
the prepayment experience of the collateral.  CMOs can provide for a modified
form of call protection through a de facto breakdown of the underlying pool of
mortgages according to how quickly the loans are repaid.  Monthly payment of
principal received from the pool of underlying mortgages, including prepayments,
is first returned to investors holding the shortest maturity tranche.  Investors
holding the longer maturity tranches receive principal only after the first
tranche has been retired.  An investor is partially guarded against a sooner
than desired return of principal because of the sequential payments.
    

     In a typical CMO transaction, a corporation ("issuer") issues multiple
series (e.g., A, B, C, Z) of CMO bonds ("Bonds").  Proceeds of the Bond offering
are used to purchase mortgages or mortgage pass-through certificates
("Collateral").  The Collateral is pledged to a third party trustee as security
for the Bonds.  Principal and interest payments from the Collateral are used to
pay principal on the Bonds in the order A, B, C, Z.  The Series A, B and C Bonds
all bear current interest.  Interest on the Series Z Bond is accrued and added
to principal and a like amount is paid as principal on the Series A, B or C Bond
currently being paid off.  When the Series A, B and C Bonds are paid in full,
interest and principal on the Series Z Bond begins to be paid currently.  With
some CMOs, the issuer serves as a conduit to allow loan originators (primarily
builders or savings and loan associations) to borrow against their loan
portfolios.  The Fund's investments are limited to Planned Amortization Class
and sequential issues.

   
     FHLMC Collateralized Mortgage Obligations.  FHLMC CMOs are debt obligations
of FHLMC issued in multiple tranches having different maturity dates which are
secured by the pledge of a pool of conventional mortgage loans purchased by
FHLMC.  Unlike FHLMC Participation Certificates, payments of principal and
interest on the CMOs are made semiannually, as opposed to monthly.  The amount
of principal payable on each semiannual payment date is determined in accordance
with FHLMC's mandatory sinking fund schedule, which, in turn, is equal to
approximately 100% of FHA prepayment experience applied to the mortgage
collateral pool.  All sinking fund payments in the CMOs are allocated to the
retirement of the individual tranches of bonds in the order of their stated
maturities.  Payment of principal on the mortgage loans in the collateral pool
in excess of the amount of FHLMC's minimum sinking fund obligation for any
payment date are paid to the holders of the CMOs as additional sinking fund
payments.  This "pass-through" of prepayments has the effect of retiring most
CMO tranches prior to their stated final maturity.
    

     If collection of principal (including prepayments) on the mortgage loans
during any semiannual payment period is not sufficient to meet FHLMC's minimum
sinking fund obligation on the next sinking fund payment date, FHLMC agrees to
make up the deficiency from its general funds.


                                      5

<PAGE>

     Criteria for the mortgage loans in the pool backing the FHLMC CMOs are
identical to those of FHLMC PCs.  FHLMC has the right to substitute collateral
in the event of delinquencies and/or defaults.

     Other Mortgage-Related Securities.  Other mortgage-related securities
include securities other than those described above that directly or indirectly
represent a participation in, or are secured by and payable from, mortgage loans
on real property, including stripped mortgage-backed securities.  Other
mortgage-related securities may be equity or debt securities issued by agencies
or instrumentalities of the U.S. Government or by private originators of, or
investors in, mortgage loans, including savings and loan associations,
homebuilders, mortgage banks, commercial banks, investment banks, partnerships,
trusts and special purpose entities of the foregoing.

Other Asset-Backed Securities

     The Fund may invest in securities that are backed by a diversified pool of
assets other than mortgages such as trade, credit card and automobile
receivables.  Asset-backed securities are generally issued by special purpose
entities in the form of debt instruments.  The characteristics and risks of
automobile and credit card receivables are described below.

   
     Automobile Receivable Securities.  The Fund may invest in asset-backed
securities which are backed by receivables from motor vehicle installment sales
contracts or installment loans secured by motor vehicles ("Automobile Receivable
Securities").  Since installment sales contracts for motor vehicles or
installment loans related to such contracts ("Automobile Contracts") typically
have shorter durations and lower incidences of prepayment, Automobile Receivable
Securities generally will exhibit a shorter average life and are less
susceptible to prepayment risk than mortgage-related securities. 
    

     Most entities that issue Automobile Receivable Securities create an 
enforceable interest in their respective Automobile Contracts only by filing 
a financing statement and by having the servicer of the Automobile Contracts, 
which is usually the originator of the Automobile Contracts, take custody of 
the Automobile Contract.  In such circumstances, if the servicer of the 
Automobile Contracts were to sell the Automobile Contracts to another party, 
in violation of its obligation not to do so, there is a risk that such party 
could acquire an interest in the Automobile Contracts superior to that of the 
holders of Automobile Receivable Securities.  Also, although most Automobile 
Contracts grant a security interest in a motor vehicle being financed, in 
most states the security interest in a motor vehicle must be noted on the 
certificate of title to create an enforceable security interest against 
competing claims of other parties.  Due to the large number of vehicles 
involved, however, the certificate of title to each vehicle financed, 
pursuant to the Automobile Contracts underlying the Automobile Receivable 
Security, is usually not amended to reflect the assignment of the seller's 
security interest for the benefit of the holders of the Automobile Receivable 
Securities.  Therefore, there is the possibility that recoveries on 
repossessed collateral may not, in some cases, be available to support 
payments on the securities.  In addition, various state and federal 
securities laws give the motor vehicle owner the right to assert against the 
holder of the owner's Automobile Contract certain defenses such owner would 
have against the seller of the motor vehicle.  The assertion of such defenses 
could reduce payments on the Automobile Receivable Securities.  Investment 
grade Automobile Receivable Securities are typically over-collateralized and 
have other forms of credit enhancement to mitigate these risks.

     Credit Card Receivable Securities.  The Fund may invest in asset-backed
securities backed by a diversified pool of receivables from revolving credit
card agreements ("Credit Card Receivable Securities").  Credit balances on
revolving credit card agreements ("Accounts") are generally paid down more
rapidly than are Automobile Contracts.  Most Credit Card Receivable Securities
provide for a fixed period during which only interest payments are paid to the
security holder.  Principal payments received on underlying Accounts are used to
purchase additional assets.  The initial fixed period usually may be shortened
upon the occurrence of specified events which signal a potential deterioration
in the quality of the assets backing the security, such as the imposition of a
cap on interest rates.  The ability of the issuer to make principal and interest
payments on Credit Card Receivable Securities thus depends upon the continued
generation of additional principal amounts in the underlying accounts during the
initial period and the non-occurrence of specified events.  An acceleration in
cardholders' payments rates or any other event which shortens the period during
which additional credit card charges on an Account may be transferred to the
pool of assets supporting the related Credit 


                                     6

<PAGE>

Card Receivable Security could shorten the weighted average life and reduce the
yield of the Credit Card Receivable Security.

     Credit cardholders are entitled to the protection of a number of state and
federal consumer credit laws, many of which give such holder the right to set
off certain amounts against balances owed on the credit card, thereby reducing
amounts paid on Accounts.  In addition, unlike most other asset backed
securities, Accounts are unsecured obligations of the cardholder.


