SPECTRA FUND INC
485BPOS, 1999-02-26
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              As filed with the Securities and Exchange Commission
                              on February 26, 1999
    


                        Securities Act File No. 33-98102
                    Investment Company Act File No. 811-1743

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington D. C. 20549

                                                                          ---
         REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933           x
                                                                          ---
                                                                          ---
                         Post-Effective Amendment No. 5                    x
                                                                          ---

                                     and/or
                                                                          ---
       REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940     x
                                                                          ---

                                                                          ---
                               Amendment No. 18                            x
                                                                          ---
                        (Check appropriate box or boxes)


                                  SPECTRA FUND
- --------------------------------------------------------------------------------
               (Exact Name of Registrant as Specified in Charter)

           1 WORLD TRADE CENTER, SUITE 9333
           NEW YORK, NEW YORK                                      10048
- --------------------------------------------------------------------------------
(Address of Principal Executive Offices)                         (Zip Code)

Registrant's Telephone Number, including Area Code:            212-806-8800


                               MR. GREGORY S. DUCH
                           FRED ALGER MANAGEMENT, INC.
                        1 WORLD TRADE CENTER, SUITE 9333
                               NEW YORK, NY 10048
- -------------------------------------------------------------------------------
                     (Name and Address of Agent for Service)

<PAGE>

   
It is proposed that this filing will become effective (check appropriate box):

 X
- ---       immediately upon filing pursuant to paragraph (b), or

- ---       on [date] pursuant to paragraph (b), or

- ---       60 days after filing pursuant to paragraph (a), or

- ---       on [date] pursuant to paragraph (a)(2) of Rule 485

                              ---------------------
    

                                  SPECTRA FUND

                                   FORM N-1A

                             CROSS REFERENCE SHEET

<TABLE>
<CAPTION>
PART A
ITEM NO.                                                               PROSPECTUS HEADING
- --------                                                               ------------------
<S>      <C>                                                           <C>                                  
1.       Front and Back Cover Pages ...........................        Front and Back Cover Pages

2.       Risk/Return Summary: Investments, Risks and
           Performance ........................................        Risk/Return Summary:
                                                                       Investments, Risks & Performance

3.       Risk/Return Summary: Fee Table .......................        Fees and Expenses

4.       Investment Objectives, Principal Investment
           Strategies, and Related Risks ......................        Additional Information About
                                                                       the Fund's Investments

5.       Management's Discussion of Fund Performance...........        Not Applicable

6.       Management, Organization, and Capital Structure ......        Management & Organization

7.       Shareholder Information ..............................        Shareholder Information;
                                                                       Purchasing and Redeeming Fund Shares

8.       Distribution Arrangements ............................        Purchasing and Redeeming Fund Shares

9.       Financial Highlights Information .....................        Financial Highlights


PART B                                                                 HEADING IN STATEMENT OF
ITEM NO.                                                               ADDITIONAL INFORMATION
- --------                                                               ----------------------
10.      Front Cover Page .....................................        Front Cover Page
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
<S>      <C>                                                           <C>
11.      Fund History .........................................        Organization

12.      Description of the Fund and Its Investments
           and Risks ..........................................        Investment Strategies and Policies;
                                                                       Appendix

13.      Management of the Fund ...............................        Management

14.      Control Persons and Principal Holders of
           Securities .........................................        Certain Shareholders

15.      Investment Advisory and Other Services ...............        Management; Custodian and Transfer
                                                                       Agent; Purchases and Redemptions; 
                                                                       See in the Prospectus
                                                                       Management & Organization

16.      Brokerage Allocation and Other Practices .............        Investment Strategies and Policies

17.      Capital Stock and Other Securities ...................        Organization; See in the Prospectus
                                                                       Management & Organization;
                                                                       Shareholder Information; Purchasing
                                                                       & Redeeming Fund Shares

18.      Purchase, Redemption and Pricing of Secu-
         rities Being Offered .................................        Net Asset Value; Purchases and Redemptions

19.      Taxation of the Fund .................................        Taxes; See in the Prospectus "Shareholder Information"

20.      Underwriters .........................................        Purchases and Redemptions

21.      Calculation of Performance Data ......................        Determination of Performance; See
                                                                       in the Prospectus "Performance"

22.      Financial Statements .................................        Financial Statements

</TABLE>

PART C

         Information  required  to be  included in Part C is set forth under the
appropriate item, so numbered, in Part C to this Registration Statement.

<PAGE>

   
      SPECTRA FUND

      INVESTING IN COMPANIES OF ALL SIZES TO ACHIEVE
      CAPITAL APPRECIATION

                                                              PROSPECTUS
                                                           March 1, 1999

      As with all mutual funds,  the Securities and Exchange  Commission has not
      determined if the  information in this Prospectus is accurate or complete,
      nor has it  approved or  disapproved  these  securities.  It is a criminal
      offense to represent otherwise.

      An investment in the Fund is not a deposit of a bank and is not insured or
      guaranteed  by the  Federal  Deposit  Insurance  Corporation  or any other
      government agency.
    

<PAGE>

SPECTRA FUND

                                                            PROSPECTUS
                                                         March 1, 1999

TABLE OF CONTENTS
- --------------------------------------------------------------------------------
2 ................Risk/Return Summary: Investments, Risks & Performance

3 ................Fees & Expenses

4 ................Additional Information About
                  the Fund's Investments

4 ................Management & Organization

5 ................Shareholder Information

5 ................Purchasing and Redeeming
                  Fund Shares

6 ................Investment Instructions

7 ................Redemption Instructions

8 ................Financial Highlights

Back Cover .......How to obtain more information

<PAGE>

[GRAPH]

RISK/RETURN SUMMARY: INVESTMENTS,
RISKS & PERFORMANCE

INVESTMENT GOAL AND APPROACH

THE FUND SEEKS LONG-TERM CAPITAL APPRECIATION.

It invests primarily in equity  securities,  such as common or preferred stocks,
which are listed on U.S. exchanges or in the over-the-counter market.


   
The Fund invests primarily in "growth" stocks.
    

The Fund's Manager,  Fred Alger Management,  Inc., believes that these companies
tend to fall into one of two categories:

[ ]  High Unit Volume Growth
     Vital, creative companies which offer goods or services to a rapidly
     expanding marketplace. They include both established and emerging firms,
     offering new or improved products, or firms simply fulfilling an increased
     demand for an existing line.

[ ]  Positive Life Cycle Change
     Companies experiencing a major change which is expected to produce
     advantageous results. These changes may be as varied as new management,
     products or technologies; restructuring or reorganization; or merger and
     acquisition.

The Fund can leverage,  that is, borrow money, to buy additional  securities for
its portfolio.  By borrowing  money,  the Fund has the potential to increase its
returns if the  increase in the value of the  securities  purchased  exceeds the
cost of borrowing, including interest paid on the money borrowed.

PRINCIPAL RISKS

The main risks in investing in the Fund are:

[ ]  fluctuation in Fund price per share due to changes in the market prices of
     its investments

[ ]  the tendency of stocks, especially "growth" stocks, to be more volatile
     than some other investments you could make, such as bonds

[ ]  the risk that the cost of borrowing money to leverage will exceed the
     returns for the securities purchased or that the securities purchased may
     actually go down in value; thus, the Fund's net asset value could decrease
     more quickly than if it had not borrowed.

Prices  of growth  stocks  tend to be higher  in  relation  to their  companies'
earnings,  and  may  be  more  sensitive  to  market,   political  and  economic
developments  than other stocks,  making their prices more volatile. 

The Fund's trading in some stocks may be relatively short-term, meaning that the
Fund may buy a  security  and sell it a short time  later to take  advantage  of
current  gains if it is  believed  that an  alternative  investment  may provide
greater future growth.  This activity may create higher transaction costs due to
commissions and other expenses.  In addition, a high level of short-term trading
may increase the Fund's realized gains, thereby increasing the amount of taxable
distributions to shareholders at the end of the year.

As with any equity fund, your  investment  will go up or down in value,  and the
loss of your investment is a risk of investing.  Based on the Fund's  investment
objective, an investment in the Fund may be better suited for investors who seek
long-term  capital growth and can tolerate  fluctuations  in their  investment's
value.

2

<PAGE>

PERFORMANCE

The following bar chart shows the changes in the Fund's performance from year to
year and gives you some  indication  of the risks of investing in the Fund.  The
table  beneath it compares the Fund's  performance  over several  periods with a
broad measure of market performance.  The performance  reflects  reinvestment of
dividends and  distributions.*  Remember that the Fund's performance in the past
is not necessarily an indication of how it will perform in the future.

- -----------------
* Dividends  and  distributions  paid prior to February 12, 1996,  when the Fund
converted from a closed-end fund, are reflected as reinvested at market value.

Annual Total Return as of December 31 each year (%)

[GRAPHIC OMITTED]
31.61  2.81  57.30  8.49  27.56  3.66  47.89  19.48  24.69  47.94
  89    90     91    92    93     94     95    96      97    98

Best Quarter:       Q1 1991        +35.23%
Worst Quarter:      Q3 1990       - 19.18%

The following  table  compares the Fund's  performance  with that of the S&P 500
Index.

Average Annual Total Return as of December 31, 1998

                   1 Year   5 Years 10 Years  20 Years
- --------------------------------------------------------------------------------
Spectra Fund       47.94%   27.54%   25.81%    22.71%
S&P 500 Index      28.58%   24.06%   19.21%    17.98%


S&P 500  INDEX IS AN  UNMANAGED  INDEX  COMPOSED  OF 500 LARGE  COMPANY  STOCKS.
INVESTORS CANNOT MAKE INVESTMENTS DIRECTLY INTO AN INDEX.


[PICTURE]


FEES AND EXPENSES

Investors  incur certain fees and expenses in  connection  with an investment in
the Fund.  The table below shows the fees and expenses that you may incur if you
buy and hold shares of the Fund.

Shareholder Fees

(fees paid directly from your investment)     None

Annual Fund Operating Expenses
(expenses that are deducted from Fund assets)

     Management Fees                          1.50%
     Distribution Fees                         None
     Other Expenses                           0.46%*

 Total Annual Fund Operating Expenses         1.96%

- -------------
* Includes 0.06% of interest expense.

EXAMPLE

The example  below is intended to help you compare the cost of  investing in the
Fund with the cost of investing in other mutual funds.

The example  assumes  that you invest  $10,000 in the Fund for the time  periods
indicated.  The example also assumes that your  investment  has a 5% return each
year and that the  Fund's  operating  expenses  remain  the same as in the table
above.  The figures  shown would be the same whether you sold your shares at the
end of each period or kept them.  Although  your  actual  costs may be higher or
lower, based on these assumptions your costs would be:

   1 Year      3 Years       5 Years        10 Years
- --------------------------------------------------------------------------------
    $199         $615         $1,057         $2,285

                                                                               3

<PAGE>

The Fund pays its Distributor, Fred Alger & Company, Incorporated, a shareholder
servicing  fee of .25% of the value of the Fund's  average  daily net assets for
service and maintenance of shareholder accounts. The Distributor may pay some of
this fee to other  organizations  that also provide  service and  maintenance of
shareholder accounts.


[PICTURE]


ADDITIONAL INFORMATION ABOUT
THE FUND'S INVESTMENTS

The  Fund  may  invest  up to 100% of its  assets  in  cash,  commercial  paper,
high-grade  bonds, or cash  equivalents for temporary  defensive  reasons if the
Manager  believes that adverse market or other  conditions  warrant.  This is to
attempt to protect the Fund's assets from a temporary unacceptable risk of loss,
rather  than  directly  to  promote  the  Fund's  investment  objective. 

Other securities the Fund may invest in are discussed in the Fund's Statement of
Additional Information (see back cover).

Management and  Organization
Manager
Fred Alger  Management,  Inc.
1 World Trade Center 
Suite 9333 
New York, NY 10048

The Manager has been an investment  adviser since 1964, and manages  investments
totaling  (at  12/31/98)  $6.64  billion in mutual  fund assets as well as $3.95
billion in other assets.  The Manager makes  investments  decisions for the Fund
and continuously  reviews and administers the Fund's investment  program.  These
management   responsibilities  are  subject  to  the  Fund's  Board  ofTrustees'
supervision.  The Fund has had the same Manager since 1974, and pays the Manager
a fee at an annual rate of 1.50% of its average daily net assets.

PORTFOLIO MANAGERS

   
David Alger and David Hyun are the  individuals  responsible  for the day-to-day
management of the Fund's  portfolio and have served in that capacity  since 1971
and 1998, respectively.  Mr. Alger has been employed by the Manager as Executive
Vice President and Director of Research since 1971, and as President since 1995.
Mr.  Hyun has been  employed  by the  Manager as an Analyst  since 1991 and as a
Senior Vice President since 1998.
    

Year 2000
The  Fund's  Manager  and  Distributor  have  advised  the  Fund  that  they are
implementing  a Year 2000 plan to  address  any  issues  arising  from  computer
systems' potentially erroneous reading of dates in the year 2000.  Specifically,
they are in the process of  confirming  that the Fund's  service  providers  are
resolving any Year 2000 issues as the millennium approaches.  While there can be
no  assurance  that  there  will be no  impairment  of  services  at that  time,
currently it is not anticipated that shareholders'  investments in the Fund will
be impacted negatively as a result of the Fund's Year 2000 transition.  However,
people and resources have been devoted to this important review.


Year 2000 issues, real or perceived, may also adversely affect stock prices. The
Manager intends to review SEC filings and other Year 2000 readiness  information
from companies in which the Fund may invest significantly,  as well as readiness
information  from  other  sources.  The  Manager  and the Fund have no reason to
believe that such measures  will not be  sufficient to avoid a material  adverse
effect on the Fund's  investments,  although there can be no assurance that they
will be.

4

<PAGE>

[PICTURE]

SHAREHOLDER
INFORMATION

DISTRIBUTOR
Fred Alger & Company, Incorporated
30 Montgomery Street
Jersey City, New Jersey 07302

TRANSFER AGENT
Alger Shareholder Services, Inc.
30 Montgomery Street
Jersey City, New Jersey 07302

NET ASSET VALUE
The price of one share is its "net asset  value",  or NAV. The NAV is calculated
as of the close of business  (normally 4:00 p.m. Eastern time) every day the New
York Stock Exchange is open.  Generally,  the Exchange is closed on weekends and
various  national  holidays.  It may close on other days from time to time. 

The Fund generally  values its assets on the basis of market  quotations.  Where
market  quotations  are not readily  available,  the Manager  makes a good faith
determination on the basis of fair value,  under procedures adopted by the Board
of Trustees.

DIVIDENDS AND DISTRIBUTIONS

Dividends  of the Fund's net  investment  income  and  distributions  of its net
realized  capital  gains are  declared and paid  annually by the Fund.  The Fund
expects that these annual  payments to  shareholders  will consist  primarily of
capital gains, which may be taxable to you at different rates depending upon how
long the Fund held the securities  that it sold to create the gains.  Unless you
choose to receive  cash  payments by checking  the  appropriate  box on your New
Account  Application,   any  dividends  and  distributions  will  be  reinvested
automatically  at the NAV on  their  payment  dates.  If you  have  chosen  cash
payments  and a payment is returned to the Fund as  undeliverable,  upon receipt
that payment will be reinvested  in Fund shares at the next NAV. All  subsequent
payments will be reinvested until you reinstate your cash election and provide a
valid mailing address.

Regardless of whether you choose to take  distributions in cash or reinvest them
in the Fund, they may be subject to federal and state taxes.  Because everyone's
tax situation is unique,  see a tax advisor about  federal,  state and local tax
consequences of investing in the Fund.

NAV (NET ASSET  VALUE) IS  COMPUTED BY ADDING  TOGETHER  THE VALUE OF THE FUND'S
INVESTMENTS  PLUS CASH AND OTHER ASSETS,  SUBTRACING  ITS  LIABILITIES  AND THEN
DIVIDING THE RESULT BY THE NUMBER OF ITS OUTSTANDING SHARES.

