CALVERT FUND
485BPOS, 1998-05-21
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SEC Registration Nos.
2-76510 and 811-3416

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE
SECURITIES ACT OF 1933

         Post-Effective Amendment No. 37              XX 

and/or

REGISTRATION STATEMENT UNDER THE
INVESTMENT COMPANY ACT OF 1940

         Amendment No. 37                    XX 


The Calvert Fund
Calvert Income Fund
(Exact Name of Registrant as Specified in Charter)

4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland  20814
(Address of Principal Executive Offices)

Registrant's Telephone Number:  (301) 951-4800

William M. Tartikoff, Esq.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland  20814
(Name and Address of Agent for Service)


It is proposed that this filing will become effective

      Immediately upon filing           XX  on May 31, 1998
pursuant to paragraph (b)               pursuant to paragraph (b)

      60 days after filing                   on (date)
pursuant to paragraph (a)               pursuant to paragraph (a)

of Rule 485.


The Calvert Fund
Form N-1A Cross Reference Sheet

     Item number           Prospectus Caption

         1.                Cover Page
         2.                Fund Expenses
         3.                Financial Highlights
                           Total Return
         4.                Investment Objective and Policies
                           Management of the Fund
         5.                Management of the Fund
         6.                Alternative Sales Options
                           Management of the Fund
                           Dividends, Capital Gains and Taxes
         7.                How to Buy Shares
                           Net Asset Value
                           Reduced Sales Charges
                           When Your Account Will Be Credited
                           Exchanges
         8.                Alternative Sales Options
                           How to Sell Your Shares
         9.                *

                  Statement of Additional Information Caption

         10.               Cover Page
         11.               Table of Contents
         12.               General Information
         13.               Investment Objective and Policies
                           Loans of Portfolio Securities
                           Repurchase Agreements
                           Investment Restrictions
                           Fund Transactions
         14.               Trustees and Officers
         15.               *
         16.               Investment Advisor and Investment Manager
                           Transfer and Shareholder Servicing Agent
                           Independent Accountants and Custodians
         17.               Portfolio Transactions
         18.               *
         19.               Valuation of Shares
                           Purchase and Redemption of Shares
                           Reduced Sales Charge
         20.               Dividends and Taxes
         21.               Method of Distribution
         22.               Calculation of Total Return
         23.               Financial Statements

*  Inapplicable or negative answer

<PAGE>

Prospectus May 31, 1998

The CALVERT FUND
Calvert Income Fund
4550 Montgomery Avenue, Bethesda, Maryland 20814
 

Investment Objective
Calvert Income Fund seeks to maximize long-term income, to the extent
consistent with prudent investment management and preservation of capital,
through investment in bonds and other income producing securities.


To Open An Account

The Fund offers three classes of shares,  (i) Class A shares,  with a sales
charge imposed at the time you purchase the shares ("front-end  sales  charge"),
(ii) Class B shares,  which impose no front-end sales charge,  but will impose a
deferred sales charge at the time of redemption,  depending on how long you have
owned the shares (contingent  deferred sales charge,  "CDSC"), and (iii) Class C
shares which  impose no front-end  sales charge but will impose a CDSC on shares
sold within one year.  Class C shares are not available through all brokers.  
Class B and C shares have a higher level of expenses than Class A shares, 
including Rule 12b-1 fees.  These alternatives permit you to choose the method
of purchasing shares that is most beneficial to you, depending on the amount of
the purchase, the length of time you expect to hold the shares, and other 
circumstances.  See "Alternative Sales Options" for further details to open an
account.

Call your broker, or complete and return the enclosed Account Application.
Minimum investment is $2,000.


About This Prospectus
Please read this Prospectus before investing. It is designed to provide you
with information you ought to know before investing and to help you decide if
the Fund's goals match your own. Keep this document for future reference.

     
A Statement  of  Additional  Information  for the Fund  ("SAI") (dated
May 31, 1998) has been filed with the  Securities  and  Exchange  Commission
(the  "Commission")  and is  incorporated  by reference.  This free statement is
available upon request from the Fund:  800-368-2748.  The Commission maintains a
website  (http://www.sec.gov)  that contains the SAI,  material  incorporated by
reference,  and other information regarding registrants that file electronically
with the Commission.
 


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


Shares of the fund are not deposits or obligations of, or guaranteed or
endorsed by, any bank, and are not federally insured by the fdic, the federal
reserve board, or any other agency. When investors sell shares of the fund,
the value may be higher or lower than the amount originally paid.