            IN-KIND PURCHASES OF INSTITUTIONAL CLASS SHARES OF THE FUND

     Shares of the Fund are continuously offered at their net asset value next
determined after an order is accepted.  The methods available for purchasing
shares of the Fund are described in the Prospectus.  In addition, Institutional
Class shares of the Fund may be purchased using securities, so long as the
securities delivered to the Fund meet the investment objective and policies of
the Fund, including its investment restrictions, and are otherwise acceptable to
the Sub-Adviser, which reserves the right to reject all or any part of the
securities offered in exchange for shares of the Fund.  Among other things, the
Sub-Adviser will consider the following criteria in determining whether to
accept securities for "in-kind" purchase of Fund shares.

     (1)  The securities offered by the investor in exchange for shares of the
Fund must be readily marketable and must not be in any way restricted as to
resale or otherwise be illiquid.

     (2)  The securities must have a value which is readily ascertainable in
accordance with the procedures used by the Fund to value its portfolio
securities.

     The Fund believes that this ability to purchase Institutional Class shares
of the Fund using securities provides a means by which holders of certain
securities may obtain diversification and continuous professional management of
their investments without the expense of selling those securities in the public
market.  Benefits to the Fund may include the ability to acquire desirable
securities at a lower transaction cost.

     An investor who wishes to make an "in-kind" purchase must furnish in
writing to the Fund a list with a full and exact description of all of the
securities which the investor proposes to deliver.  The Fund will advise the
investor as to those securities which it is prepared to accept and will provide
the investor with the necessary forms to be completed and signed by the
investor.  The investor should then send the securities, in the proper form for
transfer, with the necessary forms to the Fund and certify that there are no
legal or contractual restrictions on the free transfer and sale of the
securities.  The securities will be valued as of the close of business on the
day of receipt by the Fund in the same manner as portfolio securities of the
Fund are valued.  (See the section entitled "Net Asset Value" in the
Prospectus.)  The number of shares of the Fund, having a net asset value as of
the close of business on the day of receipt equal to the value of the securities
delivered by the investor, will be issued to the investor.

     The exchange of securities by the investor pursuant to this offer will
constitute a taxable transaction and may result in a gain or loss to the
investor for Federal income tax purposes.  Each investor should consult a tax
adviser to determine the tax consequences under Federal and state law of making
such an "in-kind" purchase.  



                                        7
 
<PAGE>

          INVESTMENT ADVISER, SUB-ADVISER AND SERVICES ADMINISTRATOR

     Ariel Capital Management, Inc. (the "Adviser"), 307 North Michigan Avenue,
Suite 500, Chicago, Illinois 60601, which is controlled by John W. Rogers, Jr.,
acts as investment adviser under an Investment Advisory Agreement and also acts
as the Administrator under an Administrative Services Agreement with the Trust.

     Both the Investment Advisory Agreement and the Administrative Services
Agreement between the Trust and the Adviser will remain in effect as to the Fund
indefinitely, provided continuance is approved at least annually by vote of the
Board of Trustees of the Trust or by the holders of a majority of the
outstanding shares of the Fund; and further provided that such continuance is
also approved annually by the vote of a majority of the Trustees of the Trust
who are not parties to either Agreement or interested persons of parties to such
agreement or interested persons of such parties, cast in person at a meeting
called for the purpose of voting on such approval. The Agreements may be
terminated without penalty by the Trust or the Adviser upon 60 days' prior
written notice; automatically terminates in the event of its assignment. 

     Under the Investment Advisory Agreement, the Adviser performs or supervises
the investment and reinvestment of the assets of the Fund and is responsible for
certain management services that are necessary or desirable to the operation of
the Fund.  The Adviser may delegate its investment management responsibilities
to a sub-adviser selected by the Adviser and approved in accordance with the
Investment Company Act of 1940.  The management services provided by the Adviser
consist of maintaining the Fund's organizational existence, providing office
space and personnel, preparing, filing and distributing notices, proxy
materials, reports to regulatory bodies, and reports to shareholders of the
Fund, maintaining portfolio and general accounting records; and other incidental
management services as are necessary to the conduct of the Fund's affairs except
such notices, materials, reports, records and services as are to be provided
under the Administrative Services Agreement.

   
     The Adviser also performs services under the Administrative Services
Agreement as described in the Prospectus.  Fees paid to the Adviser for the
fiscal years ended September 30, 1996 and 1997 were $24,444 and $241,717,
respectively, under the Advisory Agreement and $7,396 and $69,210, respectively,
under the Administrative Services Agreement.
    

     Lincoln Capital Management Company (the "Sub-Adviser"), 200 South Wacker
Drive, Chicago, IL  60606, acts as the Sub-Adviser of the Fund.  Under a
Sub-Advisory agreement with the Adviser, the Sub-Adviser manages the day-to-day
investment operations for the Fund.  The Fund pays no fees directly to the
Sub-Adviser.  

     The Adviser and Sub-Adviser have adopted Codes of Ethics which regulate the
personal securities transactions of the Adviser's and the Sub-Adviser's
investment personnel and other employees and affiliates with access to
information regarding securities transactions of the Fund. Both Codes of Ethics
require investment personnel to disclose all personal securities holdings upon
commencement of employment and all subsequent trading activity to the firm's
Compliance Officer. Investment personnel are prohibited from engaging in any
securities transactions, including the purchase of securities in a private
offering, without the prior consent of the Compliance Officer. Additionally,
such personnel are prohibited from purchasing securities in an initial public
offering and are prohibited from trading in any securities (i) for which the
Fund has a pending buy or sell order, (ii) which the Fund is considering buying
or selling, or (iii) which the Fund purchased or sold within seven calendar
days. 

   
                METHOD OF DISTRIBUTION OF THE INVESTOR CLASS SHARES

     The Trust has entered into an agreement with Ariel Distributors, Inc.
("Ariel Distributors"), a wholly-owned subsidiary of the Adviser, whereby Ariel
Distributors serves as the principal underwriter to distribute the Fund's shares
on a no-load basis. 
    


                                     8

<PAGE>

     The Trust has also adopted a Distribution Plan pursuant to Rule 12b-1 
under the Investment Company Act of 1940 with respect to the Investor Class 
(the "Distribution Plan").  Rule 12b-1 permits an investment company to 
finance, directly or indirectly, any activity which is primarily intended to 
result in the sale of its shares only if it does so in accordance with the 
provisions of such Rule.  The Distribution Plan authorizes the Trust to pay 
up to 0.30% annually of the average daily net assets of the Investor Class in 
connection with the distribution of the Investor Class shares.  Consistent 
with the Underwriting Agreement, however, payments under the Distribution 
Plan are currently limited by the Board of Trustees to 0.25% annually of such 
average daily net asset value.  

     The Distribution Plan was approved by the Board of Trustees, including the
Trustees who are not "interested persons" of the Fund (as that term is defined
in the Investment Company Act of 1940) and who have no direct financial interest
in the operation of the Plan or in any agreements related to the Distribution
Plan (the "Independent Trustees").  The selection and nomination of the
Independent Trustees is committed to the discretion of such Independent
Trustees.  In establishing the Distribution Plan, the Trustees considered
various factors including the amount of the distribution fee.  The Trustees
determined that there is a reasonable likelihood that the Distribution Plan will
benefit the Trust and its shareholders.  