PURCHASING AND REDEEMING FUND SHARES

No sales  charge is imposed on Fund  shares.  You can purchase or redeem some or
all of your shares on any day the New York Stock Exchange is open.  They will be
processed at the NAV next calculated  after your purchase or redemption  request
is received in good order by the Transfer  Agent.  Ordinarily,  your  redemption
check  will be  issued  within 7 days  after the  Transfer  Agent  accepts  your
redemption  request.  However,  when  you  purchase  shares  with a check or via
TelePurchase or Automatic Investment Plan, no check will be issued against those
funds for 15 days. The Transfer Agent or Fund may reject any purchase order. The
Fund does not impose a sales charge for redemptions.  Different ways to purchase
and redeem are listed on the following  pages.  For telephone  redemptions,  the
Fund and Transfer  Agent have  reasonable  procedures in place to determine that
the instructions are genuine.  They include requesting  personal  identification
and recording  calls.  If the Fund and Transfer  Agent follow these  procedures,
they are not liable for acting in good faith on telephone instructions.

Minimum Investments

                          Initial       Subsequent
                         Investment     Investment
- -------------------------------------------------------------------------------
Regular account            $1,000          $100
Traditional IRA              $250          $100
Roth IRA                     $250          $100
Education IRA                $100          $100
SIMPLE IRA                   $250          $100
Keogh                        $250          $100
401(k)                       $250          $100
403(b)                       $250          $100
Automatic Investment          $25           $25

                                                                               5

<PAGE>

INVESTMENT INSTRUCTIONS 

TO OPEN AN ACCOUNT:

BY MAIL:

- --------------------------------------------------------------------------------
(make checks payable to Spectra Fund) Mail your completed  application and check
to:

      Alger Shareholder Services, Inc.
      30 Montgomery Street
      Jersey City, NJ 07302

By Fed Wire:
- --------------------------------------------------------------------------------
Have your bank wire funds to:
   
INSTRUCTIONS                 EXAMPLE
State Street Bank &          State Street Bank &
  Trust Company                Trust Company
Boston, MA 02101             Boston, MA 02101
ABA#011000028                ABA#011000028
BNF: Spectra                 BFN-Spectra Dund
Ac-00797548                  AC-00797548
Originator To
  Beneficiary Information=  OBI=Spectra Fund
New Account                 New Account*
Shareholder Name (s)        John & Jane Doe
Tax ID Number               123-45-6789
    

Forward the  completed New Account  Application  to Alger  Shareholder  Services
stating  that the  account was  established  by wire  transfer  and the date and
amount of the transfer.

*If you already have an account number assigned to you, insert it here.

Contact:
- --------------------------------------------------------------------------------
Call or visit your investment adviser, or bank or other financial institution.

AUTOMATICALLY:
- --------------------------------------------------------------------------------
Complete  the  Automatic  Investment  Plan option on your  account  application.
Minimum automatic investment is $25. Via The Internet:
- --------------------------------------------------------------------------------
Visit  the  Spectra  Fund  website  to  download  a new  account  application  -
www.spectrafund.com. 

Mail completed  application with your investment to Alger Shareholder  Services,
Inc.

To make additional investments in an existing account:

By Mail:
- --------------------------------------------------------------------------------
Complete and return the Invest by Mail slip  attached to your Spectra  Statement
and return slip with your  investment to: 

     Alger  Shareholder  Services,  Inc.
     30 Montgomery Street
     Jersey City, NJ 07302

By Telephone or Fed Wire:
- --------------------------------------------------------------------------------
TelePurchase*  allows you to purchase shares by telephone (minimum $500, maximum
$50,000) by filling out the appropriate  section of the New Account  Application
or returning the Additional  Services  Form. The funds will be transferred  from
your designated  bank account to your Fund account  normally within one business
day.

Wire - Have your bank wire funds to:

State Street Bank & Trust Company. (See wire instructions at left.)

                                             *NOT AVAILABLE FOR RETIREMENT PLANS

Contact:
- --------------------------------------------------------------------------------
Call or visit your investment adviser, or bank or other financial institution.

Automatically:
- --------------------------------------------------------------------------------
Spectra Fund Automatic Investment Plan allows you to make automatic purchases on
the 15th  and/or  the last  business  day of each  month.  Fill out  appropriate
information on the New Account Application or contact Spectra Fund to receive an
Additional Services Form. Minimum automatic investment is $25.

Government  Direct Deposit* allows you to arrange direct deposit of U.S. federal
government  payments  into your Spectra Fund account and Payroll  Savings  Plan*
allows you to arrange  direct  deposit of a portion of your payroll  directly to
your Spectra Fund Account. Call for a Payroll Savings Plan Form.

                                             *NOT AVAILABLE FOR RETIREMENT PLANS

Via The Internet:
- --------------------------------------------------------------------------------
Visit the Spectra  Fund  website to download  all forms to add  services to your
account - www.spectrafund.com.

Mail your completed forms to Alger Shareholder
Services, Inc.

6

<PAGE>

Redemption Instructions

BY MAIL:
- --------------------------------------------------------------------------------
Send a letter of instruction to Alger Shareholder Services, Inc. which includes

    - your  name 
    -  account  number 
    - number  of  shares  or  dollar  amount  of redemption 
    - where to send the proceeds 
    - a signature  guarantee is required if
         -- your redemption is for more than $5,000; or
         -- you want the check sent to a different  address than the one we have
            on file; or 
         -- you have changed your address on file within the past 60 days.

By Telephone:*
- --------------------------------------------------------------------------------
Call  800-711-6141  to sell shares  (unless you refuse this  service on your New
Account  Application).  The Fund will send you a check for amounts up to $5,000.
You can choose to receive a check or a wire for amounts over $5,000.  Note:  you
cannot  request a check if you have changed your address on file within the past
60 days.

TeleRedemption  allows you to redeem  shares by  telephone  by  filling  out the
appropriate  section of the New Account  Application or returning the Additional
Services  Form.  The funds will be transferred to your bank account in an amount
between $500 and $50,000, normally within 2 business days.

                                             *NOT AVAILABLE FOR RETIREMENT PLANS

Contact:
- --------------------------------------------------------------------------------
Call or visit your investment adviser, or bank or other financial institution.

Automatically:
- --------------------------------------------------------------------------------
Systematic  Withdrawal Plan allows you to receive regular monthly,  quarterly or
annual payments.  Your account value must be at least $10,000,  and the payments
must be for $50 or more.  The maximum  monthly  withdrawal  is 1% of the current
account value in the Fund at the time you begin participation in the Plan.

Via The Internet:
- --------------------------------------------------------------------------------
Visit  the  Spectra  Fund  website  to  download  all  forms  to add  redemption
privileges to your existing account -  www.spectrafund.com. 

Mail your completed forms to Alger Shareholder Services, Inc.

TO SPEAK WITH A SPECTRA FUND REPRESENTATIVE CALL 1-800-711-6141

e-mail: [email protected]

web address: www.spectrafund.com

Representatives are available to assist you with any questions you have.

SIGNATURE  GUARANTEE  IS  A  GUARANTEE  BY A  FINANCIAL  INSTITUTION  THAT  YOUR
SIGNATURE IS AUTHENTIC.  THE  FINANCIAL  INSTITUTION  ACCEPTS  LIABILITY FOR ANY
FORGERY OR FRAUD IF THE SIGNATURE THEY GUARANTEE PROVES TO BE COUNTERFEIT. IT IS
AN IDEAL MEANS TO PROTECT INVESTORS AND THEIR ASSETS. A NOTARIZATION BY A NOTARY
PUBLIC  IS  NOT  AN   ACCEPTABLE   SUBSTITUTE.  

Unless your account is a Spectra-sponsored  tax-deferred  retirement plan, if it
falls below $500 because of  redemptions,  the Fund may send you written  notice
providing 60 days to restore it to the minimum balance.  After 60 days, the Fund
may close your account and redeem all of your shares.

Under unusual circumstances,  the Fund may redeem some of your shares "in kind",
which means that some of the proceeds will be paid with securities the Fund owns
instead of cash.

Shares may be worth more or less when you redeem  them than they are at the time
you buy them.  This means that you may  realize a taxable  gain or loss when you
redeem shares.

EXCHANGES

You can exchange  shares of the Fund for shares of Alger Money Market  Portfolio
of The Alger Fund, another portfolio advised by the manager. If you would like a
prospectus describing the Money Market Portfolio,  please call the Fund at (800)
711-6141. Remember that for tax purposes, an exchange is considered a sale and a
purchase. Thus, you may realize a taxable gain or loss when you exchange shares.

                                                                               7

<PAGE>

Financial Highlights

The Financial  Highlights  table is intended to help you  understand  the Fund's
financial  performance for the past 10 years.  During this 10-year  period,  the
Fund was a closed-end  fund until February 12, 1996,  when it became an open-end
investment company.  Certain information reflects financial results for a single
Fund share.  The total returns in the table  represent the rate that an investor
would have earned or lost on an investment in the Fund (assuming reinvestment of
all dividends and distributions).

The  Financial  Highlights  for the fiscal  periods  ended June 30, 1991 through
October  31,  1998  have  been  audited  by  Arthur  Anderson  LLP,  the  Fund's
independent public accountants.  The Financial Highlights, with the exception of
the total return information, for the periods prior to 1991 have been audited by
other  independent  accountants,  who  have  expressed  an  unqualified  opinion
thereon.  Arthur Andersen LLP's report,  along with the financial  statements of
the Fund,  are  contained  in the Fund's  Annual  Report,  which is available by
contacting the Fund at (800) 711-6141.

For a share outstanding throughout the period
<TABLE>
<CAPTION>
                                                                                              Four
                                                                                            Months
                                                                                             Ended
                                                              Year Ended October 31,       Oct. 31
- --------------------------------------------------------------------------------------------------
                                                  1998     1997         1996         1995     1994(i)
                                                  ----     ----         ----         ----     ----
<S>                                         <C>          <C>          <C>          <C>      <C>   
Net asset value, beginning of year          $    17.21   $13.61       $20.93       $18.82   $17.12
                                            ----------   ------       ------       ------   ------
Net investment income (loss)                      (.06)    (.17)(ii)   (0.23)(ii)   (0.53)   (0.10)
Net realized and unrealized gain (loss)
on investments                                    2.95     3.77         1.22         7.24     1.80
                                            ----------   ------       ------       ------   ------
Total from investment operations                  2.89     3.60         0.99         6.71     1.70
Distributions from net realized gains             (.14)      --        (8.31)       (4.60)      --
                                            ----------   ------       ------       ------   ------
Net asset value, end of year                  $  19.96   $17.21       $13.61       $20.93   $18.82
                                            ==========    =====        =====        =====    =====
Total return(iii)                                16.94%   26.45%       12.68%       57.72%    9.93%
                                            ==========
  Net assets, end of year (000's omitted      $193,039  $84,988      $11,485       $5,374   $4,832
                                            ==========  =======      =======       ======   ======
  Ratio of expenses excluding interest to
    average net assets                            1.90%      --           --           --       --
                                            ==========
  Ratio of expenses including interest to
    average net assets                            1.96%    2.12%        2.55%(iv)    3.76%    2.75%
                                            ==========    =====        =====        =====    =====
  Ratio of net investment income (loss) to
    average net assets                           (1.24)   (1.06)%      (1.69)%      (3.05)%  (1.72)%
                                            ==========    =====        =====        =====    =====
  Portfolio Turnover Rate                       190.74%  133.98%      197.04%      207.25%   56.24%
                                            ==========   ======       ======       ======    =====
  Amount of debt outstanding at end 
    of period                               $  705,000
                                            ==========
  Average amount of debt outstanding
    during the period                       $1,044,096
                                            ==========
  Average daily number of shares 
    outstanding during the period            7,621,764
                                            ==========
  Average amount of debt per share 
    during the period                       $     0.14
                                            ==========
</TABLE>
<TABLE>
<CAPTION>
                                                               Year Ended June 30,
- ----------------------------------------------------------------------------------------------------
                                                1994      1993     1992     1991     1990       1989
                                                ----      ----     ----     ----     ----       ----
<S>                                           <C>       <C>      <C>      <C>      <C>        <C>    
Net asset value, beginning of year            $19.02    $17.93   $19.50   $18.72   $15.12     $13.73
                                              ------    ------   ------   ------   ------     ------
Net investment income (loss)                   (0.28)    (0.29)   (0.22)   (0.15)   (0.13)     (0.19)
Net realized and unrealized gain (loss) 
on investments                                  2.66      3.70     1.65     2.25     3.83       1.66
                                              ------    ------   ------   ------   ------     ------
 Total from investment operations               2.38      3.41     1.43     2.10     3.70       1.47
Distributions from net realized gains          (4.28)    (2.32)   (3.00)   (1.32)   (0.10)     (0.08)
                                              ------    ------   ------   ------   ------     ------
Net asset value, end of year                  $17.12    $19.02   $17.93   $19.50   $18.72     $15.12
                                              ======    ======   ======   ======   ======     ======
Total return(iii)                              17.53%   23.66%    11.65%   15.63%   24.76%(v)  10.96%(v)
                                              ======    ======   ======   ======   ======     ======
Ratios and Supplemental Data:
  Net assets, end of year (000's omitted      $4,394    $4,884   $4,603   $5,006   $4,805     $3,881
                                              ======    ======   ======   ======   ======     ======
  Ratio of expenses excluding interest to
    average net assets                            --        --       --       --       --         --
  Ratio of expenses including interest to
    average net assets                          2.59%     2.57%    2.14%    2.74%    3.01%      4.09%
                                              ======    ======   ======   ======   ======     ======
   Ratio of net investment income (loss) to
    average net assets                         (1.47)%   (1.55)%  (1.07)%  (0.85)%  (0.76)%    (1.35)%
                                              ======    ======   ======   ======   ======     ======
   Portfolio Turnover Rate                    116.61%   100.17%   63.54%   78.00%   81.70%    139.94%
  Amount of debt outstanding at end           ======    ======   ======   ======   ======     ======
    of period
  Average amount of debt outstanding 
    during the period
   Average daily number of shares 
    outstanding during the period
  Average amount of debt per share 
    during the period
</TABLE>
- -------------------------
   
(i)   Ratios have been annualized; total return has not been annualized.
(ii)  Amount was computed based on average shares outstanding during the year.
(iii) Distributions paid when the Fund operated as a closed-end fund (i.e. prior
      to February 12, 1996), have been reflated as being reinvested at market
      value.
(iv)  Amount has been reduced by 0.69% due to expense reimbursements made
      pursuant to applicable state expense limits.
(v)   Unaudited.
    

8
<PAGE>

FOR FUND INFORMATION:
By telephone:     1-800-711-6141

By mail:     Spectra Fund
1 World Trade Center

             Suite 9333
             New York, NY 10048

By Internet: Text versions of Fund documents can be

downloaded from the following sources:

a The Fund: http://www.spectrafund.com
a SEC: http://www.sec.gov

STATEMENT OF ADDITIONAL INFORMATION

For more detailed information about the Fund and its policies,  investments, and
risks,   please  read  the  Statement  of  Additional   Information,   which  is
incorporated by reference into (is legally made a part of) this Prospectus.  You
can get a free copy of the  Statement of Additional  Information  by calling the
Fund's  toll-free  number or by writing to the address  above.  The Statement of
Additional Information is on file with the Securities and Exchange Commission.

ANNUAL AND SEMI-ANNUAL REPORTS

Additional  information about the Fund's  investments is available in the Fund's
annual and semi-annual reports to shareholders.  In the Fund's annual report you
will find a discussion of the market  conditions and investment  strategies that
significantly  affected the Fund's  performance during the period covered by the
report.  You can  receive  free  copies of these  reports by calling  the Fund's
toll-free number or by writing to the address above.

Another way you can obtain  copies of Fund  documents  is by visiting  the SEC's
Public Reference Room or by forwarding your request and a duplicating fee to the
SEC's Public Reference Section,  Washington,  DC 20549-6009.  Information on the
operation of the Public  Reference Room is available by calling  1-800-SEC-0330.