FUND EXPENSES
                                               Class A      Class B     Class C
A. Shareholder
   Transaction Costs
   Maximum Sales Charge on Purchases
  (as a percentage of offering price)          3.75%          None        None
 
   Maximium Contingent Deferred Sales
   Charge (as a percentage of purchase price
   or redemption proceeds, as applicable)      None           4.00% *    1.00%**

B. Annual Fund Operating Expenses - Fiscal
   Year 1997 (as a percentage of average
   net assets)
 
   Management Fees                            0.70%           0.70%       0.70% 
   Rule 12b-1 Service and Distribution Fees   0.15%           1.00%       1.00%
   Other Expenses                             0.48%              -         -
   Total Fund Operating Expenses 1            1.33%              -         -

     *A contingent  deferred  sales charge is imposed on the proceeds of Class B
shares redeemed within 4 years, subject to certain  exceptions.  That charge is
imposed  as a  percentage  of  net  asset  value  at the  time  of  purchase  or
redemption,  whichever  is less,  and  declines  form 4% in the first  year that
shares are held, to 3% in the second, 2% in the third year, and 1% in the fourth
year.  There is no charge on  redemptions  of Class B shares held for more than
four years. See "Calculation of Contingent Deferred Sales Charge" below.

     ** A Contingent deferred sales charge is imposed on the proceeds of Class C
shares  redeemed  within one year. That charge is imposed as a percentage of net
asset  value  at the time of  purchase  or  redemption  whichever  is less.  See
"Calculation of Contingent Deferred Sales Charge."

 1 Net Fund Operating Expenses after reduction for fees paid indirectly
 were: 1.26% (Class A)

C.       Example:
     You would pay the following expenses on a $1,000  investment,  assuming (1)
5% annual return;  (2) redemption at the end of each period; for Class A shares,
(3) payment of maximum initial sales charge at time of purchase; and (4) payment
of maximum applicable contingent deferred sales charge for Class B and C.

                                    1 Year      3 Years     5 Years    10 Years

Class A                             $51           $78         $108         $192

Class B
Assuming a complete
redemption at end of period
Assuming no redemption               -              -          -             -
    
Class C    
Assuming a complete
redemption at end of period
Assuming no redemption              -              -           -             -




The example, which is hypothetical, should not be considered a representation
of past or future expenses. Actual expenses and return may be higher or lower
than those shown.
 
Explanation of Table: The purpose of the table is to assist you in
understanding the various costs and expenses that an investor in the Fund may
bear directly (shareholder transaction costs) or indirectly (annual fund
operating expenses).


Shareholder Transaction Costs
are charges you pay when you buy or sell shares of the Fund. See "Reduced
Sales Charges" at Exhibit A to see if you qualify for possible reductions in
the sales charge. If you request a wire redemption of less than $1,000, you
will be charged a $5 wire fee.

Annual Fund Operating Expenses are based on the Fund's historical expenses,
except Other  Expenses for Class B and C which are estimates. Management  Fees
are paid by the Fund to Calvert  Asset  Management  Company,  Inc.  ("Investment
Advisor") for managing the Fund's  investments  and business  affairs.  The Fund
incurs  Other  Expenses  for   maintaining   shareholder   records,   furnishing
shareholder  statements and reports,  and other  services.  Management  Fees and
Other Expenses have already been reflected in the Fund's share price and are not
charged directly to individual shareholder accounts. Please refer to "Management
of the Fund" for further information.

The Fund's Rule 12b-1 fees include an asset-based sales charge. Thus,
long-term shareholders in the Fund may pay more in total sales charges than
the economic equivalent of the maximum front-end sales charge permitted by
rules of the National Association of Securities Dealers, Inc. In addition to
the compensation itemized above (sales charge and Rule 12b-1 service and
distribution fees), certain broker/dealers and/or their salespersons may
receive certain compensation for the sale and distribution of the securities
or for services to the Fund. See the SAI, "Method of Distribution."


Financial Highlights

     The following table provides information about the financial history of the
Fund.  It  expresses  the  information  in  terms  of a  single  Class  A  share
outstanding for the Fund  throughout each period.  The table has been audited by
those  independent  accountants whose reports are included in the Annual Reports
to  Shareholders  of the Fund. The table should be read in conjunction  with the
financial  statements  and their  related  notes.  The current  Annual Report to
Shareholders is incorporated by reference into the SAI.