     The Distribution Plan may be terminated as to the Investor Class by vote of
a majority of Independent Trustees, or by vote of a majority of the outstanding
Investor Class shares.  Any change in the Distribution Plan that would
materially increase the distribution cost to the class requires approval of the
shareholders of that class; otherwise, the Distribution Plan may be amended by
the Trustees, including a majority of the Independent Trustees.  

     The Distribution Plan will continue in effect indefinitely, if not
terminated in accordance with its terms, provided that such continuance is
annually approved by (i) the vote of a majority of Independent Trustees, and
(ii) the vote of a majority of the entire Board of Trustees.  

     Apart from the Distribution Plan, the Adviser, at its expense, may incur
costs and pay expenses associated with the distribution of shares of the Fund,
including compensation to broker-dealers in consideration of promotional or
administrative services.  

   
     During the period from February 1, 1997 (commencement of operations of the
Investor Class) to September 30, 1997, the Investor Class paid Distribution Plan
expenses of $247 to Ariel Distributors.  Of this amount, $76 was used to pay
broker-dealers for their distribution and maintenance services and $125 was used
for advertising, shareholder account maintenance, printing and related costs.

     The Fund has authorized certain Qualified Dealers to accept on its behalf
purchase and redemption orders.  Such Dealers are authorized to designate other
intermediaries to accept purchase and redemption orders on the Fund's behalf. 
The Fund will be deemed to have received a purchase or redemption order when an
authorized Dealer or such Dealer's authorized designee, accepts the order. 
Customer orders will be priced at the Fund's net asset value next computed after
they are accepted by an authorized Dealer or such Dealer's designee.
    

                           TRANSFER AGENT AND CUSTODIAN 
                                          
     Investors Fiduciary Trust Company ("IFTC") has been retained by the Trust
to act as transfer agent, custodian, dividend disbursing agent and shareholder
servicing agent. These responsibilities include: responding to shareholder
inquiries and instructions concerning their accounts; crediting and debiting
shareholder accounts for purchases and redemptions of Fund shares and confirming
such transactions; updating of shareholder accounts to reflect declaration and
payment of dividends; keeping custody of all of the Fund's investments; and
preparing and distributing quarterly statements to shareholders regarding their
accounts. 


                                    9

<PAGE>


                               PORTFOLIO TRANSACTIONS

     In addition to its management of the Fund's portfolio, the Sub-Adviser also
acts as investment adviser to various private accounts.  There may be times when
an investment decision may be made to purchase or sell the same security for the
Fund and one or more clients of the Sub-Adviser.  In those circumstances, the
transactions will be allocated as to amount and price in a manner considered
equitable to each.  In some instances, this procedure could adversely affect the
Fund but the Fund deems that any disadvantage in the procedure would be
outweighed by the increased selection available and the increased opportunity to
engage in volume transactions.


                                INDEPENDENT AUDITORS
                                          
     The Fund's independent auditors, Ernst & Young LLP, 233 South Wacker Drive,
Chicago, IL 60606, audit and report on the Fund's annual financial statements,
review certain regulatory reports and the Fund's federal income tax returns, and
perform other professional accounting, auditing, tax and advisory services when
engaged to do so by the Fund. Shareholders will receive annual audited financial
statements and semi-annual unaudited financial statements. 

   
                                GENERAL INFORMATION
                                          
     The Fund, together with Ariel Growth Fund and the Ariel Appreciation Fund
are the three series of Ariel Growth Fund (doing business as Ariel Investment
Trust), an open-end, diversified management investment company organized as a
serial Massachusetts business trust on April 1, 1986. The Declaration of Trust
contains an express disclaimer of shareholder liability for acts or obligations
of the Trust. The shareholders of a Massachusetts business trust might, however,
under certain circumstances, be held personally liable as partners for its
obligations. The Declaration of Trust provides for indemnification and
reimbursement of expenses out of Trust assets for any shareholder held
personally liable for obligations of the Trust.  The Declaration of Trust
further provides that the Trust may maintain appropriate insurance (for example,
fidelity bonding and errors and omissions insurance) for the protection of the
Trust, its shareholders, trustees, officers, employees and agents to cover
possible tort and other liabilities. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which both inadequate insurance exists and the Trust itself is unable to meet
its obligations. 
    

     Each share of a series of the Trust represents an equal proportionate
interest in that series and is entitled to such dividends and distributions out
of the income belonging to such shares as declared by the Board. Upon any
liquidation of the Trust, shareholders are entitled to share pro rata in the net
assets belonging to that series available for distribution. 

     The Prospectus and this Statement of Additional Information do not contain
all the information in the Fund's registration statement. The registration
statement is on file with the Securities and Exchange Commission and is
available to the public. 

                               TRUSTEES AND OFFICERS

     Set forth below are the principal occupations of the Trustees and Officers
during the last five years:

   
MARIO L. BAEZA, ESQ., 47, Trustee. Mr. Baeza is Chairman and Chief Executive
Officer, Latin America Partners, L.L.C. (Venture Capital).  Formerly, he was
President of Wasserstein Perella International Limited, and Managing Director
and Chief Executive Officer, Americas Division, Wasserstein Perella & Co., Inc.
Address: 200 Park Avenue, New York, New York 10166. 

JAMES COMPTON, 59, Trustee.  Mr. Compton is president and Chief Executive
Officer of Chicago Urban League.  Address:  4510 S. Michigan Ave., Chicago, IL 
60653.
    


                                       10

<PAGE>

   
WILLIAM C. DIETRICH, CPA, 48, Trustee. Mr. Dietrich is Chief Financial Officer
for Streamline Mid-Atlantic, Inc. (computerized shopping service).  He formerly
served as Vice President and Chief Financial Officer for Shoppers Express, Inc. 
Address: 5110 Ridgefield Road, Bethesda, Maryland 20816. 

ROYCE N. FLIPPIN, JR.,  63, Trustee.  Mr. Flippin is President of Flippin
Associates.  Formerly, he was Director of Program Advancement at the
Massachusetts Institute of Technology and was the Director of Athletics,
Physical Education and Recreation at MIT.  Address: 51 Frost Avenue, East
Brunswick, New Jersey  08816.

JOHN G. GUFFEY, JR., 49, Trustee. Mr. Guffey is Chairman of the Calvert Social
Investment Foundation, organizing director of the Community Capital Bank in
Brooklyn, New York, and a financial consultant to various organizations. In
addition, he is the Treasurer and Director of Silby, Guffey and Co., Inc., a
venture capital firm. Mr. Guffey was formerly an officer and is a
trustee/director of each of the investment companies in the Calvert Group of
Funds, except for Acacia Capital Corporation. Address: 7205 Pomander Lane, Chevy
Chase, Maryland 20815. 

CHRISTOPHER G. KENNEDY, 34, Trustee. Mr. Kennedy is Executive Vice President and
a Director of Merchandise Mart Properties, Inc., a real estate management firm. 
Prior to 1991, he was a student at the J.L. Kellogg Graduate School of
Management at Northwestern University. Address: The Merchandise Mart, 200 World
Trade Center, Suite 470, Chicago, Illinois 60654.