DISTRIBUTOR: FRED ALGER & COMPANY, INCORPORATED SPECTRA FUND SEC FILE #811-1743

<PAGE>

STATEMENT OF
ADDITIONAL INFORMATION                                             March 1, 1999

   
1 World Trade Center--Suite 9333
New York, New York 10048
(800) 711-6141 
    

================================================================================
 This  Statement of Additional  Information  is not a Prospectus.  This document
contains additional  information about Spectra Fund (the "Fund") and supplements
information  in the  Prospectus  dated  February  26,  1999.  It  should be read
together with the Prospectus  which may be obtained free of charge by writing or
calling the Fund at the address or toll-free number shown above.

   The Fund's  financial  statements  for the year ended  October  31,  1998 are
contained in its annual report to shareholders and are incorporated by reference
into this Statement of Additional Information.

                                    CONTENTS

   
Investment Strategies and Policies .................................    2
Net Asset Value ....................................................    9
Purchases and Redemptions ..........................................    9
Management .........................................................   11
Taxes ..............................................................   14
Custodian and Transfer Agent .......................................   14
Diversification ....................................................   15
Certain Shareholders ...............................................   15
Organization .......................................................   15
Determination of Performance .......................................   16
Financial Statements ...............................................   17
Appendix ...........................................................   A-1
    

<PAGE>

INVESTMENT STRATEGIES AND
POLICIES

       
The Prospectus  discusses the investment objective of the Fund and the principal
strategies  to be employed to achieve  this  objective.  This  section  contains
supplemental   information   concerning   the  types  of  securities  and  other
instruments in which the Fund may invest, the investment  policies and portfolio
strategies  that the Fund may  utilize  and  certain  risks  attendant  to those
investments,  policies and strategies.

       

Cash Position
   

In  order  to  afford  the  Fund  the  flexibility  to  take  advantage  of  new
opportunities for investments in accordance with its investment  objective or to
meet  redemptions,  it may,  under normal  circumstances,  hold up to 15% of its
total  assets  in  money  market  instruments  including,  but not  limited  to,
certificates  of deposit,  time  deposits  and  bankers'  acceptances  issued by
domestic  bank and thrift  institutions,  US Government  securities,  commercial
paper and  repurchase  agreements.  When  management's  analysis of economic and
technical  market  factors  suggests  that  common  stock  prices  will  decline
sufficiently that a temporary  defensive position is deemed advisable,  the Fund
may invest in  high-grade  senior  securities or U.S.  Government  securities or
retain cash or cash equivalents, all without limitation.
    

Small Capitalization Investments 

Certain   companies  in  which  the  Fund  will  invest  may  still  be  in  the
developmental  stage,  may be older  companies  that appear to be entering a new
stage of  growth  progress  owing  to  factors  such as  management  changes  or
development of new technology, products or markets or may be companies providing
products or services with a high unit volume growth rate.  Investing in smaller,
newer issuers  generally  involves  greater risk than investing in larger,  more
established  issuers.  Such companies may have limited product lines, markets or
financial  resources and may lack management  depth.  Their  securities may have
limited  marketability  and may be  subject  to more  abrupt or  erratic  market
movements than securities of larger,  more  established  companies or the market
averages in general.

U.S.  Government

Obligations  Bills,  notes,  bonds, and other debt securities issued by the U.S.
Treasury are direct obligations of the U.S.  Government and differ mainly in the
length of their maturities.

Short-term Corporate Debt Securities

These are outstanding  nonconvertible corporate debt securities (e.g., bonds and
debentures)  which have one year or less remaining to maturity.  Corporate notes
may have  fixed,  variable,  or  floating  rates.  

Commercial  Paper 

These are  short-term  promissory  notes  issued by  corporations  primarily  to
finance short-term credit needs.

Repurchase Agreements

Under the terms of a repurchase agreement, the Fund would acquire a high quality
money market instrument for a relatively short period (usually not more than one
week)  subject to an  obligation  of the seller to  repurchase,  and the Fund to
resell, the instrument at an agreed price (including accrued interest) and time,
thereby  determining  the yield  during the Fund's  holding  period.  Repurchase
agreements may be seen to be loans by the Fund  collateralized by the underlying
instrument.  This  arrangement  results  in a fixed  rate of return  that is not
subject  to  market  fluctuations  during  the  Fund's  holding  period  and not
necessarily  related  to the rate of return on the  underlying  instrument.  The
value of the underlying securities, including accrued interest, will be at least
equal at all times to the total amount of the repurchase  obligation,  including
interest.  The Fund bears a risk of loss in the event that the other  party to a
repurchase  agreement declares bankruptcy or defaults on its obligations and the
Fund is delayed in or  prevented  from  exercising  its rights to dispose of the
collateral securities,  including the risk of a possible decline in the value of
the  underlying  securities  during the period in which the Fund seeks to assert
these rights,  the risk of incurring  expenses  associated  with asserting these
rights and the risk of losing all or part of the income from the agreement. Fred
Alger Management, Inc. ("Alger Management"), acting under the supervision of the
Fund's  Board of  Trustees,  reviews  the credit  worthiness  of those banks and
dealers with which the Fund enters into repurchase  agreements to evaluate these
risks and monitors on an ongoing  basis the value of the  securities  subject to
repurchase  agreements  to ensure that the value is  maintained  at the required
level. 

Warrants and Rights 

The Fund may invest in securities  convertible  into or exchangeable  for equity
securities  including  warrants and rights. A warrant is a type of security that
entitles the holder to buy a proportionate amount of common stock at a specified
price,  usually  higher  than the market  price at the time of  issuance,  for a
period of years or to perpetuity. In contrast,  rights, which also represent the
right to buy common shares,  normally have a  subscription  price lower than the
current  market  value  of the  common  stock  and a life of two to four  weeks.
Warrants  are  freely  transferable  and  are  traded  on the  major  securities
exchanges.
   
Portfolio Depositary Receipts

To the extent otherwise  consistent with its investment  policies and applicable
law, the Fund may invest up to 5% of its total  assets in  Portfolio  depositary
Receipts,  exchange-traded shares issued by investment companies, typically unit
investment  trusts,  holding  portfolios of common stocks designed to replicated
and,  therefore,  track the performance of various broad  securities  indexes or
sectors of such indexes.  For example,  the Fund may invest in Standard & Poor's
Depositary  ReceiptsR (SPDRs),  issued by a unit investment trust whose porfolio
tracks the S&P 500 Composite  Stock Price Index, or Standard & Poor's MidCap 400
Depositary  ReceiptsR  (MidCap  SPDRs),  similarly  linked to the S&P Midcap 400
Index.
    
                                      -2-

<PAGE>

       

Illiquid and Restricted  Securities

The  Fund  will  not  invest  more  than  15% of its net  assets  in  "illiquid"
securities,  which include restricted securities,  securities for which there is
no readily available market and repurchase agreements with maturities of greater
than 7 days; however,  restricted securities that are determined by the Board of
Trustees  be liquid are not subject to this  limitation.

The Fund may invest in  restricted  securities  governed  by Rule 144A under the
Securities  Act of 1933.  In adopting  Rule 144A,  the  Securities  and Exchange
Commission specifically stated that restricted securities traded under Rule 144A
may be treated as liquid for purposes of investment  limitations if the board of
trustees  (or the fund's  adviser  acting  subject to the  board's  supervision)
determines  that the securities are in fact liquid.  The Board has delegated its
responsibility to Alger Management to determine the liquidity of each restricted
security  purchased  pursuant to the Rule,  subject to the Board's oversight and
review.  Examples of factors that will be taken into account in  evaluating  the
liquidity of a Rule 144A security, both with respect to the initial purchase and
on an ongoing basis, will include, among others: (1) the frequency of trades and
quotes for the security;  (2) the number of dealers  willing to purchase or sell
the  security  and  the  number  of  other  potential  purchasers;   (3)  dealer
undertakings  to make a  market  in the  security;  and (4)  the  nature  of the
security  and the nature of the  marketplace  trades  (e.g.,  the time needed to
dispose of the security,  the method of soliciting  offers, and the mechanics of
transfer).  If institutional trading in restricted securities were to decline to
limited  levels,  the  liquidity  of the  Fund's  portfolio  could be  adversely
affected.

Short  Sales 

The Fund may sell securities  "short against the box." While a short sale is the
sale of a  security  the Fund does not own,  it is  "against  the box" if at all
times  when the  short  position  is open the Fund  owns an equal  amount of the
securities  or securities  convertible  into, or  exchangeable  without  further
consideration for, securities of the same issue as the securities sold short.

Lending of Portfolio Securities

In order to generate income and to offset expenses,  the Fund may lend portfolio
securities  with a value up to 331/3% of the Fund's total assets,  including all
collateral  for such loans,  less  liabilities  exclusive of the  obligation  to
return such collateral,  to brokers,  dealers and other financial organizations.
The Fund will not lend  securities  to Alger  Management or its  affiliates.  By
lending  its  securities,  the Fund can  increase  its income by  continuing  to
receive  interest or  dividends  on the loaned  securities  as well as by either
investing the cash  collateral in short-term  securities or by earning income in
the form of interest paid by the borrower when U.S.  Government  securities  are
used as collateral.  The Fund will adhere to the following  conditions  whenever
its securities  are loaned:  (a) the Fund must receive at least 100 percent cash
collateral or  equivalent  securities  from the borrower;  (b) the borrower must
increase  this  collateral  whenever the market  value of the loaned  securities
including  accrued  interest  exceeds the value of the collateral;  (c) the Fund
must be able to  terminate  the  loan at any  time;  (d) the Fund  must  receive
reasonable  interest on the loan,  as well as any  dividends,  interest or other
distributions on the loaned securities and any increase in market value; (e) the
Fund may pay only reasonable custodian fees in connection with the loan; and (f)
voting  rights on the  loaned  securities  may pass to the  borrower;  provided,
however, that if a material event adversely affecting the investment occurs, the
Fund's Board of Trustees  must  terminate  the loan and regain the right to vote
the securities.  The Fund bears a risk of loss in the event that the other party
to a stock loan transaction  defaults on its obligations and the Fund is delayed
in or  prevented  from  exercising  its  rights  to  dispose  of the  collateral
including  the  risk  of a  possible  decline  in the  value  of the  collateral
securities during the period in which the Fund seeks to assert these rights, the
risk of incurring  expenses  associated with asserting these rights and the risk
of losing all or a part of the income from the transaction. 

Foreign  Securities

The Fund may  invest  up to 20% of the  value of its  total  assets  in  foreign
securities (not including  American  Depositary  Receipts,  American  Depositary
Shares or U.S.  dollar  denominated  securities  of  foreign  issuers).  Foreign
securities  investments may be affected by changes in currency rates or exchange
control  regulations,  changes in  governmental  administration  or  economic or
monetary  policy (in the United States and abroad) or changed  circumstances  in
dealing  between  nations.  Dividends paid by foreign  issuers may be subject to
withholding  and other  foreign  taxes that may decrease the net return on these
investments as compared to dividends paid to the Fund by domestic  corporations.
There may be less publicly  available  information  about  foreign  issuers than
about  domestic  issuers,  and  foreign  issuers  are  not  subject  to  uniform
accounting,   auditing  and  financial   reporting  standards  and  requirements
comparable to those of domestic issuers.  Securities of some foreign issuers are
less liq-

                                      -3-

<PAGE>

uid and more volatile than securities of comparable domestic issuers and
foreign  brokerage  commissions are generally  higher than in the United States.
Foreign securities markets may also be less liquid, more volatile and subject to
less  government  supervision  than those in the United  States.  Investments in
foreign  countries  could be affected by other factors not present in the United
States,   including   expropriation,   confiscatory   taxation   and   potential
difficulties  in  enforcing  contractual  obligations.  Securities  purchased on
foreign  exchanges may be held in custody by a foreign bank or a foreign  branch
of a domestic bank.

The Fund may purchase American Depositary Receipts ("ADRs"), American Depositary
Shares ("ADSs") or U.S.  dollar-denominated  securities of foreign issuers which
are not  subject to the 20%  foreign  securities  limitation.  ADRs and ADSs are
traded in U.S.  securities  markets  and  represent  the  securities  of foreign
issuers.  While ADRs and ADSs may not  necessarily  be  denominated  in the same
currency as the foreign securities they represent,  many of the risks associated
with foreign securities may also apply to ADRs and ADSs.

Options

The Fund may  purchase  put and call  options and sell  (write)  covered put and
covered call options on securities and securities indexes to increase gain or to
hedge against the risk of unfavorable price movements although,  as in the past,
it does not currently intend to rely on these strategies extensively, if at all.

A call  option on a security  is a contract  that gives the holder of the option
the right to buy from the writer  (seller) of the call  option,  in return for a
premium paid, the security  underlying the option at a specified  exercise price
at any time during the term of the option. The writer of the call option has the
obligation  upon exercise of the option to deliver the underlying  security upon
payment  of the  exercise  price  during the  option  period.  A put option on a
security is a contract that, in return for the premium,  gives the holder of the
option the right to sell to the writer  (seller)  the  underlying  security at a
specified  price  during  the term of the  option.  The  writer of the put,  who
receives the premium,  has the  obligation to buy the  underlying  security upon
exercise at the exercise price during the option period.

   
The Fund will not sell options that are not  covered.  A call option  written by
the Fund on a security is  "covered"  if the Fund owns the  underlying  security
covered by the call or has an  absolute  and  immediate  right to  acquire  that
security  without   additional  cash   consideration  (or  for  additional  cash
consideration held in a segregated account) upon conversion or exchange of other
securities  held in its  portfolio.  A call  option is also  covered if the Fund
holds a call on the same security as the call written  where the exercise  price
of the call  held is (1) equal to or less  than the  exercise  price of the call
written  or (2)  greater  than the  exercise  price of the call  written  if the
difference  is  maintained by the Fund in cash,  U.S.  Government  securities or
other high grade short-term obligations in a segregated account. A put option is
"covered" if the Fund maintains cash or other high grade short-term  obligations
with a value equal to the exercise price in a segregated account or else holds a
put on the same security as the put written where the exercise  price of the put
held is equal to or greater than the exercise price of the put written.
    

If the Fund has written an option,  it may terminate its obligation by effecting
a closing purchase transaction.  This is accomplished by purchasing an option of
the same series as the option  previously  written.  However,  once the Fund has
been  assigned an exercise  notice,  the Fund will be unable to effect a closing
purchase transaction.  Similarly,  if the Fund is the holder of an option it may
liquidate  its  position  by  effecting  a  closing  sale  transaction.  This is
accomplished  by selling an option of the same  series as the option  previously
purchased.  There can be no  assurance  that  either a closing  purchase or sale
transaction can be effected when the Fund so desires.

The Fund will  realize a profit from a closing  transaction  if the price of the
transaction is less than the premium received from writing the option or is more
than the premium paid to purchase the option;  the Fund will realize a loss from
a closing  transaction if the price of the  transaction is less than the premium
paid to  purchase  the  option.  Since  call  option  prices  generally  reflect
increases in the price of the underlying  security,  any loss resulting from the
repurchase of a call option may also be wholly or partially offset by unrealized
appreciation of the underlying  security.  Other principal factors affecting the
market  value of a put or a call  option  include  supply and  demand,  interest
rates, the current market price and price volatility of the underlying  security
and the time remaining until the expiration date.

An option  position  may be closed  out only on an  exchange  which  provides  a
secondary  market  for an  option  of the same  series.  Although  the Fund will
generally not purchase or write options that appear to lack an active  secondary
market, there is no assurance that a liquid secondary market on an exchange will
exist for any  par-

                                      -4-

<PAGE>

ticular  option.  In such  event it might  not be  possible  to  effect  closing
transactions in particular  options, so that the Fund would have to exercise its
option in order to realize any profit and would incur brokerage commissions upon
the exercise of the options.  If the Fund, as a covered call option  writer,  is
unable to effect a closing purchase  transaction in a secondary  market, it will
not be able to sell the  underlying  security  until the  option  expires  or it
delivers the underlying security upon exercise or otherwise covers the position.