                                        Year Ended Sept. 30,
 
Calvert Income                              1997          1996         1995

Net asset value, beginning of period        $16.47        $16.82       $15.68
Income from investment operations
         Net investment income              1.02          1.01         1.11
         Net realized and unrealized
           gain (loss)                      .74           (.32)        1.14
         Total from investment operations   1.76          .69          2.25
Distributions from
         Net investment income              (1.02)        (1.01)       (1.11)
         Net realized gain                  (.01)         -             -
         In excess of net realized gain     -             (.03)         -
         Total Distributions                (1.03)        (1.04)       (1.11)
Total increase (decrease) in 
  net asset value                           .73          (.35)         1.14
Net asset value, ending                     $17.20        $16.47       $16.82
Total return2                               11.03%        4.21%        14.90%
Ratio to average net assets:
         Net investment income              6.04%         6.02%        6.89%
         Total expenses3                    1.33%         1.26%        1.26%
         Net expenses                       1.26%         1.23%        1.23%
Portfolio turnover                          2,961%        153%         135%
Net assets, ending (in thousands)           $39,302       $44,431      $42,637
Number of shares outstanding
  ending (in thousands)                     2,285         2,698        2,535


2Total return does not reflect deduction of the Fund's front-end sales
charges. Total return prior to 1989 is not audited.

3Effective September 30, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly;  such   reductions are included in the
ratio of net expenses.

N/A - Disclosure not applicable to prior periods.


 
                                        Year Ended September 30,
Calvert Income Fund                         1994          1993         1992

Net asset value, beginning of year          $18.41        $17.50       $16.61
Income from investment operations
         Net investment income              1.16          1.23         1.28
         Net realized and unrealized
           gain (loss)                      (2.42)        .91          .89
         Total from investment operations   (1.26)        2.14         2.17
Distributions from
         Net investment income              (1.16)        (1.23)       (1.28)
         In excess of net realized gain     (.31)         -             -
         Total Distributions                (1.47)        (1.23)       (1.28)
Total increase (decrease) in
 net asset value                            (2.73)        .91          .89
Net asset value, ending                     $15.68        $18.41       $17.50
Total return4                               (6.94)%       12.47%       13.66%
Ratio to average net assets:
         Net investment income              6.86%         6.93%        7.59%
         Total expenses5                    N/A           N/A          N/A
         Net expenses                       1.07%         1.00%        1.04%
         Expenses reimbursed
           and/or waived                    N/A           N/A          N/A
Portfolio turnover                          34%           25%          18%
Net assets, ending (in thousands)           $45,936       $53,134      $43,494
Number of shares outstanding at
  ending (in thousands)                     2,929         2,886        2,486

                                        Year Ended September 30,
         1991                           1990              1989          1988

         $15.58                         $16.36            $15.70       $15.29

         1.31                           1.36              1.36         1.42
         1.03                           (.78)             .71          .71
         2.34                            .58              2.07         2.13
         (1.31)                         (1.36)            (1.41)       (1.42)
         -                              -                  -           (.30)
         (1.31)                         (1.36)            (1.41)       (1.72)
         1.03                           (.78)             .66          .41
         $16.61                         $15.58            $16.36       $15.70
         15.72%                         3.63%             13.48%       14.67%
 
         8.22%                          8.42%             8.57%        9.07%
         N/A                            N/A               N/A          N/A
         1.08%                          1.05%             1.07%        .94%
         N/A                            N/A               N/A          .25%
         27%                            5%                19%          37%
         $36,413                        $32,201           $22,969      $20,375
         2,193                          2,066             1,404        1,298


4Total return does not reflect deduction of the Fund's front-end sales
charges. Total return prior to 1989 is not audited.

5Effective September 30, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly;  such reductions are included in the ratio
of net expenses.

N/A - Disclosure not applicable to prior periods.


INVESTMENT OBJECTIVE AND POLICIES

Calvert Income Fund invests in a variety of fixed-income securities, 65% of
which must be of investment grade quality.

Calvert Income Fund seeks to maximize long-term income, to the extent
consistent with prudent investment management and preservation of capital,
primarily through investment in investment-grade bonds and other
income-producing securities. The Fund is non-diversified. Debt securities may
be long-term, intermediate-term, short-term, or any combination thereof,
depending on the Advisor's evaluation of current and anticipated market
patterns and trends.

Calvert Income Fund invests 80% of its assets in corporate obligations and
other fixed-income securities. At least 65% of its net assets at the date of
investment are rated within the four highest grades established by Moody's
Investors Services, Inc. (Aaa, Aa, A, or Baa), or by Standard and Poor's
Corporation (AAA, AA, A, or BBB), or if not rated, are of comparable quality
as determined by the Advisor. All fixed-income instruments are subject to
interest-rate risk; that is, when market interest rates rise, the current
principal value of a bond will decline.