BERT N. MITCHELL, CPA, 59, Chairman of the Board and Trustee. Mr. Mitchell is
the Chairman and Chief Executive Officer of Mitchell & Titus L.L.P., the
nation's largest minority-owned certified public accounting firm.  Address: One
Battery Park Plaza, New York, New York 10004. 

*MELLODY L. HOBSON, 28, Trustee. Ms. Hobson is Senior Vice President, Director
of Marketing of Ariel Capital Management. Address: 307 North Michigan Avenue,
Suite 500, Chicago, Illinois 60601. 

*ERIC T. MCKISSACK, 44, Trustee and President. Mr. McKissack is Vice Chairman
and Co-Chief Investment Officer of Ariel Capital Management. Formerly, Mr.
McKissack was a research analyst at First National Bank of Chicago. Address: 307
North Michigan Avenue, Suite 500, Chicago, Illinois 60601. 

*JAMES W. ATKINSON, 47, Vice President.  Mr. Atkinson is Vice President, Finance
and Management of Ariel Capital Management.  Formerly, he was Senior Vice
President and Chief Executive Officer of Stein  Roe & Farnham, Inc. (investment
advisers).  Address: 307 North Michigan Avenue, Suite 500, Chicago, Illinois
60601.

*ROGER P. SCHMITT, 40, Vice President, Secretary and Assistant Treasurer. Mr.
Schmitt is Chief Operating Officer of Ariel Capital Management.  Formerly, Mr.
Schmitt was Marketing Manager with IBM Corporation. Address: 307 North Michigan
Avenue, Suite 500, Chicago, Illinois 60601. 

*EDWARD SINGLETON, 46, Treasurer and Assistant Secretary. Mr. Singleton is Vice
President and Executive Assistant to the President of Ariel Capital Management. 
He also operates an accounting and tax consulting business. Formerly, Mr.
Singleton was Manager of Tax and Regulatory Compliance for American Drug Stores,
Inc., a subsidiary of American Stores Company. Address: 307 North Michigan
Avenue, Suite 500, Chicago, Illinois 60601. 
    

- --------------------------------
(1)Officers and trustees deemed to be "interested persons" of the Fund under the
Investment Company Act of 1940. 

                               COMPENSATION SCHEDULE



                                11

<PAGE>

   
     During the fiscal year ended September 30, 1997, compensation paid to the
trustees of the Trust not affiliated with the Adviser was as follows:      
                                   
                        Aggregate Fund                   Total Fund
     Name               Compensation**              Complex Compensation***

Mario L. Baeza                     $2,983                   $8,950
James Compton*                     $1,600                   $4,800
William C. Dietrich                $2,983                   $8,650
Royce N. Flippin, Jr.              $2,983                   $8,950
John G. Guffey, Jr.                $2,983                   $8,950
Christopher G. Kennedy             $2,983                   $8,950
Bert N. Mitchell                   $2,983                   $8,950

*    Mr. Compton became a Trustee on May 20, 1997.
**   These amounts are paid by the Adviser and not the Fund pursuant to the
     Administrative Services Agreement between the Adviser and the Fund.
***  Complex compensation is the aggregate compensation paid, for services as a
     Trustee, by all mutual funds with the same investment adviser.  


                               SIGNIFICANT SHAREHOLDERS

     The following table lists the holders of more than five percent of the
outstanding shares of each class of the Fund as of January 12, 1998.

                                Institutional Class

Name and Address                   Number of Shares         Percentage of
of Owner                           Owned                    Outstanding Shares

McCormick & Co. Inv. Comm Tr            1,052,312.683                 9%

c/o Norwest Bank
McCormick Pension Plan
18 Loveton Cr.
Sparks, MD 21152

HW Ward Cust                       1,753,054.423                 15%

Hotel Empl & Rest. Empl
International Union Pension Fund
48 Shuman Blvd.
Naperville, IL 60563

    

                                    12

<PAGE>

   
Commonwealth Life Insurance Co.         1,332,995.694                 12%
Investment Operations
11th Floor
400 W. Market Street
Louisville, KY 40202

Comerica Bank Cust.                     2,499,551.404                 21%


IBEW Local 9 & Outside Contractor
Pension Plan
High Point Plaza Office Ctr.
4415 W. Harrison St., Suite 330
Hillside, IL  60162

Local No. 1 Pension Trust Fund               1,301,949.379                 11%

30 N. LaSalle Street, Suite 2000
Chicago, IL 60602

San Diego Hotel & Restaurant               699,112.543                  6%

Employees Health Fund
Attn: Mark Pappas
First National Bank
800 Silverado Street
LaJolla, CA 92037

Chicagoland Race Meet Operators            1,293,416.032                     11%

& IBEW Local No. 134 Jt. Pension
c/o Horsemans Guarantee Corp.
25 West Palatine Road
Palatine, IL 60067


                                    Investor Class

Name and Address              Number of Shares         Percentage of
of Owner                           Owned               Outstanding Shares

IFTC Co. Custodian                 3,692.652                6%
SEP IRA Robert David Blackwell
4536 South Lake Park Avenue
Chicago, IL 60653

Everen Clearing Corp.                   3,019.785                5%
A/C 5606-5306
FBO Chris J. Mollet
111 East Kilbourn Avenue
Milwaukee, WI 53202
    


                               13


<PAGE>


                          CALCULATION OF PERFORMANCE DATA

Total Return

     The Fund may advertise performance in terms of average annual total return
for 1-, 5- and 10-year periods, or for such lesser periods as the Fund has been
in existence.  Average annual total return is computed by finding the average
annual compounded rates of return over the periods that would equate the initial
amount invested to the ending redeemable value, according to the following
formula:

                                  P(1 + T)n = ERV

     Where:    P    =    a hypothetical initial payment of $1,000
          T    =    average annual total return
          n    =    number of years
          ERV  =    ending redeemable value of a hypothetical $1,000 payment
                    made at the beginning of the 1-, 5- or 10-year periods at
                    the end of the year or period.

     The calculation assumes all charges are deducted from the initial $1,000
payment and assumes all dividends and distributions by the Fund are reinvested
at the price stated in the prospectus on the reinvestment dates during the
period, and includes all recurring fees that are charged to all shareholder
accounts.

   
     The average annual total return for the fiscal year ended September 30,
1997 was 9.26% for the Institutional Class.  For the period from February 1,
1997 (commencement of operations) to September 30, 1997, the Investor Class had
a total return, not annualized, of 5.73%.
    

Yield

     The Fund may advertise performance in terms of a 30-day yield quotation. 
The 30-day yield quotation is computed by dividing the net investment income per
share earned during the period by the maximum offering price per share on the
last day of the period, according to the following formula:

   
     Yield = 2 [({a-b} OVER {cd} + 1)6 - 1] 

     Where:    a    =    dividends and interest earned during the period
               b    =    expenses accrued for the period (net of reimbursement)
               c    =    the average daily number of shares outstanding during
                         the period that were entitled to receive dividends
               d    =    the maximum offering price per share on the last day of
                         the period

     Based upon the 30-day period ended September 30, 1997 the yield for the
Bond Fund's Institutional Class of shares was 6.07% and 4.79% for the Investor
Class of shares.
    