In addition to options on  securities,  the Fund may also purchase and sell call
and put options on securities indexes. A stock index reflects in a single number
the market value of many different  stocks.  Relative values are assigned to the
stocks included in an index and the index  fluctuates with changes in the market
values of the stocks.  The  options  give the holder the right to receive a cash
settlement  during the term of the option  based on the  difference  between the
exercise price and the value of the index.  By writing a put or call option on a
securities index, the Fund is obligated,  in return for the premium received, to
make  delivery of this  amount.  The Fund may offset its position in stock index
options  prior to  expiration  by  entering  into a  closing  transaction  on an
exchange or it may let the option expire unexercised.

Use of  options  on  securities  indexes  entails  the risk that  trading in the
options  may be  interrupted  if trading in certain  securities  included in the
index is  interrupted.  The Fund will not purchase  these  options  unless Alger
Management is satisfied with the development,  depth and liquidity of the market
and Alger Management believes the options can be closed out.

Price  movements  in the Fund's  securities  may not  correlate  precisely  with
movements in the level of an index and, therefore, the use of options on indexes
cannot  serve as a complete  hedge and will depend,  in part,  on the ability of
Alger  Management to predict  correctly  movements in the direction of the stock
market  generally or of a particular  industry.  Because  options on  securities
indexes require  settlement in cash, Alger Management may be forced to liquidate
portfolio securities to meet settlement obligations.

Although Alger Management will attempt to take appropriate  measures to minimize
the risks relating to any trading by the Fund in put and call options, there can
be no  assurance  that the Fund will  succeed in any option  trading  program it
undertakes.

The Fund will not purchase  options if, as a result,  the aggregate  cost of all
outstanding  options  exceeds 10% of the Fund's total  assets,  although no more
than  5%  will  be  committed  to  transactions  entered  into  for  non-hedging
(speculative) purposes.

Stock Index Futures and Options on Stock Index Futures

Futures are generally  bought and sold on the  commodities  exchanges where they
are listed with payment of initial and variation  margin as described below. The
sale of a futures contract creates a firm obligation by the Fund, as seller,  to
deliver  to the  buyer  the net cash  amount  called  for in the  contract  at a
specific  future  time.  Put options on futures  might be  purchased  to protect
against  declines in the market values of securities  occasioned by a decline in
stock prices and  securities  index futures  might be sold to protect  against a
general  decline in the value of securities of the type that comprise the index.
Options on futures contracts are similar to options on securities except that an
option on a futures  contract  gives the  purchaser  the right in return for the
premium paid to assume a position in a futures contract and obligates the seller
to deliver such position.

A stock index future obligates the seller to deliver (and the purchaser to take)
an amount of cash equal to a specific dollar amount times the difference between
the value of a specific  stock index at the close of the last trading day of the
contract and the price at which the agreement is made.  No physical  delivery of
the underlying  stocks in the index is made.  While incidental to its securities
activities,  the Fund may use index  futures as a  substitute  for a  comparable
market position in the underlying securities.

If the Fund uses futures, or options thereon, for hedging, the risk of imperfect
correlation increases as the composition of the Fund varies from the composition
of the stock index. In an effort to compensate for the imperfect  correlation of
movements in the price of the securities being hedged and movements in the price
of the stock index futures, the Fund may, if it uses a hedging strategy,  buy or
sell stock index futures contracts in a greater or lesser dollar amount than the
dollar amount of the securities being hedged if the historical volatility of the
stock index futures has been less or greater than that of the  securities.  Such
"over hedging" or "under hedging" may adversely affect the Fund's net investment
results  if  market   movements  are  not  as  anticipated  when  the  hedge  is
established.

An option on a stock  index  futures  contract,  as  contrasted  with the direct
investment in such a contract,  gives the purchaser the right, in return for the
premium  paid,  to assume a position  in a stock  index  futures  contract  at a
specified exercise price at any time prior to the expiration date of the option.
The Fund will sell

                                      -5-

<PAGE>

options  on stock  index  futures  contracts  only as part of  closing  purchase
transactions to terminate its options positions.  No assurance can be given that
such  closing  transactions  can be effected  or that there will be  correlation
between  price  movements  in the  options  on stock  index  futures  and  price
movements  in the Fund's  securities  which are the  subject  of the  hedge.  In
addition,  the Fund's purchase of such options will be based upon predictions as
to anticipated market trends, which could prove to be inaccurate.

The Fund's use, if any, of stock index  futures and options  thereon will in all
cases be consistent with applicable  regulatory  requirements  and in particular
the rules and regulations of the Commodity  Futures Trading  Commission and will
be entered into only, if at all, for bona fide hedging, risk management or other
portfolio  management  purposes.  Typically,  maintaining a futures  contract or
selling an option  thereon  will  require  the Fund to deposit  with a financial
intermediary  as  security  for its  obligations  an  amount  of  cash or  other
specified  assets (initial margin) which initially is typically 1% to 10% of the
face  amount  of  the  contract  (but  may be  higher  in  some  circumstances).
Additional  cash or assets  (variation  margin) may be required to be  deposited
thereafter  on a  daily  basis  as the  mark to  market  value  of the  contract
fluctuates. The purchase of an option on stock index futures involves payment of
a premium for the option without any further obligation on the part of the Fund.
If the Fund  exercises  an option on a futures  contract it will be obligated to
post  initial  margin  (and  potential  subsequent  variation  margin)  for  the
resulting futures position just as it would for any position.  Futures contracts
and  options  thereon  are  generally  settled by  entering  into an  offsetting
transaction but there can be no assurance either that the position can be offset
prior to settlement at an  advantageous  price,  or that delivery will occur. In
order  to cover  its  potential  obligations  if the Fund  enters  into  futures
contracts or options thereon,  the Fund will maintain a segregated account which
will contain only liquid  assets in an amount equal to the total market value of
such  futures  contracts  less the amount of initial  margin on deposit for such
contracts.

The Fund will not enter into a futures  contract or related  option  (except for
closing transactions) if, immediately  thereafter,  the sum of the amount of its
initial margin and premiums on open futures  contracts and options thereon would
exceed 5% of the Fund's total assets (taken at current value);  however,  in the
case of an  option  that  is  in-the-money  at the  time  of the  purchase,  the
in-the-money amount may be excluded in calculating the 5% limitation.

Borrowing

   
The  Fund  may  borrow  money  from  banks  and  use it to  purchase  additional
securities.  This  borrowing is known as leveraging.  Leveraging  increases both
investment   opportunity  and  investment  risk.  If  the  investment  gains  on
securities purchased with borrowed money exceed the cost of borrowing, including
interest  paid on the  borrowing,  the net asset value of the Fund's shares will
rise  faster  than  would  otherwise  be the  case.  On the other  hand,  if the
investment gains fail to cover the cost (including  interest) of borrowings,  or
if there are  losses,  the net asset value of the Fund's  shares  will  decrease
faster than would otherwise be the case. The Fund may also borrow from banks for
temporary or  emergency  purposes.  The Fund is required to maintain  continuous
asset coverage (that is, total assets  including  borrowings,  less  liabilities
exclusive of borrowings) of 300% of the amount borrowed.  If such asset coverage
should decline below 300% 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.
    

Investment Restrictions

Under  the  Investment   Company  Act  of  1940,  as  amended  (the  "Act"),   a
"fundamental"  policy may not be changed  without the vote of a "majority of the
outstanding  voting  securities" of the Fund, which is defined in the Act as the
lesser of (a) 67 percent or more of the shares  present at a Fund meeting if the
holders  of more  than 50  percent  of the  outstanding  shares  of the Fund are
present or represented  by proxy or (b) more than 50 percent of the  outstanding
shares.   The  Fund's   investment   objective  is  a  fundamental   policy.   A
"nonfundamental policy" may be changed by vote of a majority of the Fund's Board
of Trustees at any time.

As a matter of fundamental policy, the Fund may not:

1. Issue senior  securities,  except in connection with borrowings  permitted in
restriction 4 and except that the writing of covered  options on securities  and
stock  indexes,  and  transactions  in stock index futures and options  thereon,
shall not be deemed to be the issuance of a senior security.

2. Purchase securities on margin; but it may obtain such short-term credits from
banks  as may  be  necessary  for  the  clearance  of  purchases  and  sales  of
securities.

                                      -6-

<PAGE>

3. Make short sales of securities or maintain a short  position  unless,  at all
times when a short position is open, it owns an equal amount of such  securities
or owns securities  convertible into or exchangeable for, without payment of any
further consideration, securities of the same issuer at least equal in amount to
the securities sold short.

4. Borrow  money,  except  that the Fund may borrow  from banks if,  immediately
after such  borrowing the value of the total assets of the Fund  (including  the
amount  borrowed) less its liabilities (not including any borrowing) is at least
300% of the amount of the borrowings.

5. Pledge,  mortgage,  hypothecate  or otherwise  encumber its assets  except in
connection with permissible borrowings or investments.

6. Act as a securities underwriter, or act as a distributor of securities issued
by it except through an underwriter,  acting as principal or agent,  who may not
be obligated to sell or take up any specific  amount of securities,  except that
the Fund might be deemed an  underwriter  within the meaning of Section 2(11) of
the Securities  Act of 1933 in making sales of securities  not registered  under
Federal Securities law.

7. Participate on a  joint  or joint and several basis in any securities trading
account.

8. Make any investment in a particular industry if, immediately after the making
of such investment,  25% or more of the Fund's total assets would be invested in
such industry.

9. Purchase or sell real estate or interests  therein or real estate  mortgages,
provided  that  the Fund  may  purchase  marketable  securities  of real  estate
investment trusts.

10. Purchase or sell commodities or commodity contracts,  nor invest in oil, gas
or other mineral  exploration  development  programs,  including mineral leases,
except  that the Fund may  purchase or sell stock index  futures  contracts  and
related options thereon if, thereafter,  no more than 5% of its total assets are
invested in margin and premiums.

11. Make loans to others,  except through purchasing qualified debt obligations,
lending its  securities or entering  into  repurchase  agreements. 

12. Make any investment in warrants or rights if,  immediately  after the making
of such  investment,  more than 5% of the Fund's net assets would be so invested
or more than 2% of the Fund's net  assets  would be  invested  in  warrants  not
listed on a recognized domestic stock exchange, provided, however, that warrants
or rights  which are  attached  to other  securities  shall be deemed to have no
value for purposes hereof.

13. Purchase or retain the securities of any issuer, if, to the knowledge of the
Treasurer of the Fund,  those  officers and directors of the Fund or the Adviser
owning  individually  more  than  1/2 of 1% of the  securities  of  such  issuer
together own more than 5% of the securities of such issuer.

14. Purchase any security if, as a result, the Fund would then have more than 5%
of its total assets invested in securities of issuers  (including  predecessors)
that  have  been in  continuous  operation  for  less  than  three  years.  This
limitation shall not apply to investments in obligations issued or guaranteed by
the U.S. Government, its agencies or instrumentalities.

15. Purchase the securities of any other investment company,  except that it may
make such a purchase in the open market  involving no  commission or profit to a
sponsor or dealer (other than the customary broker's commission),  provided that
not more than 5% of the Fund's  total assets  (taken at market or other  current
value) would be invested in such securities  immediately after the making of any
such  investment,  or the Fund may make  such a  purchase  as part of a  merger,
consolidation  or  acquisition  of assets. 

16. The Fund may purchase  and sell  (write) put and call options on  securities
and stock indexes,  but only if such options are exchange-traded or traded on an
automated  quotation  system of a  national  securities  association;  provided,
however, that options on securities written by the Fund must be covered.

The following restriction is nonfundamental:

17.  The Fund may not  invest  more  than 15% of its net  assets  in  repurchase
agreements  which have a maturity of longer than seven days or in other illiquid
securities, including securities that are illiquid by virtue of the absence of a
readily available market or legal or contractual restrictions on resale.

Except in the case of the 300%  limitation  set forth in Investment  Restriction
No. 4, the percentage  limitations contained in the foregoing restrictions apply
at

                                      -7-

<PAGE>

the time of the purchase of the  securities  and a later increase or decrease in
percentage  resulting  from a change in the values of the  securities  or in the
amount of the Fund's assets will not constitute a violation of the restriction.

Portfolio Transactions

Decisions to buy and sell  securities and other  financial  instruments  for the
Fund are made by Alger  Management,  which also is responsible for placing these
transactions,  subject to the overall  review of the Fund's  Board of  Trustees.
Although  investment  requirements for the Fund are reviewed  independently from
those of the other accounts managed by Alger Management, investments of the type
the Fund may make may also be made by these  other  accounts.  When the Fund and
one or more other  accounts  managed by Alger  Management are prepared to invest
in, or desire to dispose of, the same  security or other  financial  instrument,
available  investments or opportunities  for sales will be allocated in a manner
believed by Alger  Management  to be  equitable  to each.  In some  cases,  this
procedure  may affect  adversely  the price paid or  received by the Fund or the
size of the position obtained or disposed of by the Fund.

Transactions  in equity  securities  are in many cases  effected  on U.S.  stock
exchanges and involve the payment of negotiated brokerage commissions.  There is
generally  no  stated  commission  in  the  case  of  securities  traded  in the
over-the-counter markets, but the prices of those securities include undisclosed
commissions  or mark-ups.  Purchases and sales of money market  instruments  and
debt  securities  usually  are  principal  transactions.  These  securities  are
normally  purchased  directly from the issuer or from an  underwriter  or market
maker for the  securities.  The cost of securities  purchased from  underwriters
includes  an  underwriting  commission  or  concession  and the  prices at which
securities are purchased from and sold to dealers include a dealer's  mark-up or
mark-down.  U.S. Government securities are generally purchased from underwriters
or dealers,  although certain  newly-issued  U.S.  Government  securities may be
purchased  directly  from  the  U.S.  Treasury  or from the  issuing  agency  or
instrumentality.

To the extent consistent with applicable provisions of the Act and the rules and
exemptions  adopted  by the  Securities  and  Exchange  Commission  (the  "SEC")
thereunder,  as well as  other  regulatory  requirements,  the  Fund's  Board of
Trustees has determined  that portfolio  transactions  will be executed  through
Fred Alger & Company,  Incorporated  ("Alger Inc.") if, in the judgment of Alger
Management,  the use of Alger Inc. is likely to result in price and execution at
least  as  favorable  as  those of other  qualified  broker-dealers  and if,  in
particular transactions, Alger Inc. charges the Fund a rate consistent with that
charged  to   comparable   unaffiliated   customers  in  similar   transactions.
Over-the-counter  purchases and sales are  transacted  directly  with  principal
market makers except in those cases in which better prices and executions may be
obtained elsewhere.  Principal transactions are not entered into with affiliates
of the Fund except pursuant to exemptive rules or orders adopted by the SEC.

   
In  selecting  brokers  or  dealers to  execute  portfolio  transactions,  Alger
Management seeks the best overall terms available. In assessing the best overall
terms available for any transaction,  Alger Management will consider the factors
it deems relevant,  including the breadth of the market in the  investment,  the
price of the investment, the financial condition and execution capability of the
broker or dealer  and the  reasonableness  of the  commission,  if any,  for the
specific transaction and on a continuing basis. In addition, Alger Management is
authorized,  in  selecting  parties to execute a particular  transaction  and in
evaluating  the best overall  terms  available,  to consider the  brokerage  and
research services, as those terms are defined in section 28(e) of the Securities
Exchange Act of 1934,  provided to the Fund and/or the other accounts over which
Alger Management or its affiliates exercise investment discretion. The Fund will
consider sales of its shares as a factor in the selection of  broker-dealers  to
execute over-the-counter transactions, subject to the requirements of best price
and execution.  Alger  Management's  fees under its agreements with the Fund are
not reduced by reason of its  receiving  brokerage  and  research  service.  The
Fund's Board of Trustees will  periodically  review the commissions  paid by the
Fund to determine if the commissions  paid over  representative  periods of time
are  reasonable  in relation  to the  benefits  inuring to the Fund.  During the
fiscal years ended October 31, 1998, October 31, 1997, and October 31, 1996, the
Fund paid an  aggregate  of  approximately  $569,102,  $128,857,  and $19,091 in
brokerage commissions,  of which approximately  $562,849,  $127,576 and $17,275,
respectively,  was paid to Alger  Inc.  Commissions  paid  during the year ended
October  31,  1996  were  significantly  less than in the  succeeding  two years
because of the large cash flows into the Fund in 1997 and 1998. The  commissions
paid to Alger Inc. during the fiscal year ended October 31, 1998 constituted 99%
of the aggregate  brokerage  commissions paid by the Fund; during that year, 99%
of the aggregate dollar amount of transactions by the Fund involv-
    

                                      -8-

<PAGE>

ing the payment of brokerage  commissions was effected  through Alger Inc. Alger
Inc. does not engage in principal  transactions with the Fund and,  accordingly,
received no compensation in connection with securities purchased or sold in that
manner, which include securities traded in the over-the-counter  markets,  money
market investments and most debt securities.