The remaining 35% of the Fund's net assets may consist of other debt
securities (see below) including bonds rated below BBB or Baa
(noninvestment-grade securities). With lower rated bonds, there is a greater
possibility that an adverse change in the financial condition of the issuer
may affect its ability to pay principal and interest. In addition, to the
extent the Fund holds any such bonds, it may be negatively affected by adverse
economic developments, increased volatility or a lack of liquidity. See the
SAI, "Noninvestment-Grade Debt Securities," and bond ratings.

Calvert Income Fund may also purchase obligations issued or guaranteed as to
principal by the US Government or its agencies or instrumentalities;
certificates of deposit, time deposits, and bankers' acceptances of US banks
and their branches located outside of the US and of US branches of foreign
banks, provided that the bank has total assets of at least $1 billion or the
equivalent in other currencies; commercial paper which at the date of
investment is rated Prime-2 or better by Moody's, A-2 or better by Standard &
Poor's, or, if not rated, is of comparable quality as determined by the
Advisor;  and any of the above securities subject to repurchase agreements
with recognized securities dealers and banks. Up to 20% of the value of the
Fund's net assets may consist of other debt securities (including securities
convertible into or carrying warrants to purchase common stock or other equity
securities) and income-producing preferred and common stocks.


GNMA Certificates
GNMA Certificates, or GNMAs, are mortgage-backed securities representing
ownership of mortgage or construction loans that are issued by lenders such as
mortgage bankers, commercial banks and savings and loan associations and are
either insured by the Federal Housing Administration or guaranteed by the
Veterans Housing Administration. The GNMA may be secured by a single mortgage,
such as a large multi-family housing development, or, more typically, by a
"pool" or group of single-family housing mortgages. Once approved by GNMA, the
timely payment of interest and principal on each mortgage is guaranteed by
GNMA and backed by the full faith and credit of the US Government. GNMAs
differ from bonds in that principal is paid back monthly by the borrower over
the term of the loan rather than returned in a lump sum at maturity. GNMAs are
called "pass-through" securities because both interest and principal payments
(including prepayments) are passed through to the holder of the GNMA. Upon
receipt, principal payments will be reinvested by the Fund in additional
securities at the then prevailing interest rate. The amount of any premium
that may be paid upon purchase of a GNMA is not guaranteed. The Advisor will
attempt, through careful evaluation of available GNMA issues and prevailing
market conditions, to invest in GNMAs which provide a high income return but
are not subject to substantial risk of loss of principal. Accordingly, the
Advisor may forgo the opportunity to invest in certain issues of GNMAs which
would provide a high current income yield if the Advisor believes that such
issues would be subject to a risk of prepayment or loss of principal over the
long-term that would outweigh the short-term increment in yield.


Collateralized Mortgage Obligations
Collateralized mortgage obligations ("CMOs") are bonds which are the general
obligations of the bond issuer. CMOs may be issued by governmental entities,
such as the Federal Home Loan Mortgage Corporation (FHLMC), and by
non-governmental entities, such as banks and other mortgage lenders. CMOs
generally are secured by collateral consisting of individual mortgages or a
pool of mortgages. CMOs are not direct obligations of the Government.


FNMA and FHLMC Certificates
The Fund may invest in pass-through certificates issued by the Federal
National Mortgage Association ("FNMA") and Federal Home Loan Mortgage
Corporation ("FHLMC"). Unlike GNMAs, which are typically interests in pools of
mortgages insured or guaranteed by government agencies, FNMA and FHLMC
certificates represent undivided interests in pools of conventional mortgage
loans.


Nondiversified
There may be risks associated with the Fund being nondiversified.
Specifically, since a relatively high percentage of the assets of the Fund may
be invested in the obligations of a limited number of issuers, the value of
the shares of the Fund may be more susceptible to any single economic,
political or regulatory event than the shares of a diversified fund would be.


Financial Futures, Options, and Other Investment Techniques
The Fund can use various techniques to increase or decrease its exposure to
changing security prices, interest rates, currency exchange rates or other
factors that affect security values. These techniques may involve derivative
transactions such as buying and selling options and futures contracts and
leveraged notes, entering into currency exchange contracts, or swap
agreements, and purchasing indexed securities. The Fund can use these
practices either as substitution or as protection against an adverse move in
the Fund's portfolio to adjust the risk and return characteristics of the
Fund's portfolio. If the Advisor judges market conditions incorrectly or
employs a strategy that does not correlate well with the Fund's investments,
or if the counterparty to the transaction does not perform as promised, these
techniques could result in a loss. These techniques may increase the
volatility of the Fund and may involve a small investment of cash relative to
the magnitude of the risk assumed. Any instruments determined to be illiquid
are subject to the Fund's 15% restriction on illiquid securities. See the SAI
for more details about these strategies.