Nonstandardized Total Return

     The Fund may provide the above described standard total return results for
a period which ends not earlier than the most recent calendar quarter end and
which begins either twelve months before or at the time of commencement of the
Fund's operations.  In addition, the Fund may provide nonstandardized total
return results for differing periods, such as for the most recent six months. 
Such nonstandardized total return is computed as otherwise described under
"Total Return" except that no annualization is made.


                                    14

<PAGE>

Distribution Rates

   
     The distribution rate is calculated by dividing income dividends per share
for a stated period by the offering price per share as of the end of the period
to which the distribution relates.  A distribution can include gross investment
income from debt obligations purchased at a premium and in effect include a
portion of the premium paid.  A distribution can also include gross short-term
capital gains without recognition of any unrealized capital losses.  Further, a
distribution can include income from the sale of options by the Fund even though
such option income is not considered investment income under generally accepted
accounting principles.  For the year ended September 30, 1997, the historical
distribution rate with respect to the Fund's Institutional Class Shares was
5.29% and for the Investor Class was 3.58%.
    

     Because a distribution can include such premiums, capital gains and option
income, the amount of the distribution may be susceptible to control by the
Adviser through transactions designed to increase the amount of such items. 
Also, because the distribution rate is calculated in part by dividing the latest
distribution by net asset value, the distribution rate will increase as the net
asset value declines.  A distribution rate can be greater than the yield rate
calculated as described above.

   
     Annualized current distribution rates are computed by multiplying income
dividends per share for a specified quarter by four and dividing the resulting
figure by the maximum offering price on the last day of the specified period. 
The annualized current distribution rate with respect to the Fund's
Institutional Class shares for the quarter ended September 30, 1997 was 6.05%
and for the Investor Class was 5.45%.
    





                                   15
 
<PAGE>

                                        APPENDIX A

                    Corporate Bond and Commercial Paper Ratings 


The following is a description of Moody's Investors Service, Inc.'s bond
ratings: 

Aaa: Bonds which are rated Aaa are judged to be of the best quality. They carry
the smallest degree of investment risk and are generally referred to as "gilt
edged."  Interest payments are protected by a large or by an exceptionally
stable margin and principal is secure.  While the various protective elements
are likely to change, such changes as can be visualized are unlikely to impair
the fundamentally strong position of such issues. 

Aa: Bonds which are rated Aa are judged to be of high quality by all standards. 
Together with the Aaa group, they comprise what are generally known as high
grade bonds.  They are rated lower than the best bonds because margins of
protection may not be as large as in Aaa securities or fluctuation of protective
elements may be of greater amplitude or there may be other elements present
which make long-term risks appear somewhat larger than Aaa securities. 

A: Bonds which are rated A possess many favorable investment attributes and are
to be considered as upper-medium-grade obligations. Factors giving security to
principal and interest are considered adequate, but elements may be present
which suggest a susceptibility to impairment sometime in the future.

Baa: Bonds which are rated Baa are considered as medium grade obligations, i.e.
they are neither highly protected nor poorly secured. Interest payments and
principal security appear adequate for the present but certain protective
elements may be lacking or may be characteristically unreliable over any great
length of time. Such bonds lack outstanding investment characteristics and in
fact have speculative characteristics as well. 

The following is a description of Standard & Poor's Corporation's investment
grade bond ratings: 

AAA: Bonds rated AAA are considered highest grade obligations. They possess the
ultimate degree of protection as to principal and interest. They move with
market interest rates, and thus provide the maximum safety on all counts. 

AA: Bonds rated AA are high-grade obligations. In the majority of instances,
they differ from AAA issues only to a small degree. Prices of AA bonds also move
with the long-term money market. 

A: Bonds rated A are upper medium grade obligations. They have considerable
investment strength, but are not entirely free from adverse effects of change in
economic and trade conditions. Interest and principal are regarded as safe. They
predominantly reflect money rates in their market behavior but, to some extent,
also economic conditions. 

BBB: Bonds rated BBB are medium grade obligations. They are considered
borderline between definitely sound obligations and those where the speculative
element begins to predominate. These bonds have adequate asset coverage and are
normally protected by satisfactory earnings. Their susceptibility to changing
conditions, particularly to depressions, necessitates constant monitoring. These
bonds are more responsive to business and trade conditions than to interest
rates. This group is the lowest that qualifies for commercial bank investment. 




                                    16

<PAGE>

Commercial paper rated A by Standard & Poor's Corporation has the following
characteristics: liquidity ratios are adequate to meet cash requirements;
long-term senior debt is rated "A" or better; the issuer has access to at least
two adequate channels of borrowing; basic earnings and cash flow have an upward
trend with allowance made for unusual circumstances; typically, the issuer's
industry is well-established and the issuer has a strong position within the
industry; and the reliability and quality of management are unquestioned. The
relative strength or weakness of the above factors determines whether an
issuer's commercial paper is rated A-1, A-2, or A-3. 

Issuers rated Prime-1 by Moody's Investors Services, Inc., are considered to
have superior capacity of repayment of short-term promissory obligations. Such
repayment capacity will normally be evidenced by the following characteristics:
leading market positions in well-established industries; high rates of return on
funds employed; conservative capitalization structure with moderate reliance on
debt and ample asset protection; broad margins in earnings coverage of fixed
financial charges and high internal cash generation; and well-established access
to a range of financial markets and assured sources of alternate liquidity.
Issuers rated Prime-2 have a strong capacity for repayment of short-term
promissory obligations. This will normally be evidenced by many of the
characteristics cited above but to a lesser degree. Earnings trends and coverage
ratios, while sound, will be more subject to variation. Capitalization
characteristics, while still appropriate, may be more affected by external
conditions. Ample alternate liquidity is maintained.








                              17

<PAGE>
   
                           PART C. OTHER INFORMATION

ITEM 24. FINANCIAL STATEMENTS AND EXHIBITS

     (a)  Financial statements-None

     (b)  Exhibits:

          1.   Declaration of Trust (incorporated by reference to Registrant's 
               Post-Effective Amendment No. 17, File No. 33-7699). 

          2.   By-Laws (incorporated by reference to Registrant's 
               Post-Effective Amendment No. 17, File No. 33-7699).

          3.   Not Applicable.
 
          4.   Not Applicable.

          5a.  Management Agreement (incorporated by reference to 
               Registrant's Post-Effective Amendment No. 17, 33-7699).

          5b.  Investment Advisory Agreement with respect to Ariel Premier
               Bond Fund (incorporated by reference to Registrant's 
               Post-Effective Amendment No. 15, File No. 33-7699).

          5c.  Sub-Advisory Agreement (incorporated by reference to 
               Registrant's Post-Effective Amendment No. 15, File No. 33-7699).

          5d.  Administrative Services Agreement with respect to Ariel 
               Premier Bond Fund (incorporated by reference to Registrant's 
               Post-Effective Amendment No. 16, File No. 33-7699).

          6.   Underwriting Agreement (incorporated by reference to 
               Registrant's Post-Effective Amendment No. 17, File No. 
               33-7699).

          7.   Not Applicable.

          8.   Custody Agreement (incorporated by reference to Registrant's 
               Post-Effective Amendment No. 17, File No. 33-7699).

          9.   Transfer Agency Contract (incorporated by reference to 
               Registrant's Post-Effective Amendment No. 17, File No. 
               33-7699).