NET ASSET VALUE
       

The New York Stock  Exchange  ("NYSE") is generally  open on each Monday through
Friday,  except (i) New Year's Day, Dr. Martin Luther King, Jr. Day, Presidents'
Day (the third Monday in February),  Good Friday,  Memorial Day (the last Monday
in  May),   Independence  Day,  Labor  Day  (the  first  Monday  in  September),
Thanksgiving Day (the fourth Thursday in November) and Christmas Day.

The assets of the Fund are generally  valued on the basis of market  quotations.
Securities whose principal  market is on an exchange or in the  over-the-counter
market  are  valued at the last  reported  sales  price or,  in the  absence  of
reported  sales,  at the mean between the bid and asked price or, in the absence
of a recent bid or asked price,  the  equivalent as obtained from one or more of
the major market makers for the  securities to be valued.  Bonds and other fixed
income  securities  may be valued on the basis of prices  provided  by a pricing
service when the Fund's Board of Trustees believes that these prices reflect the
fair  market  value of the  securities.  Other  investments  and  other  assets,
including  restricted  securities and securities for which market quotations are
not readily available, are valued at fair value under procedures approved by the
Fund's Board of Trustees.  Short-term  securities  with maturities of 60 days or
less are valued at amortized cost, which constitutes fair value as determined by
the Fund's Board of Trustees.

PURCHASES AND REDEMPTIONS

Shares of the Fund are offered continuously by the Fund and are distributed on a
best efforts basis by Alger Inc. as principal  underwriter for the Fund pursuant
to  a  distribution   agreement  (the  "Distribution   Agreement").   Under  the
Distribution  Agreement,  Alger Inc. bears all selling  expenses,  including the
costs of  advertising  and of printing  prospectuses  and  distributing  them to
prospective shareholders.  Each of the officers of the Fund and Messrs. David D.
Alger and Fred M. Alger III, Trustees of the Fund, are "affiliated  persons," as
defined in the Act, of the Fund and of Alger Inc.

   
The right of  redemption  of shares of the Fund may be  suspended or the date of
payment  postponed for more than seven days (a) for any periods during which the
New York Stock Exchange is closed (other than for customary  weekend and holiday
closings),  (b) when  trading  in the  markets  the Fund  normally  utilizes  is
restricted, or an emergency, as defined by the rules and regulations of the SEC,
exists,  making disposal of the Fund's  investments or  determination of its net
asset value not reasonably  practicable or (c) for such other periods as the SEC
by order may permit for protection of the Fund's shareholders.

No interest  will accrue on amounts  represented  by  uncashed  distribution  or
redemption checks.
    

Purchases Through Processing Organizations

You  can  buy  shares   through  a   "Processing   Organization",   which  is  a
broker-dealer, bank or other financial institution that purchases shares for its
customers.  When shares are  purchased  this way, the  Processing  Organization,
rather  than its  customer,  may be the  shareholder  of record  of the  shares.
Processing  Organizations  may impose charges and restrictions in addition to or
different from those applicable if you invest with the Fund directly. Therefore,
you  should  read the  materials  provided  by the  Processing  Organization  in
conjunction with the Prospectus.  Certain  Processing  Organizations may receive
compensation from the Fund, Alger Inc., or any of its affiliates.

Automatic Investment Plan

Deductions  can be made from your bank  account  on the  fifteenth  and/or  last
business  day of each  month.  If the  fifteenth  falls on a  weekend  or a NYSE
holiday,  the  deduction  shall be made on the next  business  day.  In order to
participate,  your  account  must be held by a bank  which  is a  member  of the
Automated  Clearing  House.

   
While  there  is no  charge  to  shareholders  for this  service,  a fee will be
deducted from a shareholder's Fund account in the case of insufficient  funds. A
shareholder's  Automatic  Investment  Plan may be terminated at any time without
charge or penalty by the shareholder, the Fund, the Transfer Agent or Alger Inc.
    

TelePurchase and TeleRedemption

You can apply for  TelePurchase  or  TeleRedemption  by  completing  a Telephone
Services  Form and  returning  it to the  Transfer  Agent.  Although the Fund is
authorized to charge a fee of $17 for each automated  Clearing House redemption,
it does not currently intend to do so. To use these  privileges,  your bank must
be a  member  of the  automated  Clearing  House.  Shares held

                                      -9-

<PAGE>

in any Spectra  retirement  plan and shares issued in  certificate  form are not
eligible for this service.

       
Signature Guarantees 

The Transfer Agent will accept a signature  guarantee by the following financial
institutions:  a U.S. bank, trust company,  broker, dealer, municipal securities
broker or dealer,  government securities broker or dealer, credit union which is
authorized  to  provide  signature  guarantees,  national  securities  exchange,
registered securities association or clearing agency.

Selling Shares by Telephone

The Fund, the transfer  agent and their  affiliates are not liable for acting in
good faith on telephone  instructions  relating to your account, so long as they
follow  reasonable  procedures to determine that the telephone  instructions are
genuine. Such procedures may include recording the telephone calls and requiring
some  form of  personal  identification.  You  should  verify  the  accuracy  of
telephone transactions immediately upon receipt of your confirmation statement.

Redemption  requests  generally  will be paid on the  next  business  day.  This
service is not available within 60 days of changing your address or bank account
of record.

Exchange Privilege

Shareholders  may  exchange  shares of the Fund for shares of Alger Money Market
Portfolio of the Alger Fund (the  "Portfolio"),  another  mutual fund managed by
Alger  Management.  Portfolio  shares acquired in such exchanges,  together with
portfolio shares acquired through  reinvestment of dividends on such shares, may
be exchanged  for shares of the Fund.  These  sxchanges  will be effected at the
respective net asset values of the Fund and Portfolio next determined  after the
exchange  request is accepted,  with no sales charge or transaction fee imposed.
Shares of the portfolio received in an exchange will earn dividends beginning on
the next  business day after the  exchange.  Before  exchanging  fund shares for
portfolio shares, an investor should carefully read a prospectus  describing the
portfolio.  To obtain a prospectus for the Alger Fund and more information about
such  exchanges,  please call (800)  711-6141.  The Fund  reserves  the right to
terminate,  or modify this exchange  privilege or to charge a  per-exchange  fee
upon notice to shareholders.  For tax purposes, an exchange of shares is treated
as a sale of the shares  exchanged  and therefore you may realize a taxable gain
or loss when you exchange shares.

Systematic Withdrawal Plan

A  systematic   withdrawal  plan  (the   "Withdrawal   Plan")  is  available  to
shareholders  who own shares of the Fund with a value exceeding  $10,000 and who
wish to receive specific amounts of cash  periodically.  Withdrawals of at least
$50 monthly (but no more than one percent of the value of a shareholder's shares
in the Fund) may be made under the  Withdrawal  Plan by redeeming as many shares
of the Fund as may be necessary to cover the stipulated  withdrawal  payment. To
the extent that withdrawals exceed dividends,  distributions and appreciation of
a shareholder's  investment in the Fund,  there will be a reduction in the value
of the shareholder's investment and continued withdrawal payments may reduce the
shareholder's  investment and ultimately exhaust it. Withdrawal  payments should
not be considered as income from investment in a Fund.

Shareholders  who wish to participate in the Withdrawal  Plan and who hold their
shares in  certificated  form must deposit their share  certificates of the Fund
from which  withdrawals will be made with Alger Shareholder  Services,  Inc., as
agent for Withdrawal Plan members.  All dividends and distributions on shares in
the  Withdrawal  Plan  are  automatically  reinvested  at  net  asset  value  in
additional  shares  of  the  Fund.  For  additional  information  regarding  the
Withdrawal Plan, contact the Fund.

       
Redemptions in Kind

Payment for shares tendered for redemption is ordinarily made in cash.  However,
if the Board of Trustees of the Fund  determines that it would be detrimental to
the best interest of the remaining shareholders of the Fund to make payment of a
redemption  order  wholly  or partly  in cash,  the Fund may pay the  redemption
proceeds in whole or in part by a distribution  "in kind" of securities from the
Fund, in lieu of cash, in conformity with applicable  rules of the SEC. The Fund
has elected to be  governed  by Rule 18f-1 under the Act,  pursuant to which the
Fund is obligated to redeem  shares  solely in cash up to the lesser of $250,000
or 1% of the net  assets  of the  Fund  during  any  90-day  period  for any one
shareholder.  If shares are redeemed in kind,  the redeeming  shareholder  might
incur brokerage or other costs in selling the securities for cash. The method of
valuing  securities  used to make  redemptions  in kind  will be the same as the
method the Fund uses to value its portfolio  securities  and such valuation will
be made as of the time the redemption price is determined.

                                      -10-

<PAGE>

MANAGEMENT

Trustees and Officers of the Fund

   
The Fund is governed by a Board of Trustees which is responsible  for protecting
the interests of shareholders under Massachusetts law. The names of the Trustees
and officers of the Fund,  together with information  concerning their principal
business occupations,  and compensation during the fiscal year ended October 31,
1998 are set forth  below.  Each of the officers of the Fund is also an officer,
and each of the  Trustees is also a Director or Trustee,  as the case may be, of
Castle Convertible Fund, Inc., a registered  closed-end  investment company, and
The  Alger  Fund,  The  Alger  American  Fund  and The  Alger  Retirement  Fund,
registered  open-end  management  investment  companies,  for all of which Alger
Management  serves as investment  adviser.  Fred M. Alger III and David D. Alger
are  "interested  persons" of the Fund, as defined in the Act. Fred M. Alger III
and David D. Alger are brothers.  Unless  otherwise  noted,  the address of each
person  named below is 1 World Trade  Center,  Suite  9333,  New York,  New York
10048.
    

                                      -11-

<PAGE>

<TABLE>
<CAPTION>
Name, Age, Position with
the Fund and Address                   Principal Occupations

<S>                                    <C>
Fred M. Alger III (64)                 Chairman of the Boards of Alger Associates, Inc. ("Associates"), Alger Inc.,
   Chairman of the Board               Alger Management, Alger Properties, Inc. ("Properties"), Alger Shareholder
                                       Services, Inc. ("Services"), Alger Life Insurance Agency, Inc. ("Agency"), 
                                       The Alger American Asset Growth Fund ("Asset Growth"), Fred Alger International Advisory 
                                       S.A. ("International"), and Analysts Resources, Inc. ("ARI").

David D. Alger (55)                    President and Director of Associates, Alger Management, Alger Inc.,
   President and Trustee               Properties, Services, International and Agency; Executive Vice President and
                                       Director of ARI; Director of Asset Growth.

Gregory S. Duch (47)                   Executive Vice President, Treasurer and Director of Alger Management,
   Treasurer                           Associates and Properties; Executive Vice President and Treasurer of Alger Inc.,
                                       ARI, Services and Agency; Treasurer and Director of International.

Mary E.  Marsden-Cochran  (46)         General Counsel, Vice President and Secretary of Associates, Alger  
   Secretary                           Management, Alger Inc., Properties, ARI, Services, and Agency (2/96-present;
                                       Secretary of International (7/97-present);  Associate  General Counsel and Vice President,
                                       Smith Barney Inc. (12/94-2/96); Blue Sky Attorney, AMT Capital (1/94-11/94).

Frederick A. Blum (45)                 Senior Vice President of Alger Inc.
    Assistant Secretary
    and Assistant Treasurer

Arthur M. Dubow (65)                   Trustee of The Arthur Dubow  Foundation;  private  investor since 1985;  
   Trustee                             Director of Coolidge Investment Corporation; formerly Chairman of the 
   P.O.  Box 969                       Board of  Institutional  Shareholder  Services, Inc; formerly President of 
   Wainscott, NY 11975                 Fourth Estate, Inc.

Stephen E. O'Neil (66)                 Of Counsel to the law firm of Kohler & Barnes PC; private investor since 
   Trustee                             1981;  Director of NovaCare, Inc. and Brown-Forman Distillers Corpora-
   805 Third Avenue                    tion; formerly President and Vice Chairman of City Investing Company  
   New  York,  NY 10022                and Director of Centerre Bancorporation and Syntro Corporation.

Nathan E. Saint-Amand, M.D. (61)       Medical doctor in private practice.
   Trustee
   2 East 88th Street
   New York, NY 10128

John T. Sargent (74)                   Private investor since 1987; Director of Atlantic Mutual Insurance Co.;
   Trustee                             formerly Director of River Bank America.
   14 E. 69th Street
   New York, NY 10021

   
B. Joseph White (53)                   Dean, University of Michigan Business School; President, William Davidson
   Trustee                             Institute at the University of Michigan Business School; Professor of
   University of Michigan              Business Administration, University of Michigan Business School;
   Business School                     Director, Gordon Food Service; Trustee and Chair, Audit Committee,
   701 Tappan Street                   Equity Residential Properties Trust; Director and Chair, Compensation
   Ann Arbor, MI 48109                 Committee, Kelly Services, Inc.
    

</TABLE>

   
No director,  officer or employee of Alger Management or its affiliates receives
any compensation from the Fund for serving as an officer or Trustee of the Fund.
For the fiscal year ended  October 31,  1998,  the Fund paid each Trustee who is
not a director,  officer or employee of Alger  Management  or its  affiliates an
annual fee of $250.  Beginning in fiscal 1999, each independent  Trustee will be
paid $2,000 for each meeting he attends, to a maximum of $8,000.

The Fund did not offer its Trustees any pension or retirement benefits during or
prior to the fiscal year ended October 31, 1998.  The following  table  provides
compensation  amounts paid to disinterested  Trustees of the Fund for the fiscal
year ended October 31, 1998. Mr. White, now a disinterested  Trustee,  was not a
Trustee of the Fund during that period.
    

                                      -12-

<PAGE>

<TABLE>
<CAPTION>
                               COMPENSATION TABLE

                                                                       TOTAL COMPENSATION PAID TO TRUSTEES FROM
                                                                              THE ALGER RETIREMENT FUND,
                                                AGGREGATE                           THE ALGER FUND,
                                              COMPENSATION                     THE ALGER AMERICAN FUND,
                                                  FROM                    CASTLE CONVERTIBLE FUND, INC. AND
       NAME OF PERSON, POSITION               SPECTRA FUND                           SPECTRA FUND
       ------------------------            ------------------           ---------------------------------------
<S>                                                <C>                                  <C>    
   
       Arthur M. Dubow, Trustee                    $250                                 $28,250
       Stephen E. O'Neil, Trustee                  $250                                 $28,250
       Nathan E. Saint-Amand, Trustee              $250                                 $28,250
       John T. Sargent, Trustee                    $250                                 $21,250
    

</TABLE>

       
Investment Manager

   
Alger Management serves as investment  manager to the Fund pursuant to a written
agreement (the "Management Agreement"),  subject to the supervision of the Board
of Trustees.  The services  provided by Alger  Management  under the  Management
Agreement  include:   providing  administrative   services,   making  investment
decisions for the Fund, placing orders to purchase and sell securities on behalf
of the Fund, and selecting broker-dealers that, in its judgment,  provide prompt
and reliable  execution at favorable prices and reasonable  commission rates. It
is  anticipated  that Alger Inc.  will serve as the Fund's  broker in  effecting
substantially  all of the Fund's  transactions on securities  exchanges and will
retain commissions in accordance with certain  regulations of the Securities and
Exchange Commission.  Alger Management employs professional  securities analysts
who provide  research  services  exclusively  to the Fund and other accounts for
which  Alger  Management  or its  affiliates  serve  as  investment  adviser  or
subadviser.
    