 
Hedging Strategies
The Fund may use short sales of US Treasury securities for the limited purpose
of hedging the Fund's duration (duration is a measure of the interest
rate-sensitivity of the Fund). Any short sales will be "covered" with an
equivalent amount of high quality, liquid securities in a segregated account
at the Fund's custodian. This hedging technique is intended to lower the
Fund's interest rate risk. However, as with other hedging strategies, the Fund
takes the risk that the strategy may not correlate well with the risk it is
intended to hedge against, or that the Advisor has judged market conditions
incorrectly.
 


Portfolio Turnover
The Fund's investment strategy causes it to have a relatively high portfolio
turnover compared to other funds. For the year ended September 30, 1997, the
portfolio turnover was 2,961%. All else being equal, a fund with high turnover
may incur higher transaction costs such as custodian and settlement fees, etc.
Also, funds with higher turnover may subject a shareholder to capital gains
taxes for unsold shares, whereas, unrealized gains are not subject to taxation
until a shareholder sells the fund shares. See "Dividends, Capital Gains, and
Taxes."


The Fund may enter into repurchase agreements and may purchase securities on a
forward or when-issued basis.
In a repurchase agreement, the Fund buys a security subject to the right and
obligation to sell it back at a higher price. These transactions must be fully
secured at all times, but they involve some credit risk to the Fund if the
other party defaults on its obligation and the Fund is delayed or prevented
from liquidating the collateral.

Purchasing obligations for future delivery or on a "when-issued" basis may
increase the Fund's overall investment exposure and involves a risk of loss if
the value of the securities declines prior to the settlement date. The
transactions are fully secured at all times.


Foreign Investments
The Fund may invest up to 20% of its assets in securities of foreign issuers,
and hedge its foreign securities holdings against anticipated adverse moves in
foreign currency exchange rates. The Fund may use either the spot (cash)
markets, forward contracts, or currency financial futures and options
transactions. It is impossible to forecast with precision the foreign currency
values, and the Fund could incur a loss on such currency transactions if the
market moves against the position it has taken. Securities of foreign issuers
may offer greater potential for capital appreciation or income than the
securities of domestic issuers and may involve investment risks that are
greater than those inherent in the securities of domestic issuers. Such
differences might possibly result from future political and economic
developments, disparities in economic systems, and imposition of foreign
governmental restrictions. There may also be less publicly available
information about a foreign issuer than about a domestic issuer;  foreign
issuers are not generally subject to uniform auditing, accounting and
reporting requirements comparable to those applicable to domestic issuers.


Other Policies
The Fund may borrow money from banks as a temporary measure for extraordinary
or emergency purposes. An explanation of this and the policies below is set
forth in the SAI.

The Fund may lend its portfolio securities to member firms of the New York
Stock Exchange and commercial banks with assets of $1 billion or more, but
only if the value of the securities loaned from a Fund will not exceed
one-third of the Fund's assets.
The Fund has adopted certain fundamental investment restrictions which are
discussed in detail in the SAI. Unless specifically noted otherwise, the
investment objective, policies and restrictions of the Fund are fundamental
and may not be changed without shareholder approval.

Although US Government-backed obligations in the Fund's portfolio may be
guaranteed by the Government, the Fund's net asset value per share and yield
are not guaranteed and will change in response to market conditions. There can
be no assurance that the Fund will be successful in meeting its investment
objective.


Yield and Total Return

     The Fund may advertise  yield and total return.  Yield measures the current
investment performance of each class of the Fund, that is, the rate of income on
its  portfolio  investments  divided by the share  price.  Yield is  computed by
annualizing  the result of dividing the net  investment  income per share over a
30-day  period by the maximum  offering  price per share on the last day of that
period.   Yields  are  calculated  according  to  accounting  methods  that  are
standardized for all stock and bond funds.