          10.  Opinion and Consent of Counsel as to Legality of Shares 
               Being Registered.

                                       1
    

<PAGE>
   

          11a. Report of Independent Auditors.
      
          11b. Consent of Independent Auditors to Use of Report.
      
          12.  Not Applicable.
      
          13.  Not Applicable.
      
          14.  Retirement Plans (incorporated by reference to Registrant's 
               Post-Effective Amendment No. 13, File No. 33-7699).
      
          15.  Rule 12b-1 Distribution Plan (incorporated by reference to 
               Registrant's Post-Effective Amendment No. 17, File No. 
               33-7699).
      
          16.  Schedule for Computation of Performance Quotation 
               (incorporated by reference to Registrant's Post-Effective 
               Amendment No. 17, File No. 33-7699).
      
          17.  Not Applicable.
      
          18a. Power of attorney of James Compton.
      
          18b. Powers of Attorney (incorporated by reference to Registrant's 
               Post-Effective Amendments No. 16 and 17, File No. 33-7699).
      
          18c. Plan Pursuant to Rule 18f-3 (incorporated by reference to 
               Registrant's Post-Effective Amendment No. 15, File No. 
               33-7699).
      
          27.  Financial Data Schedule.

ITEM 25. PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT

               Not Applicable.

ITEM 26. NUMBER OF HOLDERS OF SECURITIES

    As of January 8, 1998 there were 8,569 holders of record of Registrant's 
shares of beneficial interest for Ariel Growth Fund.

    As of January 8, 1998 there were 9,792 holders of record of Registrant's 
shares of beneficial interest for Ariel Appreciation Fund.

                                      2
    

<PAGE>
   
    As of January 8, 1998 there were 56 holders of record of Registrant's 
shares of beneficial interest for Ariel Premier Bond Fund - Institutional 
Class.

    As of January 8, 1998 there were 190 holders of record of Registrant's 
shares of beneficial interest for Ariel Premier Bond Fund - Investor Class.

ITEM 27. INDEMNIFICATION

    Registrant's Declaration of Trust provides, in summary, that officers, 
trustees, employees, and agents shall be indemnified by Registrant against 
liabilities and expenses incurred by such persons in connection with actions, 
suits, or proceedings arising out of their offices or duties of employment, 
except that no indemnification can be made to such a person if he has been 
adjudged liable of willful misfeasance, bad faith, gross negligence, or 
reckless disregard of his duties.

    Registrant's Declaration of Trust also provides that Registrant may 
purchase and maintain liability insurance on behalf of any officer, trustee, 
employee or agent against any liabilities arising from such status. In this 
regard, Registrant maintains, jointly with the Adviser, a Directors & Officers
(Partners) Liability Insurance policy providing Registrant and the Adviser 
with directors and officers liability coverage.

ITEM 28. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER

    Ariel Capital Management, Inc., the Registrant's investment adviser, 
renders investment advisory services to individual, institutional and pension 
and profit-sharing plan accounts. The following directors and officers of the 
adviser have been engaged in other professions and/or employment capacities 
during the past two fiscal years, as indicated below.


                                 Name of Company,
Name and Title                   Principal Business              
With Adviser                     Address                         Capacity
- --------------                   ------------------              --------

James E. Bowman, Jr., M.D.       University of Chicago           Professor
Director                         Dept. of Pathology
                                 Chicago, IL 60637

Herbert D. Odom, D.D.S.          c/o CBS Guardianship            Retired
Director                         7234 West North Avenue,
                                 Suite 408
                                 Elmwood Park, IL 60635

Anna Perez                       The Walt Disney Company         V.P.,
Director                         500 S. Buena Vista St.          Government
                                 Burbank, CA 91512               Relations

                                            3
    

<PAGE>

   
Robert I. Solomon                Silliker Laboratories          Vice
Director                         900 Maple Road                  President,
                                 Homewood, IL 60430              Marketing

Paula Wolff                      Governors' State University     President
Director                         University Park, IL 60466


ITEM 29. PRINCIPAL UNDERWRITERS

    Ariel Distributors, Inc., located at 307 North Michigan Avenue, Suite 
500, Chicago IL 60601, serves as the principal underwriter of the 
Registrant. Ariel Distributors, Inc. does not act as principal underwriter 
for any other investment company.

    (b) Positions of Ariel Distributors' Officers and Directors:

    Name and Principal            Position(s) with     Position(s) with
     Business Address                Underwriter          Registrant
    ------------------            ----------------     ----------------

John Washington Rogers, Jr.   President, Treasurer and       None
                              Chairman of the Board

Eric T. McKissack             Vice-Chairman                  Trustee and
                                                             President

James Atkinson                Executive Vice-President       Vice President
                              of Finance and
                              Administration

Edward Singleton              Vice President and             Treasurer and
                              Executive Assistant to the     Assistant 
                              President                      Secretary

Roger P. Schmitt              Chief Operating Officer,       Vice President,
                              Vice President, Secretary      Secretary and
                                                             Assistant 
                                                             Treasurer

Mellody Hobson                Senior Vice President          Trustee and
                                                             Vice President

Peter Thompson                Vice President                 None

John Miller                   Vice President                 None

Cheryl A. Cargie              Vice President                 None

Gary J. Leong                 Vice President                 None

Franklin Morton               Vice President                 None

                                       4
    

<PAGE>

   
Lisa Hardiman                 Vice President                 None

    The business address of the above individuals is 307 North Michigan 
Avenue, Suite 500, Chicago, Illinois 60601.

Name and Principal           Position(s) with           Position(s) with
 Business Address              Underwriter                 Registrant
- ------------------           ----------------           ----------------

James E. Bowman, Jr.            Director                      None
University of Chicago
Dept. Of Pathology
Chicago Illinois 60637

Herbert D. Odom, D.D.S.         Director                      None
c/o CBS Guardianship
7234 West North Avenue,
Suite 408
Elmwood Park, IL 60635

Henry B. Pearsall               Director                      None
721 Ontario, Unit 209
Oak Park, IL 60302

Anna Perez                      Director                      None
The Walt Disney Company
500 S. Buena Vista Street
Burbank,CA 91512

Robert I. Solomon               Director                      None
Silliker Laboratories
900 Maple Road
Homewood, Illinois 60430

Paula Wolff                     Director                      None
Governors' State University
University Park, Illinois
60466

ITEM 30. LOCATION OF ACCOUNTS AND RECORDS.

    All documents and records relating to Ariel Distributors, Inc. are 
located at Ariel Capital Management, Inc., 307 North Michigan Avenue, 
Chicago, Illinois 60601

                                       5
    

<PAGE>
   

    All documents and records relating to the Ariel Mutual Funds are located 
at Sunstone Financial Services, 207 E. Buffalo Street, Suite 400, Milwaukee, 
Wisconsin 53202

ITEM 31. MANAGEMENT SERVICES.

         Not applicable.

ITEM 32. UNDERTAKINGS.

    The Registrant undertakes to furnish to each person to whom a Prospectus 
is delivered, a copy of the Registrant's latest Annual Report to 
Shareholders, upon request and without charge.


                                        6
    

<PAGE>
                                  ARIEL GROWTH FUND

                                      SIGNATURES

     Registrant certifies that this Amendment meets all of the requirements 
for effectiveness pursuant to Rule 485(b).