Alger  Management  is  owned  by  Alger  Inc.  which  in turn is  owned by Alger
Associates,  Inc. ("Associates"),  a financial services holding company. Fred M.
Alger III and his  brother,  David D. Alger,  are the majority  shareholders  of
Associates and maybe deemed to control that company and its subsidiaries.

Alger  Management  pays the salaries of all officers who are employed by both it
and the Fund. Alger Management has agreed to maintain office  facilities for the
Fund, furnish the Fund with statistical and research data, clerical,  accounting
and bookkeeping  services,  and certain other services required by the Fund, and
to compute the net asset value,  net income and realized capital gains or losses
of the Fund.  Alger  Management  prepares  semi-annual  reports  for the SEC and
shareholders,  prepares  federal and state tax  returns  and filings  with state
securities commissions,  maintains the Fund's financial accounts and records and
generally  assists in all  aspects of the Fund's  operations.  Alger  Management
bears all expenses in connection  with the performance of its services under the
Management Agreement.

   
Prior to February 12, 1996, Alger Management  received no management fee but was
reimbursed  for  its  expenses  by the  Fund.  On  February  12,  1996,  the new
Management  Agreement  became  effective  which  provides  for the payment of an
investment  management  fee based upon the value of the average daily net assets
of the Fund.  During the fiscal years ended October 31, 1998,  October 31, 1997,
and October  31,  1996,  Alger  Management  received  $2,172,536,  $573,068  and
$99,209,  respectively,  from the Fund under  these  arrangements.  For the year
ended  October  31,  1996,  the  Fund  was  reimbursed  for  expenses  exceeding
applicable  state  expense  limitations  by Alger  management  in the  amount of
$44,547. Alger Management's fee is computed daily and paid monthly.
    

Shareholder Servicing Agreement

   
Under a Shareholder Servicing Agreement,  the Fund pays Alger Inc. a shareholder
servicing  fee of .25% of the value of the Fund's  average  daily net assets for
service and maintenance of shareholder accounts. Alger Inc. may pay some of this
fee  to  other  organizations  that  also  provide   shareholder   services  and
maintenance of shareholder  accounts.  Payments under the Shareholder  Servicing
Agreement  are  not  tied  exclusively  to the  shareholder  servicing  expenses
actually  incurred by Alger Inc. and the payments may exceed  expenses  actually
incurred   by  Alger  Inc.   The  Fund's   Board  of  Trustees   evaluates   the
appropriateness of the Shareholder  Servicing Agreement and its payment terms on
a periodic  basis and in doing so  considers  all  relevant  factors,  including
expenses borne by Alger Inc. and the amounts it receives  under the  Shareholder
Servicing  Agreement.  During the fiscal year ended  October 31, 1998,  the Fund
paid Alger Inc. $362,089 under the Shareholder Servicing Agreement.
    

                                      -13-

<PAGE>

Code of Ethics

Alger  Management  personnel  ("Access  Persons")  are  permitted  to  engage in
personal securities  transactions  subject to the restrictions and procedures of
the  Fund's  Code of Ethics.  Pursuant  to the Code of  Ethics,  Access  Persons
generally must preclear all personal  securities  transactions  prior to trading
and are subject to certain  prohibitions on personal trading. You can get a copy
of the Fund's Code of Ethics by calling the Fund toll-free at (800) 711-6141.

Expenses of the Fund

Operating  expenses for the Fund generally consist of all costs not specifically
borne by Alger Management,  including  custodian fees,  Trustees' fees, transfer
agency fees, legal fees,  auditing costs,  investment  management fees, fees for
necessary  professional and brokerage services,  costs of regulatory  compliance
and costs associated with maintaining legal existence and shareholder relations.
In  addition,  the Fund may  compensate  Alger Inc.  for  servicing  shareholder
accounts. From time to time, Alger Management,  in its sole discretion and as it
deems  appropriate,  may assume certain expenses of the Fund while retaining the
ability to be  reimbursed  by the Fund for such amounts  prior to the end of the
fiscal year.  This will have the effect of lowering the Fund's  overall  expense
ratio and of increasing return to investors,  or the converse,  at the time such
amounts are assumed or reimbursed, as the case may be.

Independent Public Accountants

Arthur Andersen LLP serves as independent public accountants for the Fund.

TAXES

The following is a summary of selected  federal income tax  considerations  that
may  affect  the Fund and its  shareholders.  The  summary  is not  intended  to
substitute  for  individual  tax advice and investors are urged to consult their
own tax  advisers  as to the  federal,  state  and  local  tax  consequences  of
investing in the Fund.

The Fund intends to qualify as a "regulated investment company" under Subchapter
M of the Internal Revenue Code of 1986, as amended (the "Code"). If qualified as
a regulated investment company, the Fund will pay no federal income taxes on its
investment  company  taxable  income  (that is,  taxable  income  other than net
realized  long-term capital gains) and its net realized  long-term capital gains
that are distributed to  shareholders.  To qualify under  Subchapter M, the Fund
must,  among other things,  distribute to its  shareholders  at least 90% of its
taxable net investment income and net realized  short-term  capital gains. In so
qualifying  the Fund may be  restricted  in the  utilization  of  certain of the
investment  techniques  described  above  and in  the  Fund's  prospectus.  As a
regulated investment company, the Fund is subject to a non-deductible excise tax
of 4% with respect to certain  undistributed amounts of income and capital gains
during the calendar year. The Fund expects to make additional  distributions  or
change the timing of its  distributions  so as to avoid the  application of this
tax.

In general,  any gain or loss on the  redemption or exchange of Fund shares will
be long-term  capital gain or loss if held by the  shareholder for more than one
year, and will be short-term  capital gain or loss if held for one year or less.
However, if a shareholder  receives a distribution  taxable as long-term capital
gain with respect to Fund shares,  and redeems or  exchanges  the shares  before
holding them for more than six months, any loss on the redemption or exchange up
to the amount of the distribution will be treated as a long-term capital loss.

   
Dividends  of  the  Fund's  net  investment  income  and  distributions  of  its
short-term  capital gains will be taxable as ordinary  income.  Distributions of
long-term  capital  gains  will be  taxable  as such  at the  appropriate  rate,
regardless  of the  length  of time you  have  held  shares  of the  Fund.  Only
dividends that reflect a Fund's income from certain  dividend-paying stocks will
be  eligible  for  the  federal   dividends-received   deduction  for  corporate
shareholders.
    

If a  shareholder  fails to furnish a correct  taxpayer  identification  number,
fails to fully report dividend or interest  income,  or fails to certify that he
or she has provided a correct taxpayer  identification number and that he or she
is not subject to such withholding,  then the shareholder may be subject to a 31
percent "backup  withholding tax" with respect to (i) any taxable  dividends and
distributions and (ii) any proceeds of any redemption of Fund shares.

CUSTODIAN AND TRANSFER AGENT

State Street Bank & Trust Company,  225 Franklin Street,  Boston,  Massachusetts
02110,  serves  as  custodian  of the  Fund's  assets  pursuant  to a  custodian
agreement. Alger Shareholder Services, Inc. ("Services"),  30 Montgomery Street,
Jersey City, New Jersey 07302, serves as transfer agent for the Fund pursuant to
a transfer  agency  agreement.  Under the  transfer  agency  agreement  Services
processes  purchases  and  redemptions  of  shares of the  Fund,  maintains  the
shareholder account records for the Fund, handles certain communications between
shareholders  and the Fund  and  distributes  any  dividends  and  distributions
payable by the Fund.

                                      -14-

<PAGE>

Under the transfer  agency  agreement,  Services is compensated on a per-account
and, for certain transactions, a per-transaction basis.

DIVERSIFICATION

   
The  Fund  is  classified  as  a  "diversified"  investment  company  under  the
Investment  Company Act of 1940. A  "diversified"  investment  company under the
Investment Company Act of 1940. A "diversified"  investment company is required,
with  respect to 75% of its assets,  to limit its  investment  in any one issuer
(other than the U.S.  government) to no more than 5% of the investment company's
total assets. The Fund intends to continue to qualify as a "regulated investment
company"  under the Internal  Revenue  Code;  one of the  requirements  for such
qualification  is a quarterly  diversification  test,  applicable to 50% (rather
than 75%) of the Fund's assets, similar to the requirement stated above.

CERTAIN SHAREHOLDERS

Set forth below is certain information regarding significant shareholders of the
Fund. Charles Schwab & Co., Inc.--Special Custody Acct. owned beneficially or of
record 50% of the shares of the Fund at February  1, 1999,  and may be deemed to
control the Fund, which may have the effect of  proportionately  diminishing the
voting power of other shareholders of the Fund.

The following table contains information  regarding persons who are known by the
Fund to own  beneficially or of record five percent or more of the shares of the
Fund. Unless otherwise noted, the address of each owner is 1 World Trade Center,
Suite 9333, New York, New York 10048. All holdings are expressed as a percentage
of the Fund's outstanding shares as of February 1, 1999.
    

                                    Record/Beneficial
                                        Ownership
                                   ------------------

   
Charles Schwab & Co., Inc.
Special Custody Acct.
101 Montgomery St.
San Francisco, CA 94104 .........              50%/--%
                                    Record/Beneficial
                                        Ownership
                                   ------------------
    

National Financial Services
161 Devonshire St.
Boston, MA 02110 ................              11%/--%

   
The Fund's  Trustees and officers as a group hold  directly  less than 1% of the
Fund's  outstanding  shares.  However,  Alger  Associates,  Inc.,  of which Fred
M.Alger III and David D. Alger are the majority  shareholders,  owns 4.3% of the
Fund's shares.
    

ORGANIZATION

The Fund is a diversified,  open-end  management  investment  company.  From its
inception  in 1968  until  February  12,  1996,  the  Fund  was  organized  as a
Massachusetts  business  corporation,  and  it  had  operated  as  a  registered
closed-end  investment  company  since  1978.  Shares of  closed-end  investment
companies, unlike those of open-end companies, are ordinarily not redeemable and
are not continuously  offered for sale to the public.  On February 12, 1996, the
Fund  reorganized  as a  Massachusetts  business  trust and also converted to an
open-end   investment   company,  or  "mutual  fund."  In  connection  with  the
reorganization,  the name of the Fund was changed from "Spectra  Fund,  Inc." to
"Spectra  Fund." The Fund is authorized to offer an unlimited  number of shares.

Although, as a Massachusetts  business trust, the Fund is not required by law to
hold annual  shareholder  meetings,  it may hold  meetings  from time to time on
important matters, and shareholders have the right to call a meeting to remove a
Trustee or to take other action  described in the Trust's  Declaration of Trust.
Meetings of  shareholders  normally will not be held for the purpose of electing
Trustees  unless  and until such time as less than a  majority  of the  Trustees
holding  office have been  elected by  shareholders,  at which time the Trustees
then in office will call a  shareholders'  meeting for the election of Trustees.
Under  the  Act,  shareholders  of  record  of no less  than  two-thirds  of the
outstanding  shares of the Fund may remove a Trustee  through a  declaration  in
writing  or by vote  cast in person  or by proxy at a  meeting  called  for that
purpose. Under the Trust Agreement,  the Trustees are required to call a meeting
of shareholders for the purpose of voting on the question of removal of any such
Trustee when requested in writing to do so by the  shareholders of record of not
less than 10 percent of the Fund's outstanding shares.

Shares do not have  cumulative  voting rights,  which means that holders of more
than 50 percent of the shares  voting for the election of Trustees can elect all
Trustees.  Shares have equal voting rights,  which cannot be adversely  modified
other than by majority  vote.  Shares are  transferable  but have no preemptive,
conversion or subscription  rights.  In the interest of economy and convenience,
certificates  representing  shares of the Fund are  physically  issued only upon
specific written request of a shareholder.

Massachusetts law provides that shareholders could, under certain circumstances,
be held personally  liable for the obligations of the Fund.  However,  the Trust
Agreement  disclaims  shareholder  liability for acts or ob-

                                      -15-

<PAGE>

ligations of the Fund and requires  that notice of such  disclaimer  be given in
each agreement, obligation or instrument entered into or executed by the Fund or
a Trustee.  The Trust  Agreement  provides for  indemnification  from the Fund's
property for all losses and expenses of any shareholder  held personally  liable
for the  obligations of the Fund.  Thus, the risk of a  shareholder's  incurring
financial loss on account of shareholder  liability is limited to  circumstances
in which the Fund itself would be unable to meet its obligations,  a possibility
that the Fund believes is remote.  Upon payment of any liability incurred by the
Fund, the  shareholder  paying the liability  will be entitled to  reimbursement
from the  general  assets of the  Fund.  The  Trustees  intend  to  conduct  the
operations of the Fund in a manner so as to avoid, as far as possible,  ultimate
liability of the  shareholders  for  liabilities of the Fund. 

DETERMINATION OF PERFORMANCE

The Fund may include  quotations of "total return" in  advertisements or reports
to  shareholders  or  prospective  investors.  Total  return  figures  show  the
aggregate or average  percentage  change in value of an  investment  in the Fund
from the  beginning  date of the  measuring  period to the end of the  measuring
period.  These  figures  reflect  changes in the price of the Fund's  shares and
assume that any income dividends and/or capital gains  distributions made by the
Fund during the period were  reinvested  in shares of the Fund.  Figures will be
given for recent short-, mid-, and long-term periods (ordinarily for 1, 5 and 10
years),  including  periods  during  which  the Fund  operated  as a  closed-end
investment  company,  and may be given for other  periods  as well (such as from
commencement  of the  Fund's  operations,  or on a  year-by-year  basis) and may
utilize dollar cost  averaging.  The Fund may also use  "aggregate"total  return
figures for various periods,  representing the cumulative  change in value of an
investment  in the Fund for the specific  period  (again  reflecting  changes in
share net asset value and assuming  reinvestment of dividends and distributions)
as well as "actual annual" and "annualized" total return figures.  Total returns
may be shown by means of schedules, charts or graphs, and may indicate subtotals
of the various  components  of total  return  (i.e.,  change in value of initial
investment, income dividends and capital gains distributions). Total return will
vary based on changes in market conditions.  In addition, since the deduction of
expenses is reflected in the total return  figures,  total return will also vary
based on the level of the Fund's expenses.  Current total return  quotations may
be  obtained  by  contacting  the Fund.  Further  information  about the  Fund's
performance  is contained  in its Annual  Report to  Shareholders,  which may be
obtained without charge by contacting the Fund.

The average annual "total return" is computed  according to formulas  prescribed
by the SEC. These performance figures are calculated in the following manner:

A. Total  Return--The  Fund's  average  annual  total  return  described  in the
   Prospectus is computed 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 1, 5 and 10 year periods (or fractional portion 
               thereof);


The average  annual total returns for the Fund for the periods  indicated  below
were as follows:
   
                                       Five        Ten
                                       Years      Years
                        Year Ended     Ended      Ended
                         10/31/98    10/31/98   10/31/98
                         ---------    -------    -------
                           16.94%      24.13%    22.84%
    

B.  Yield--the  Fund's net  annualized  yield  described  in the  Prospectus  is
    computed according to the following formula:

                                        a-b
                            YIELD = 2[(---- + 1)6 - 1]
                                       cd

Where:   a = dividends and interest earned during the period.

         b =  expenses accrued for the period (net of reimbursements).

         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.