Both yield and total  return are based on  historical  results  and are not
intended to indicate future  performance. 
Total return for a class  includes not only the effect of income  dividends
but also any change in net asset value, or principal  amount,  during the stated
period. The total return shows its overall change in value, including changes in
share price and assuming all of the dividends and capital gain distributions are
reinvested.  A cumulative  total return reflects the  performance  over a stated
period of time. An average annual total return reflects the hypothetical  annual
compounded  return that would have produced the same cumulative  total return if
the performance had been constant over the entire period. Because average annual
returns tend to smooth out variations in the returns,  you should recognize that
they are not the same as actual  year-by-year  results.  Both  types of  returns
usually will include the effect of paying the Fund's sales charge.  Returns will
be higher, of course, if sales charges are not taken into account. Quotations of
"return  without  maximum  sales  load" do not  reflect  deduction  of the sales
charge.  You should  consider  these  figures  only if you qualify for a reduced
sales charge,  or for purposes of comparison with comparable  figures which also
do not reflect sales  charges,  such as mutual fund averages  compiled by Lipper
Analytical  Services,  Inc. Further  information about the Fund's performance is
contained in its Annual Report to  Shareholders,  which may be obtained  without
charge.


MANAGEMENT OF THE FUND

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

 
Calvert Income Fund is a series of The Calvert Fund (the "Trust"), an open-end
management investment company organized as a Massachusetts business trust on
March 15, 1982. The other series of the Fund is Calvert New Vision Small Cap
Fund.
 

The Trust is not required to hold annual shareholder meetings, but special
meetings may be called for certain purposes such as electing Trustees,
changing fundamental policies, or approving a management contract. As a
shareholder, you receive one vote for each share of the Fund you own.
Portfolio Managers

 
Since February 11, 1995, investment selections for the Fund have been made by
a committee of the Advisor's fixed-income portfolio managers.


Calvert Group is one of the largest investment management firms in the
Washington, D.C. area.
Calvert Group, Ltd., parent of the Fund's investment advisor, shareholder
servicing agent, and distributor, is a subsidiary of Acacia Mutual Life
Insurance Company of Washington, D.C. Calvert Group is one of the largest
investment management firms in the Washington, D.C. area. Calvert Group, Ltd.
and its subsidiaries are located at 4550 Montgomery Avenue, Suite 1000N,
Bethesda, Maryland 20814. As of December 31, 1997, Calvert Group managed and
administered over $5 billion in assets and more than 200,000 shareholder and
depositor accounts.
 


Calvert Asset Management Company, Co. serves as Advisor to the Fund.
Calvert Asset Management Company, Inc. (the "Advisor") is the Fund's
investment advisor. The Advisor provides the Fund with investment supervision
and management; administrative services and office space; furnishes executive
and other personnel to the Fund; and pays the salaries and fees of all
Trustees who are affiliated persons of the Advisor. The Advisor may also
assume and pay certain advertising and promotional expenses of the Fund and
reserves the right to compensate broker/dealers in return for their
promotional or administrative services.


 
The Advisor receives a fee based on a percentage of the Fund's assets.
For its services during the fiscal year ended September 30, 1997, pursuant to
the Investment Advisory Agreement, the Advisor received an investment advisory
fee of 0.70% of the Fund's respective average daily net assets.
 


Calvert Distributors, Inc. serves as underwriter to market the Fund's shares.
Calvert Distributors, Inc. ("CDI") is the Fund's principal underwriter and
distributor. Under the terms of its underwriting agreement with the Fund, CDI
markets and distributes the Fund's shares and is responsible for payment of
commissions and service fees to broker/dealers, banks, and financial services
firms, preparation of advertising and sales literature, and printing and
mailing of prospectuses to prospective investors.


 
The transfer agent keeps your account records
Calvert Shareholder Services, Inc. is the Fund's shareholder servicing agent.
National Financial Data Service, Inc. ("NFDS"), 1004 Baltimore, Kansas City,
Missouri, 64105, is the transfer and dividend disbursing agent for the Fund.
 


SHAREHOLDER GUIDE

Opening An Account
You can buy shares of the Fund in several ways which are described here and in
the chart below.

An account application accompanies this prospectus. A completed and signed
application is required for each new account you open, regardless of the
method you choose for making your initial investment. Additional forms may be
required from corporations, associations, and certain fiduciaries. If you have
any questions or need extra applications, call your broker, or Calvert Group
at 800-368-2748.

To invest in any of Calvert's tax-deferred retirement plans, please call
Calvert Group at 800-368-2748 to receive information and the required separate
application.


Alternative Sales Options
The Fund offers three classes of shares:

Class A Shares - Front-End Load Option
Class A shares are sold with a front-end sales charge at the time of purchase.
Class A shares are not subject to a sales charge when they are redeemed.

Class B Shares - Back-End Load Option
Class B shares are sold without a sales charge at the time of purchase, but are
subject to a deferred sales charge if they are redeemed within four calendar
years after purchase.  Class B shares will automatically convert to Class A 
shares at the end of six calendar years after purchase.