     Pursuant to the requirements of the Securities Act of 1933 and/or the 
Investment Company Act of 1940, the Registrant certifies that it has duly 
caused this Registration Statement to be signed on its behalf by the 
undersigned, thereunto duly authorized, in the City of Chicago and State of 
Illinois on the 28th day of January, 1998.

                                   ARIEL GROWTH FUND


                                   By:  /s/ Sheldon R. Stein
                                        ---------------------------------------
                                                 Sheldon R. Stein,
                                                 Attorney-in-fact


     Pursuant to the requirements of the Securities Act of 1933, this 
Registration Statement has been signed below by the following persons in the 
capacities and on the dates indicated.

    Signature                      Title                     Date
    ---------                      -----                     ----

Eric T. McKissack*         Chief Executive            January 28, 1998
- -----------------          Officer and Trustee
Eric T. McKissack


Edward Singleton*          Principal Financial        January 28, 1998
- -----------------          and Accounting Officer
Edward Singleton


                                   *By: /s/ Sheldon R. Stein
                                        -------------------------------------
                                            Sheldon R. Stein,
                                            Attorney-in-Fact


     *Sheldon R. Stein signs this document on behalf of the Registrant 
pursuant to the power of attorney filed as Exhibit 18(a) to Post-Effective 
Amendment No. 16 and the foregoing officers pursuant to the Powers of 
Attorney filed as Exhibit 18(a) to Post-Effective Amendment No. 17.

                                           
<PAGE>

                                  ARIEL GROWTH FUND

     Pursuant to the requirements of the Securities Act of 1933, this 
Registration Statement has been signed below by the following persons in the 
capacities and on the dates indicated.

    Signature                      Title                     Date
    ---------                      -----                     ----

Mario Baeza*                      Trustee              January 28, 1998
- -----------------------
Mario Baeza


James Compton*                    Trustee              January 28, 1998
- -----------------------
James Compton


William C. Dietrich*              Trustee              January 28, 1998
- -----------------------
William C. Dietrich


Royce N. Flippin, Jr.*            Trustee              January 28, 1998
- -----------------------
Royce N. Flippin, Jr.


John G. Guffey, Jr.*              Trustee              January 28, 1998
- -----------------------
John G. Guffey, Jr.


Christopher G. Kennedy*           Trustee              January 28, 1998
- -----------------------
Christopher G. Kennedy


Bert N. Mitchell*                 Trustee              January 28, 1998
- -----------------------
Bert N. Mitchell


Mellody Hobson*                   Trustee              January 28, 1998
- ------------------------
Mellody Hobson


     *Sheldon R. Stein signs this document on behalf of each of the foregoing 
persons pursuant to the Powers of Attorney filed as Exhibit 18(a) to 
Post-Effective Amendment No. 17.

                                        /s/ Sheldon R. Stein
                                        -------------------------------------
                                            Sheldon R. Stein,
                                            Attorney-in-Fact



<PAGE>


                     [LETTERHEAD OF DANCONA & PFLAUM]           Exhibit 10

January 28, 1998


Ariel Investment Trust
307 N. Michigan Avenue
Suite 500
Chicago, Illinois 60601

          Re:  Ariel Growth Fund, Ariel Appreciation Fund and 
               Ariel Premier Bond Fund (the "Funds")

Ladies and Gentlemen:

     We have acted as counsel for Ariel Investment Trust (the "Trust") in 
connection with the registration under the Securities Act of 1933 (the "Act") 
of an indefinite number of shares of beneficial interest of the series of the 
Trust designated Ariel Growth Fund, Ariel Appreciation Fund and Ariel Premier 
Bond Fund (the "Shares") in registration statement no. 33-7699 on Form N-1A 
(the "Registration Statement").

     In this connection we have examined originals, or copies certified or 
otherwise identified to our satisfaction, of such documents, corporate and 
other records, certificates and other papers as we deemed it necessary to 
examine for the purpose of this opinion, including the agreement and 
declaration of trust (the "Trust Agreement") and bylaws of the Trust, actions 
of the board of trustees of the Trust authorizing the issuance of shares of 
the Funds and the Registration Statement.

     Based on the foregoing examination, we are of the opinion that upon the 
issuance and delivery of the Shares of each Fund in accordance with the Trust 
Agreement and the actions of the board of trustees authorizing the issuance 
of the Shares, and the receipt by the Trust of the authorized consideration 
therefor, the Shares so issued will be validly issued, fully paid and 
nonassessable (although shareholders of the Fund may be subject to liability 
under certain circumstances as described in the statement or additional 
information of the Trust included as Part B of the Registration Statement 
under the caption "General Information").

     We consent to the filing of this opinion as an exhibit to the 
Registration Statement. In giving this consent, we do not admit that we are 
in the category of persons whose consent is required under section 7 of the 
Act.

                                       Very truly yours,

                                       /s/ D'ANCONA & PFLAUM


<PAGE>

                                                            Exhibit 11a

                           Report of Independent Auditors


To the Board of Trustees and Shareholders of
Ariel Mutual Funds


We have audited the accompanying statement of assets and liabilities, including
the schedule of investments, of Ariel Growth Fund, Ariel Appreciation Fund, and
Ariel Premier Bond Fund, comprising  Ariel Investment Trust ("Ariel Mutual
Funds"), as of September 30, 1997, the related statement of operations, the
statement of changes in net assets and the financial highlights for the fiscal
periods indicated therein.  These financial statements and financial highlights
are the responsibility of the Ariel Mutual Funds' management.  Our
responsibility is to express an opinion on these financial statements and
financial highlights based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements and financial
highlights are free of material misstatement.  An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements.  Our procedures included confirmation of securities owned as of
September 30, 1997, by correspondence with the custodian.  An audit also
includes assessing the accounting principles used and significant estimates made
by management, as well as evaluating the overall financial statement
presentation.  We believe that our audits provide a reasonable basis for our
opinion.

In our opinion, the financial statements and financial highlights referred to
above present fairly, in all material respects, the financial position of each
of the Funds of the Ariel Mutual Funds at September 30, 1997, and the results of
their operations, the changes in their net assets and the financial highlights
for each of the fiscal periods indicated therein, in conformity with generally
accepted accounting principles.


                                       Ernst & Young LLP




Chicago, Illinois
October 17, 19978


<PAGE>

                                                                   Exhibit 11b

                                       
                       CONSENT OF INDEPENDENT AUDITORS


We consent to the reference to our firm under the captions "Financial 
Highlights" and "Independent Auditors" and to the use of our report dated 
October 17, 1997 in the Registration Statement (Form N-1A) of the Ariel 
Growth Fund and its incorporation by reference in the related Prospectuses of 
Ariel Growth Fund, Appreciation Fund and Ariel Premier Bond Fund, filed with 
the Securities and Exchange Commission in the Post-Effective Amendment No. 20 
to the Registration Statement under the Securities Act of 1933 (File No. 
33-7699) and in this Amendment No. 20 to the Registration Statement under the 
Investment Company Act of 1940 (File No. 811-4786).