In General

Current performance information for the Fund may be obtained by calling the Fund
at the  telephone  number  provided  on the  cover  page  of this  Statement  of
Additional  Information.  The Fund's quoted performance may not be indicative of
future performance.  The

                                      -16-

<PAGE>

Fund's  performance will depend upon factors such as the Fund's expenses and the
types of instruments held by the Fund.

   
From time to time,  advertisements  or reports to  shareholders  may compare the
yield or  performance  of the Fund to that of other  mutual funds with a similar
investment  objective.  The  performance  of the  Fund,  for  example,  might be
compared to rankings  prepared by Lipper  Analytical  Services Inc.,  which is a
widely recognized,  independent  service that monitors the performance of mutual
funds, as well as to various unmanaged indices, such as the S&P 500 Index(R). In
addition,  evaluations  of the Fund published by nationally  recognized  ranking
services   or  articles   regarding   performance,   rankings   and  other  Fund
characteristics may appear in national publications  including,  but not limited
to, BARRON'S, BUSINESS WEEK, FORBES, INSTITUTIONAL INVESTOR, INVESTOR'S BUSINESS
DAILY, KIPLINGER'S PERSONAL FINANCE, MONEY, MORNINGSTAR, THE NEW YORK TIMES, USA
TODAY AND THE WALL  STREET  JOURNAL and may be  included  in  advertisements  or
communications to shareholders.  Any given performance  comparison should not be
considered as representative of the Fund's performance for any future period.
    

FINANCIAL STATEMENTS

The  Fund's  financial  statements  for the year ended  October  31,  1998,  are
contained in the Annual Report to  shareholders  and are hereby  incorporated by
reference.  A copy of the Fund's Annual Report may be obtained free of charge by
telephoning (800) 711-6141.

                                      -17-

<PAGE>

APPENDIX

Corporate Bond Ratings

Bonds rated Aa by Moody's  Investors  Service,  Inc.  ("Moody's")  are judged by
Moody's to be of high quality by all  standards.  Together  with bonds rated Aaa
(Moody's  highest  rating) they comprise what are generally  known as high-grade
bonds. Aa bonds are rated lower than Aaa bonds because margins of protection may
not be as large as those of Aaa bonds, or fluctuation of protective elements may
be of greater  amplitude,  or there may be other elements  present that make the
long-term risks appear somewhat larger than those  applicable to Aaa securities.
Bonds that are rated A by Moody's 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 that suggest a susceptibility to impairment in the future.

Moody's Baa rated bonds 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.

Bonds rated Ba by Moody's are judged to have speculative elements;  their future
cannot be  considered  as well  assured.  Often the  protection  of interest and
principal  payments may be very moderate and thereby not well safeguarded during
both good and bad times over the future.  Uncertainty of position  characterizes
bonds  in this  class.  Bonds  which  are  rated  B by  Moody's  generally  lack
characteristics of a desirable  investment.  Assurance of interest and principal
payments or of  maintenance  of other terms of the contract over any long period
of time may be small.

Moody's  applies  the  numerical  modifiers  1, 2 and 3 to each  generic  rating
classification  from Aa through B. The  modifier 1 indicates  that the  security
ranks in the higher end of its generic rating category; the modifier 2 indicates
a mid-range  ranking;  and the modifier 3 indicates  that the issue ranks in the
lower end of its generic rating category.

    Bonds rated AA by Standard & Poor's Corporation ("S&P") are judged by S&P to
be high-grade  obligations and in the majority of instances differ only in small
degree  from  issues  rated AAA  (S&P's  highest  rating).  Bonds  rated AAA are
considered by S&P to be the highest grade  obligations  and possess the ultimate
degree of protection as to principal  and interest.  With AA bonds,  as with AAA
bonds, prices move with the long-term money market.  Bonds rated A by S&P have a
strong  capacity to pay principal and interest,  although they are somewhat more
susceptible  to the adverse  effects of changes in  circumstances  and  economic
conditions.

    S&P's BBB rated  bonds,  or  medium-grade  category  bonds,  are  borderline
between  definitely sound  obligations and those where the speculative  elements
begin to predominate.  These bonds have adequate asset coverage and normally are
protected by satisfactory earnings. Their susceptibility to changing conditions,
particularly  to  depressions,   necessitates  constant  watching.  These  bonds
generally are more responsive to business and trade  conditions than to interest
rates. This group is the lowest that qualifies for commercial bank investment.

    Bonds  rated BB and B by S&P are  regarded,  on  balance,  as  predominantly
speculative  with  respect to capacity to pay  interest  and repay  principal in
accordance  with the terms of the  obligation.  These ratings may be modified by
the addition of a plus or minus sign to show relative  standing within the major
rating  categories.  Debt rated BB has less near-term  vulnerability  to default
than other speculative issues.  However, it faces major ongoing uncertainties or
exposure to adverse business,  financial or economic  conditions that could lead
to inadequate  capacity to meet timely interest and principal  payments.  The BB
rating  category  is also  used for debt  subordinated  to  senior  debt that is
assigned  an  actual  or  implied  BBB-  rating.  Debt  rated  B has  a  greater
vulnerability  to  default  but  currently  has the  capacity  to meet  interest
payments  and  principal  repayments.  Adverse  business,  financial or economic
conditions  will likely impair capacity or willingness to pay interest and repay
principal.  The B rating  category is also used for debt  subordinated to senior
debt that is assigned an actual or implied BB or BB- rating.

    Bonds rated AAA by Fitch  Investors  Service,  Inc.  ("Fitch") are judged by
Fitch to be strictly high grade, broadly marketable,  suitable for investment by
trustees and fiduciary  institutions and liable to but slight market fluctuation
other than through changes in the money rate. The prime feature of an AA bond is
a showing of earnings  several times or many times interest  requirements,  with
such stability of applicable  earnings that safety is beyond reasonable question

                                      A-1

<PAGE>

APPENDIX
(continued)

whatever  changes  occur in  conditions.  Bonds  rated AA by Fitch are judged by
Fitch to be of safety virtually  beyond question and are readily salable,  whose
merits are not unlike those of the AAA class, but whose margin of safety is less
strikingly  broad. The issue may be the obligation of a small company,  strongly
secured  but  influenced  as to  rating  by the  lesser  financial  power of the
enterprise and more local type of market.

    Bonds rated Duff-1 are judged by Duff and Phelps, Inc. ("Duff") to be of the
highest credit quality with negligible risk factors;  only slightly more than U.
S. Treasury debt.  Bonds rated Duff-2,  3 and 4 are judged by Duff to be of high
credit  quality  with  strong  protection  factors.  Risk is modest but may vary
slightly from time to time because of economic conditions.

Commercial Paper Ratings

Moody's Commercial Paper ratings are opinions of the ability of issuers to repay
punctually  promissory  obligations not having an original maturity in excess of
nine months.  The rating Prime-1 is the highest commercial paper rating assigned
by Moody's.  Issuers rated  Prime-1,  or related  supporting  institutions,  are
considered to have a superior  capacity for  repayment of short-term  promissory
obligations.  Issuers rated Prime-2,  or related  supporting  institutions,  are
considered  to have a strong  capacity for  repayment of  short-term  promissory
obligations.  This will normally be evidenced by many of the  characteristics of
issuers rated  Prime-l,  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 liquidity is maintained.

Commercial  paper ratings of S&P are current  assessments  of the  likelihood of
timely  payment of debts having  original  maturities  of no more than 365 days.
Commercial  paper rated A-1 by S&P indicates that the degree of safety regarding
timely payment is either overwhelming or very strong. Those issues determined to
possess  overwhelming  safety  characteristics  are denoted  A-1+.  Capacity for
timely payment on commercial paper rated A-2 is strong,  but the relative degree
of  safety is not as high as for  issues  designated  A-1.  The  rating  Fitch-1
(Highest Grade) is the highest  commercial paper rating assigned by Fitch. Paper
rated Fitch-1 is regarded as having the strongest degree of assurance for timely
payment.  The rating Fitch-2 (Very Good Grade) is the second highest  commercial
paper rating  assigned by Fitch which  reflects an  assurance of timely  payment
only slightly less in degree than the strongest issues.

The rating Duff-1 is the highest commercial paper rating assigned by Duff. Paper
rated Duff-1 is regarded as having very high  certainty  of timely  payment with
excellent liquidity factors which are supported by ample asset protection.  Risk
factors are minor.  Paper rated  Duff-2 is regarded as having good  certainty of
timely payment,  good access to capital markets and sound liquidity  factors and
company fundamentals. Risk factors are small.

                                      A-2

<PAGE>

   
INVESTMENT MANAGER:
Fred Alger Management, Inc.
One World Trade Center
Suite 9333
New York, New York 10048
- --------------------------------------------------------------------------------
DISTRIBUTOR:
Fred Alger & Company, Incorporated
30 Montgomery Street
Jersey City, New Jersey 07302
- --------------------------------------------------------------------------------
TRANSFER AGENT:
Alger Shareholder Services, Inc.
30 Montgomery Street
Box 2001
Jersey City, New Jersey 07302
- --------------------------------------------------------------------------------
INDEPENDENT PUBLIC ACCOUNTANTS:
Arthur Andersen LLP
1345 Avenue of the Americas
New York, New York 10105
- --------------------------------------------------------------------------------
COUNSEL:
Hollyer Brady Smith Troxell
 Barrett Rockett Hines & Mone LLP
551 Fifth Avenue
New York, New York 10176
- --------------------------------------------------------------------------------
No  person  has  been  authorized  to  give  any  information  or  to  make  any
representations  other than those contained in the Prospectus,  the Statement of
Additional  Information or the Fund's  official  sales  literature in connection
with the  offering  of the  Fund's  shares,  and if given  or made,  such  other
information or  representations  must not be relied on as having been authorized
by the Fund. The Prospectus  does not constitute an offer in any state in which,
or to any person to whom,  such offer may not  lawfully  be made.

SPECTRA FUND
1 World Trade Center 
Suite 9333 
New York, New York 10048 
(800) 711-6141
    

                                                                       STATEMENT
                                                                   OF ADDITIONAL
                                                                     INFORMATION

   
March 1, 1999
    

<PAGE>

                                     PART C

                                OTHER INFORMATION

Item 23.   Exhibits

Exhibit No.                Description of Exhibit
- -----------                ----------------------

     (a)            Agreement and Declaration of Trust (1)  [EDGAR 2/98]

     (b)            By-laws of Registrant (1) [EDGAR 2/98]

     (c)            See Exhibits (a) and (b)

     (d)            Investment Management Agreement (1)  [EDGAR 2/98]

     (e)            Distribution Agreement (1)  [EDGAR 2/98]

       


<PAGE>

     (g)            Custody Agreement (4)

     (h)            Shareholder Servicing Agreement (1)  [EDGAR 2/98]

     (i)            Opinion and Consent of Hollyer Brady Smith Troxell
                    Barrett Rockett Hines & Mone LLP (3)

     (j-1)          Opinion and Consent of Sullivan & Worcester (5)

     (j-2)          Consent of Arthur Andersen LLP

       

     (p)            Powers of Attorney executed by David D. Alger, Gregory S.
                    Duch, Stephen E. O'Neil, Nathan E. Saint-Amand and B. Joseph
                    White

- -------------------------

(1)  Incorporated  by  reference to  Registrant's  Registration  Statement  (the
     "Registration Statement") filed with the Securities and Exchange Commission
     (the "SEC") on October 6, 1995.

(2)  Incorporated  by  reference  to  Pre-Effective   Amendment  No.  1  to  the
     Registration Statement, filed with the SEC on December 4, 1995.

(3)  Incorporated  by  reference  to  Pre-Effective   Amendment  No.  2  to  the
     Registration Statement, filed with the SEC on February 6, 1996.

(4)  Incorporated by reference to  Post-Effective Amendment No. 3 filed with the
     SEC on February 28, 1997.

(5)  Incorporated by reference to Post-Effective Amendment No. 4 filed with the
     SEC on December 22, 1998.

Item 24. Persons Controlled by or Under Common Control with Registrant
         -------------------------------------------------------------

                                     None.

<PAGE>

Item 25.  Indemnification
          ---------------

         Under Section 8.4 of  Registrant's  Agreement and Declaration of Trust,
any past or present  Trustee or officer of  Registrant  (including  persons  who
serve at  Registrant's  request as  directors,  officers  or Trustees of another
organization in which Registrant has any interest as a shareholder,  creditor or
otherwise[hereinafter  referred to as a "Covered Person"]) is indemnified to the
fullest extent  permitted by law against  liability and all expenses  reasonably
incurred by him in  connection  with any action,  suit or proceeding to which he
may be a party or  otherwise  involved  by reason of his being or having  been a
Covered  Person.  This provision does not authorize  indemnification  when it is
determined,  in the manner  specified in the Agreement and Declaration of Trust,
that such Covered  Person has not acted in good faith in the  reasonable  belief
that his actions  were in or not opposed to the best  interests  of  Registrant.
Moreover,  this  provision  does  not  authorize   indemnification  when  it  is
determined , in the manner  specified in the Agreement and Declaration of Trust,
that  such  Covered  Person  would  otherwise  be liable  to  Registrant  or its
shareholders by reason of willful  misfeasance,  bad faith,  gross negligence or
reckless disregard of his duties.  Expenses may be paid by Registrant in advance
of the final  disposition of any action,  suit or proceeding  upon receipt of an
undertaking  by such Covered  Person to repay such expenses to Registrant in the
event that it is ultimately  determined that indemnification of such expenses is
not authorized  under the Agreement and  Declaration of Trust and either (i) the
Covered  Person  provides  security for such  undertaking,  (ii)  Registrant  is
insured against losses from such advances,  or (iii) the disinterested  Trustees
or  independent  legal  counsel  determines,  in  the  manner  specified  in the
Agreement and Declaration of Trust,  that there is reason to believe the Covered
Person will be found to be entitled to indemnification.

         Insofar as  indemnification  for liability arising under the Securities
Act of 1933 (the  "Securities  Act") may be permitted to Trustees,  officers and
controlling  persons of  Registrant  pursuant to the  foregoing  provisions,  or
otherwise, Registrant has been advised that in the opinion of the Securities and
Exchange Commission (the "SEC") such indemnification is against public policy as
expressed in the Securities Act and is, therefore,  unenforceable.  In the event
that a claim  for  indemnification  against  such  liabilities  (other  than the
payment by  Registrant  of expenses  incurred  or paid by a Trustee,  officer or
controlling person of Registrant in the successful  defense of any action,  suit

<PAGE>

or  proceeding)  is asserted by such Trustee,  officer  orcontrolling  person in
connection with the securities being registered,  Registrant will, unless in the
opinion of its counsel  the matter has been  settled by  controlling  precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against  public policy as expressed in the  Securities
Act and will be governed by the final adjudication of such issue.


Item 26.  Business and Other Connections of Investment Adviser
          ----------------------------------------------------

         Alger Management,  which serves as investment manager to Registrant, is
generally engaged in rendering investment advisory services to institutions and,
to a lesser extent, individuals. Alger Management presently serves as investment
adviser  to one  closed-end  investment  company  and to  three  other  open-end
investment  companies.  The list  required by this Item 26  regarding  any other
business, profession,  vocation or employment of a substantial nature engaged in
by  officers  and  directors  of Alger  Management  during the past two years is
incorporated  by  reference  to  Schdules  A and D of Form  ADV  filed  by Alger
Management  pursuant  to the  Investment  Advisers  Act of 1940  (SEC  File  No.
801-06709).


Item 27. Principal Underwriter
         ---------------------

         (a) Alger Inc. acts as principal underwriter for Registrant, The Alger
Fund, The Alger American Fund and The Alger Retirement Fund and has acted as
subscription agent for Castle Convertible Fund, Inc.

         (b) The  information  required  by this  Item 27 with  respect  to each
director,  officer or partner of Alger Inc.  is  incorporated  by  reference  to
Schedule A of Form BD filed by Alger Inc.  pursuant to the  Securities  Exchange
Act of 1934 (SEC File No. 8-6423).

         (c) Not applicable.