Class C Shares - Level Load Option
Class C shares are sold without a front-end sales charge at the time of
purchase.  They are subject to a deferred sales charge if they are redeemed
within one year after purchase.

Considerations for deciding which class of shares to buy.

 Income  distributions for Class A shares will probably be higher than those
for  Class  B and C  shares,  because  Class  B and C have  higher  distribution
expenses,  (See below). You should consider Class A shares if your qualify for a
reduced sales charge under Class A or if you plan to hold the shares for several
years.  The Fund will not normally  accept any purchase of Class B shares in the
amount of $250,000 or more.  Class C shares are not available for investments of
$1  million  or  more.  Brokers  or  others  may  receive  different  levels  of
compensation depending on which class of shares they sell.

Class A Shares
Class A shares are offered at net asset value plus a front-end sales charge as
follows:


Amount of                           As a % of      As a %of       Allowed to
Investment                          offering       net amount     Dealers as
                                    price          invested       a % of
                                                                  offering
                                                                  price

Less than $50,000                    3.75%         3.90%          3.00%
$100,000 but less than $250,000      2.25%         2.30%          1.75%
$250,000 but less than $500,000      1.75%         1.78%          1.25%
$500,000 but less than $1,000,000    1.00%         1.01%          0.80%
$1,000,000 and over                  0.00%         0.00%          0.25%*

 
*CDI reserves the right to recoup any portion of the amount paid to the dealer
if the investor redeems some or all of the shares from the Fund within twelve
months of the time of purchase.
 

Sales charges on Fund shares may be reduced or eliminated in certain cases
(see Exhibit A to this Prospectus).

The sales charge is paid to CDI, which in turn normally reallows a portion to
your broker/dealer. Upon written notice to dealers with whom it has dealer
agreements, CDI may reallow up to the full applicable sales charge. Dealers to
whom 90% or more of the entire sales charge is reallowed may be deemed to be
underwriters under the Securities Act of 1933.

     In  addition  to  any  sales  charge  reallowance  or  finder's  fee,  your
broker/dealer,  or other  financial  service firm through  which your account is
held,  currently  will be paid periodic  service fees at an annual rate of up to
0.25% of the  average  daily  net  asset  value of Class A Fund  shares  held in
accounts maintained by that firm.


 
Class A Distribution  Plan 

     The Fund  has  adopted  a Class A  Distribution  Plan  which  provides  for
payments at a maximum  annual rate of 0.50% of the average daily net asset value
of the  Fund  shares  to pay  expenses  associated  with  the  distribution  and
servicing.  Amounts paid by the Fund to CDI under the Distribution Plan are used
to pay to dealers and others,  including CDI salespersons who service  accounts,
service  fees at an annual  rate of up to 0.25% of the  average  daily net asset
value  of  Fund  shares,  and to pay  CDI for  its  marketing  and  distribution
expenses,  including,  but not limited to,  preparation of advertising and sales
literature  and  the  printing  and  mailing  of   prospectuses  to  prospective
investors. During the fiscal year ended September 30, 1997, Class A Distribution
Plan expenses for the Fund were 0.15%.  

Class B Shares

Class B shares of the Fund are offered at net asset value,  without a front-end
sales charge.  With certain  exceptions,  the Fund will impose a deferred  sales
charge at the time of redemption as follows:

                                    Contingent Deferred Sales
                                    Charge As A Percentage Of
Redemption During                   Net Asset Value At Redemption

1st Year Since Purchase              4%
2nd Year Since Purchase              3%
3rd Year Since Purchase              2%
4th Year Since Purchase              1%
5th Year Since Purchase and          None
thereafter

If imposed, the deferred sales charge is deducted from the redemption proceeds
otherwise payable to you.  The deferred sales charge is retained by CDI.  See
"Calculation of Contingent Deferred Sales charges and Waiver of Sales Charges"
below.

Class B shares that have been outstanding for six calendar years will
automatically convert to Class A shares, which are subject to a lower
Distribution Plan charge, without imposition of a front-end sales charge or
exchange fee.  The Class B shares so converted will no longer be subject to
the higher expenses borne by Class B shares.  Because the net asset value per
share of the Class A shares may be higher or lower than that of the Class B
shares at the time of conversion, although the dollar value will be the same,
a shareholder may receive more or less Class A shares than the number of Class
B shares converted.  Under current law, it is the Advisor's opinion that such
a conversion will not constitute a taxable event under federal income tax
law.  In the event that this ceases to be the case, the Board of Trustees will
consider what action, if any, is appropriate and in the best interests of the
Class B shareholders.