                                          ERNST & YOUNG LLP



Chicago, Illinois
January 23, 1998


<PAGE>

                                                            Exhibit 18.a


                                  ARIEL GROWTH FUND


                                  POWER OF ATTORNEY

     KNOW ALL PEOPLE BY THESE PRESENTS, that the undersigned constitutes and
appoints Sheldon R. Stein, Arthur Don, John W. Rogers, Jr., Mellody L. Hobson
and Roger P. Schmitt, and each of them, his attorneys-in fact, each with the
power of substitution, for him in any and all capacities, to sign any
post-effective amendments to the registration statement under the Securities Act
of 1933 (Registration No. 33-7699) and/or the Investment Company Act of 1940
(Registration No. 811-4786), whether on Form N-1A or any successor forms
thereof, and to file the same, with exhibits thereto and other documents in
connection therewith, with the Securities and Exchange Commission and all
appropriate state or federal regulatory authorities.  Tthe undersigned hereby
ratifies and confirms all that each of the aforenamed attorneys-in-fact, or his
or her substitute or substitutes, may do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 21st day of January, 1998.



/s/ James Compton
James Compton 
Trustee


<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<CIK> 0000798365
<NAME> ARIEL GROWTH FUND
<SERIES>
   <NUMBER> 1
   <NAME> ARIEL GROWTH FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                       93,872,004
<INVESTMENTS-AT-VALUE>                     164,740,245
<RECEIVABLES>                                  300,710
<ASSETS-OTHER>                                  35,034
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             165,075,989
<PAYABLE-FOR-SECURITIES>                       797,105
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      213,423
<TOTAL-LIABILITIES>                          1,010,528
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    78,627,424
<SHARES-COMMON-STOCK>                        3,954,806
<SHARES-COMMON-PRIOR>                        3,589,095
<ACCUMULATED-NII-CURRENT>                      296,368
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                     14,273,428
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    70,868,241
<NET-ASSETS>                               164,065,461
<DIVIDEND-INCOME>                            1,686,750
<INTEREST-INCOME>                              215,211
<OTHER-INCOME>                                       0
<EXPENSES-NET>                             (1,605,603)
<NET-INVESTMENT-INCOME>                        296,358
<REALIZED-GAINS-CURRENT>                    14,275,357
<APPREC-INCREASE-CURRENT>                   33,739,637
<NET-CHANGE-FROM-OPS>                       48,015,004
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                   (6,352,876)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      8,947,566
<NUMBER-OF-SHARES-REDEEMED>                (8,766,712)
<SHARES-REINVESTED>                            184,857
<NET-CHANGE-IN-ASSETS>                      54,295,424
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    6,350,947
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          838,232
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              1,605,603
<AVERAGE-NET-ASSETS>                       130,003,671
<PER-SHARE-NAV-BEGIN>                            30.58
<PER-SHARE-NII>                                   0.07
<PER-SHARE-GAIN-APPREC>                          12.62
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (1.78)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              41.49
<EXPENSE-RATIO>                                   1.25
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<CIK> 0000798365
<NAME> ARIEL GROWTH FUND
<SERIES>
   <NUMBER> 2
   <NAME> ARIEL APPRECIATION FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                      106,895,796
<INVESTMENTS-AT-VALUE>                     187,307,234
<RECEIVABLES>                                  322,083
<ASSETS-OTHER>                                  12,962
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             187,642,279
<PAYABLE-FOR-SECURITIES>                       879,163
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      285,010
<TOTAL-LIABILITIES>                          1,164,173
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    88,581,282
<SHARES-COMMON-STOCK>                        5,533,096
<SHARES-COMMON-PRIOR>                        5,428,331
<ACCUMULATED-NII-CURRENT>                       95,385
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                     17,390,001
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    80,411,438
<NET-ASSETS>                               186,478,106
<DIVIDEND-INCOME>                            1,901,857
<INTEREST-INCOME>                              244,434
<OTHER-INCOME>                                       0
<EXPENSES-NET>                             (2,035,883)
<NET-INVESTMENT-INCOME>                        110,408
<REALIZED-GAINS-CURRENT>                    18,598,505
<APPREC-INCREASE-CURRENT>                   37,099,202
<NET-CHANGE-FROM-OPS>                       55,808,115
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    (397,468)
<DISTRIBUTIONS-OF-GAINS>                   (7,316,330)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      1,486,623
<NUMBER-OF-SHARES-REDEEMED>                (1,650,759)
<SHARES-REINVESTED>                            268,901
<NET-CHANGE-IN-ASSETS>                      50,850,900
<ACCUMULATED-NII-PRIOR>                        382,445
<ACCUMULATED-GAINS-PRIOR>                    6,107,826
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        1,151,445
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              2,035,883
<AVERAGE-NET-ASSETS>                       153,949,846
<PER-SHARE-NAV-BEGIN>                            24.99
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                          10.13
<PER-SHARE-DIVIDEND>                            (0.07)
<PER-SHARE-DISTRIBUTIONS>                       (1.37)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              33.70
<EXPENSE-RATIO>                                   1.33
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<CIK> 0000798365
<NAME> ARIEL GROWTH FUND
<SERIES>
   <NUMBER> 4
   <NAME> ARIEL PREMIER BOND FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                      111,890,510
<INVESTMENTS-AT-VALUE>                     113,474,797
<RECEIVABLES>                                1,006,414
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             114,481,211
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       82,000
<TOTAL-LIABILITIES>                             82,000
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   112,271,361
<SHARES-COMMON-STOCK>                           39,000
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                        4,050
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        539,513
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     1,584,287
<NET-ASSETS>                               114,399,211
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            4,486,479
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (311,174)
<NET-INVESTMENT-INCOME>                      4,175,305
<REALIZED-GAINS-CURRENT>                       570,915
<APPREC-INCREASE-CURRENT>                    1,572,509
<NET-CHANGE-FROM-OPS>                        6,318,729
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (4,175,319)
<DISTRIBUTIONS-OF-GAINS>                      (93,776)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         40,697
<NUMBER-OF-SHARES-REDEEMED>                    (2,413)
<SHARES-REINVESTED>                                716
<NET-CHANGE-IN-ASSETS>                      99,032,591
<ACCUMULATED-NII-PRIOR>                          4,064
<ACCUMULATED-GAINS-PRIOR>                       62,374
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          310,927
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                311,174
<AVERAGE-NET-ASSETS>                        68,185,446
<PER-SHARE-NAV-BEGIN>                            10.10
<PER-SHARE-NII>                                   0.37
<PER-SHARE-GAIN-APPREC>                           0.19
<PER-SHARE-DIVIDEND>                            (0.37)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.29
<EXPENSE-RATIO>                                   0.85
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<CIK> 0000798365
<NAME> ARIEL GROWTH FUND
<SERIES>
   <NUMBER> 3
   <NAME> ARIEL PREMIER BOND FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                      111,890,510
<INVESTMENTS-AT-VALUE>                     113,474,797
<RECEIVABLES>                                1,006,414
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             114,481,211
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       82,000
<TOTAL-LIABILITIES>                             82,000
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   112,271,361
<SHARES-COMMON-STOCK>                       11,067,707
<SHARES-COMMON-PRIOR>                        1,544,997
<ACCUMULATED-NII-CURRENT>                        4,050
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        539,513
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     1,584,287
<NET-ASSETS>                               114,399,211
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            4,486,479
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