Item 28. Location of Accounts and Records
         --------------------------------

         All accounts and records of Registrant are maintained by Mr. Gregory S.
Duch, Fred Alger & Company,  Incorporated, 30 Montgomery Street, Jersey City, NJ
07302.

<PAGE>

Item 29.  Management Services
          -------------------

          Not applicable.


Item 30.          Undertakings
                  ------------

          Not applicable.

<PAGE>

                                   SIGNATURES

   
         Pursuant to the requirements of the Securities Act and the Investment
Company Act, Registrant certifies that it meets all the requirements for 
effectiveness of this Registration Statement under Rule 485(b) under the 
Securities Act and has duly caused this Amendment to be signed on its behalf by
the undersigned, thereto duly authorized, in the City of New York and State of
New York on the 26th day of February, 1999.
    

                                          SPECTRA FUND

                                          By:  /s/ David D. Alger
                                               -------------------------------
                                               David D. Alger, President

ATTEST:  /s/  Gregory S. Duch
        --------------------------------------
              Gregory S. Duch, Treasurer

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

   
<TABLE>
<CAPTION>

         Signature                                    Title                                         Date
         ---------                                    -----                                         ----
<S>                                                   <C>                                    <C> 
   /s/ Fred M. Alger III*                                                                    February 26, 1999
- ----------------------------------------------------- Chairman of the Board                ----------------------
         Fred M. Alger III


   /s/ David D. Alger                                                                        February 26, 1999
- ----------------------------------------------------- President and Trustee                ----------------------
         David D. Alger                               (Chief Executive Officer)

   /s/  Gregory S. Duch                                                                      February 26, 1999
- ----------------------------------------------------- Treasurer                            ----------------------
         Gregory S. Duch                              (Chief Financial and Accounting
                                                       Officer)

   /s/ Nathan E. Saint-Amand*                                                                February 26, 1999
- ----------------------------------------------------- Trustee                              ----------------------
         Nathan E. Saint-Amand

   /s/ Stephen E. O'Neil*                                                                    February 26, 1999
- ----------------------------------------------------- Trustee                              ----------------------
         Stephen E. O'Neil

   /s/ Arthur M. Dubow*                                                                      February 26, 1999
- ----------------------------------------------------- Trustee                              ----------------------
         Arthur M. Dubow

   /s/ John T. Sargent*                                                                      February 26, 1999
- ----------------------------------------------------- Trustee                              ----------------------
         John T. Sargent

   /s/ B. Joseph White*                                                                      February 26, 1999
- ----------------------------------------------------- Trustee                              ----------------------
         B. Joseph White

*By: Gregory S. Duch
     --------------------------
     Gregory S. Duch
     Attorney-in-Fact
</TABLE>
    

<PAGE>

                        Securities Act File No. 33-98102
                    Investment Company Act File No. 811-1743


                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549


                                    FORM N-1A


                                                                           ---
           REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933          x
                                                                           ---

                                                                           ---
                         Post-Effective Amendment No. 5                      x
                                                                           ---


                                     and/or


                                                                           ---
       REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940      x
                                                                           ---

                                                                           ---
                                Amendment No. 18                            x
                                                                           ---


                        (Check appropriate box or boxes)


                                  SPECTRA FUND
- --------------------------------------------------------------------------------
               (Exact Name of Registrant as Specified in Charter)

               
                           --------------------------
                                 E X H I B I T S
                           --------------------------

<PAGE>

                                INDEX TO EXHIBITS


Exhibit
   No.
   ---

   (j-2)    Consent of Arthur Andersen LLP........................

   (p)      Powers of Attorney executed by David D. Alger, Gregory S. Duch,
            Stephen E. O'Neil, Nathan E. Saint-Amand and B. Joseph White




                                     ARTHUR
                                    ANDERSEN


                                                                   Exhibit (j-2)




                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
                   -----------------------------------------

As independent public accountants, we hereby consent to the use of our report
dated December 11, 1998 on the financial statements of Spectra Fund for the year
ended October 31, 1998 and to all references to our Firm included in or made a
part of the registration statement of Spectra Fund filed on Form N-1A (Amendment
No. 18), Investment Company Act File No. 811-1743 with the Securities and
Exchange Commission.


                                                       /s/Arthur Andersen LLP
                                                       ----------------------
                                                       ARTHUR ANDERSEN LLP



New York, New York
February 26, 1999



                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
Trustee of The Alger Fund, a Massachusetts business trust (the "Trust"), does
hereby constitute and appoint David D. Alger and Gregory S. Duch, or either of
them, the true and. lawful attorneys and agents of the undersigned, with power
of substitution, to do any and all acts and things and execute any and all
instruments that said attorneys or agents, or either of them, may deem necessary
or advisable or which may be required to enable the Trust to comply with the
Securities Act of 1933, as amended (the "1933 Act"), the Investment Company Act
of 1940, as amended (the 1940 Act"), and the securities. laws of the
jurisdictions in which securities of the Trust may be offered and sold, and any
rules, regulations or requirements of the Securities and Exchange Commission
("SEC"), or of the securities commission or agency of any such jurisdiction in
respect thereof, in connection with the registration of the Trust under the 1940
Act or the registration for sale of its securities under the 1933 Act, and the
registration and qualification of such securities under the securities laws of
any such jurisdiction, including specifically, but without limiting the
generality of the foregoing, the power and authority to sign, in the name and on
behalf of the undersigned officer and/or Trustee of the Trust (individually and
as such officer and/or Trustee), the Trust's registration statement on Form N-1A
and Notification of Registration on Form N-SA, any registration statement on any
other form adopted by the SEC or on the applicable form for any other
jurisdiction with respect to the Trust and its shares of beneficial interest, to
be filed with the SEC or the securities commission or other agency of any such
jurisdiction under either or both of said Acts or any other law or regulation,
any amendments or post-effective amendments of any of the foregoing, any and all
amendments and supplements to such amendments or post-effective amendments, and
any other instruments or documents filed as part of or in connection with said
registration statements, amendments or supplements; and the undersigned does
hereby ratify and confirm all that said attorneys or agents, or either of them,
shall do or cause to be done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has subscribed these presents as of
this 10th day of February, 1999.


                                        /s/ David D. Alger
                                        ---------------------

STATE OF NEW YORK   )
                    )  SS.:
COUNTY OF NEW YORK  )

         On the 10th day of February, 1999, before me personally came DAVID D.
ALGER, to me known to be the individual described in and who executed the
foregoing instrument, and he acknowledged to me that he executed the same.

                                        /s/ Louise M. Ulitto
                                        --------------------
                                        Notary Public, State of New York
[Notarial Seal]                         No. 24-4814711 Qualified in Kings County
                                        Commission Expires January 31, 2001



                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
Trustee of The Alger Fund, a Massachusetts business trust (the "Trust"), does
hereby constitute and appoint David D. Alger and Gregory S. Duch, or either of
them, the true and. lawful attorneys and agents of the undersigned, with power
of substitution, to do any and all acts and things and execute any and all
instruments that said attorneys or agents, or either of them, may deem necessary
or advisable or which may be required to enable the Trust to comply with the
Securities Act of 1933, as amended (the "1933 Act"), the Investment Company Act
of 1940, as amended (the 1940 Act"), and the securities. laws of the
jurisdictions in which securities of the Trust may be offered and sold, and any
rules, regulations or requirements of the Securities and Exchange Commission
("SEC"), or of the securities commission or agency of any such jurisdiction in
respect thereof, in connection with the registration of the Trust under the 1940
Act or the registration for sale of its securities under the 1933 Act, and the
registration and qualification of such securities under the securities laws of
any such jurisdiction, including specifically, but without limiting the
generality of the foregoing, the power and authority to sign, in the name and on
behalf of the undersigned officer and/or Trustee of the Trust (individually and
as such officer and/or Trustee), the Trust's registration statement on Form N-1A
and Notification of Registration on Form N-SA, any registration statement on any
other form adopted by the SEC or on the applicable form for any other
jurisdiction with respect to the Trust and its shares of beneficial interest, to
be filed with the SEC or the securities commission or other agency of any such
jurisdiction under either or both of said Acts or any other law or regulation,
any amendments or post-effective amendments of any of the foregoing, any and all
amendments and supplements to such amendments or post-effective amendments, and
any other instruments or documents filed as part of or in connection with said
registration statements, amendments or supplements; and the undersigned does
hereby ratify and confirm all that said attorneys or agents, or either of them,
shall do or cause to be done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has subscribed these presents as of
this 10th day of February, 1999.


                                        /s/ Gregory S. Duch
                                        ---------------------

STATE OF NEW YORK   )
                    )  SS.:
COUNTY OF NEW YORK  )

         On the 10th day of February, 1999, before me personally came GREGORY S.
DUCH, to me known to be the individual described in and who executed the
foregoing instrument, and he acknowledged to me that he executed the same.

                                        /s/ Louise M. Ulitto
                                        --------------------
                                        Notary Public, State of New York
[Notarial Seal]                         No. 24-4814711 Qualified in Kings County
                                        Commission Expires January 31, 2001



                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
Trustee of The Alger Fund, a Massachusetts business trust (the "Trust"), does
hereby constitute and appoint David D. Alger and Gregory S. Duch, or either of
them, the true and. lawful attorneys and agents of the undersigned, with power
of substitution, to do any and all acts and things and execute any and all
instruments that said attorneys or agents, or either of them, may deem necessary
or advisable or which may be required to enable the Trust to comply with the
Securities Act of 1933, as amended (the "1933 Act"), the Investment Company Act
of 1940, as amended (the 1940 Act"), and the securities. laws of the
jurisdictions in which securities of the Trust may be offered and sold, and any
rules, regulations or requirements of the Securities and Exchange Commission
("SEC"), or of the securities commission or agency of any such jurisdiction in
respect thereof, in connection with the registration of the Trust under the 1940
Act or the registration for sale of its securities under the 1933 Act, and the
registration and qualification of such securities under the securities laws of
any such jurisdiction, including specifically, but without limiting the
generality of the foregoing, the power and authority to sign, in the name and on
behalf of the undersigned officer and/or Trustee of the Trust (individually and
as such officer and/or Trustee), the Trust's registration statement on Form N-1A
and Notification of Registration on Form N-SA, any registration statement on any
other form adopted by the SEC or on the applicable form for any other
jurisdiction with respect to the Trust and its shares of beneficial interest, to
be filed with the SEC or the securities commission or other agency of any such
jurisdiction under either or both of said Acts or any other law or regulation,
any amendments or post-effective amendments of any of the foregoing, any and all
amendments and supplements to such amendments or post-effective amendments, and
any other instruments or documents filed as part of or in connection with said
registration statements, amendments or supplements; and the undersigned does
hereby ratify and confirm all that said attorneys or agents, or either of them,
shall do or cause to be done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has subscribed these presents as of
this 10th day of February, 1999.


                                        /s/ Stephen E. O'Neil
                                        ---------------------

STATE OF NEW YORK   )
                    )  SS.:
COUNTY OF NEW YORK  )

         On the 10th day of February, 1999, before me personally came STEPHEN E.
O'NEIL, to me known to be the individual described in and who executed the
foregoing instrument, and he acknowledged to me that he executed the same.

                                        /s/ Louise M. Ulitto
                                        --------------------
                                        Notary Public, State of New York
[Notarial Seal]                         No. 24-4814711 Qualified in Kings County
                                        Commission Expires January 31, 2001



                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
Trustee of The Alger Fund, a Massachusetts business trust (the "Trust"), does
hereby constitute and appoint David D. Alger and Gregory S. Duch, or either of
them, the true and. lawful attorneys and agents of the undersigned, with power
of substitution, to do any and all acts and things and execute any and all
instruments that said attorneys or agents, or either of them, may deem necessary
or advisable or which may be required to enable the Trust to comply with the
Securities Act of 1933, as amended (the "1933 Act"), the Investment Company Act
of 1940, as amended (the 1940 Act"), and the securities. laws of the
jurisdictions in which securities of the Trust may be offered and sold, and any
rules, regulations or requirements of the Securities and Exchange Commission
("SEC"), or of the securities commission or agency of any such jurisdiction in
respect thereof, in connection with the registration of the Trust under the 1940
Act or the registration for sale of its securities under the 1933 Act, and the
registration and qualification of such securities under the securities laws of
any such jurisdiction, including specifically, but without limiting the
generality of the foregoing, the power and authority to sign, in the name and on
behalf of the undersigned officer and/or Trustee of the Trust (individually and
as such officer and/or Trustee), the Trust's registration statement on Form N-1A
and Notification of Registration on Form N-SA, any registration statement on any
other form adopted by the SEC or on the applicable form for any other
jurisdiction with respect to the Trust and its shares of beneficial interest, to
be filed with the SEC or the securities commission or other agency of any such
jurisdiction under either or both of said Acts or any other law or regulation,
any amendments or post-effective amendments of any of the foregoing, any and all
amendments and supplements to such amendments or post-effective amendments, and
any other instruments or documents filed as part of or in connection with said
registration statements, amendments or supplements; and the undersigned does
hereby ratify and confirm all that said attorneys or agents, or either of them,
shall do or cause to be done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has subscribed these presents as of
this 10th day of February, 1999.


                                        /s/ Nathan E. Saint-Amand
                                        -------------------------

STATE OF NEW YORK   )
                    )  SS.:
COUNTY OF NEW YORK  )

         On the 10th day of February, 1999, before me personally came NATHAN E.
SAINT-AMAND, to me known to be the individual described in and who executed the
foregoing instrument, and he acknowledged to me that he executed the same.

                                        /s/ Louise M. Ulitto
                                        --------------------
                                        Notary Public, State of New York
[Notarial Seal]                         No. 24-4814711 Qualified in Kings County
                                        Commission Expires January 31, 2001



                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
Trustee of The Alger Fund, a Massachusetts business trust (the "Trust"), does
hereby constitute and appoint David D. Alger and Gregory S. Duch, or either of
them, the true and. lawful attorneys and agents of the undersigned, with power
of substitution, to do any and all acts and things and execute any and all
instruments that said attorneys or agents, or either of them, may deem necessary
or advisable or which may be required to enable the Trust to comply with the
Securities Act of 1933, as amended (the "1933 Act"), the Investment Company Act
of 1940, as amended (the 1940 Act"), and the securities. laws of the
jurisdictions in which securities of the Trust may be offered and sold, and any
rules, regulations or requirements of the Securities and Exchange Commission
("SEC"), or of the securities commission or agency of any such jurisdiction in
respect thereof, in connection with the registration of the Trust under the 1940
Act or the registration for sale of its securities under the 1933 Act, and the
registration and qualification of such securities under the securities laws of
any such jurisdiction, including specifically, but without limiting the
generality of the foregoing, the power and authority to sign, in the name and on
behalf of the undersigned officer and/or Trustee of the Trust (individually and
as such officer and/or Trustee), the Trust's registration statement on Form N-1A
and Notification of Registration on Form N-SA, any registration statement on any
other form adopted by the SEC or on the applicable form for any other
jurisdiction with respect to the Trust and its shares of beneficial interest, to
be filed with the SEC or the securities commission or other agency of any such
jurisdiction under either or both of said Acts or any other law or regulation,
any amendments or post-effective amendments of any of the foregoing, any and all
amendments and supplements to such amendments or post-effective amendments, and
any other instruments or documents filed as part of or in connection with said
registration statements, amendments or supplements; and the undersigned does
hereby ratify and confirm all that said attorneys or agents, or either of them,
shall do or cause to be done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has subscribed these presents as of
this 10th day of February, 1999.


                                        /s/ B. Joseph White
                                        ---------------------

STATE OF NEW YORK   )
                    )  SS.:
COUNTY OF NEW YORK  )

         On the 10th day of February, 1999, before me personally came B. JOSEPH
WHITE, to me known to be the individual described in and who executed the
foregoing instrument, and he acknowledged to me that he executed the same.

                                        /s/ Louise M. Ulitto
                                        --------------------
                                        Notary Public, State of New York
[Notarial Seal]                         No. 24-4814711 Qualified in Kings County
                                        Commission Expires January 31, 2001



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