Class B Distribution Plan

The Fund has adopted a Distribution Plan with respect to its Class B shares
(the  "Class  B  Distribution   Plan"),  which  provides  for  payments  to  the
underwriter  at an  annual  rate of up to 1.00% of the  average  daily net asset
value of Class B shares,  to pay expenses of the distribution of Class B shares.
Amounts paid by the Fund under the Class B Distribution  Plan are currently
used by CDI to pay others (1) a commission  at the time of purchase of 3% of the
value of each share sold;  and/or (2) service fees at an annual rate of 0.25% of
the average  daily net asset value of shares sold by such  others,  beginning in
the 13th month after purchase.

Class C Shares

Class C shares are not  available  through all brokers.  Class C shares are
offered at net asset  value,  without a front-end  sales  charge.  With  certain
exceptions,  the Fund may  impose a  deferred  sales  charge of 1.00% on Class C
shares redeemed during the first year after purchase.  If imposed,  the deferred
sales charge is deducted from the redemption  proceeds otherwise payable to you.
The deferred  sales charge is retained by CDI. See  "Calculation  of  Contingent
Deferred Sales Charges and Waiver of Sales Charges" below.

Class C Distribution Plan

The Fund has  adopted a  Distribution  Plan with  respect to Class C shares
(the "Class C Distribution Plan"), which provides for payments at an annual rate
of up to 1.00% of the average  daily net asset  value of Class C shares,  to pay
expenses of the  distribution  and servicing of Class C shares.  Amounts paid by
the Fund under the Class C Distribution Plan are used by CDI to pay brokers and
other  selling  firms (1) a  commission  at the time of purchase of 1.00% of the
value of each share sold,  and (2)  beginning in the 13th month after  purchase,
quarterly  compensation at an annual rate of up to 0.75%,  plus a service fee as
described  above  under  "Class A  Distribution  Plan," of up to  0.25%,  of the
average daily net asset value of each share sold by such others.

Calculation of Contingent Deferred Sales Charge and Waiver of Sales Charges

Class B and Class C shares that are redeemed will not be subject to a
contingent deferred charge to the extent that the value of such shares
represents (1) reinvestment of dividends or capital gains distributions, (2)
shares held more than four years for Class B (one year for Class C) or (3)
capital appreciation of shares redeemed.  Any contingent deferred sales
charge is imposed on the net asset value of the shares at the time of
redemption or purchase, whichever is lower.  Upon request for redemption,
shares not subject to the contingent deferred sales charge will be redeemed
first.  Thereafter, shares held the longest will be the first to be redeemed.

The contingent deferred sales charge on Class B Shares will be waived in the
following circumstances: (1) redemption upon the death or disability of the
shareholder, plan participant, or beneficiary ("disability" shall mean a total
disability as evidenced by a determination by the federal Social Security
Administration); (2) minimum required distributions from retirement plan
accounts for shareholders 70 1/2 and older (with the maximum amount subject to
this waiver being based only upon the shareholder's Calvert retirement
accounts); (3) return of an excess contribution or deferral amounts, pursuant
to sections 408(d)(4) or (5), 401(k)(8), or 402)(g)(2), or 401(m)(6) of the
Internal Revenue Code; (4) involuntary redemptions of accounts under
procedures set forth by the Fund's Board of Trustees; (5) a single annual
withdrawal under a systematic withdrawal plan of up to 10% per year of the
shareholder's account balance (minimum account balance $50,000 to establish).

Arrangements with Broker/Dealers and Others
CDI may also pay additional concessions, including non-cash promotional
incentives, such as merchandise or trips, to dealers employing registered
representatives who have sold or are expected to sell a minimum dollar amount
of shares of the Fund and/or shares of other Funds underwritten by CDI. CDI
may make expense reimbursements for special training of a dealer's registered
representatives, advertising or equipment, or to defray the expenses of sales
contests. All such payments will be in compliance with NASD rules. Payments
pursuant to a Distribution Plan are included in the operating expenses.


How to buy shares

Method          New Accounts                     Additional Investments

By Mail         $2,000 MINIMUM                   $250 MINIMUM
 
                Please make your check           Please make your check
                payable to the Fund and          payable to the Fund and
                mail it with your                mail it with your
                application to:                  investment slip to:

                Calvert Group                    Calvert Group
                P.O. Box 419544                  P.O. Box 419739
                Kansas City, MO 64141-6544       Kansas City, MO 64141-6739

By Registered,  CALVERT GROUP                    CALVERT GROUP
Certified, or   C/O NFDS, 6TH FLOOR              C/O NFDS, 6TH FLOOR
Overnight       1004 BALTIMORE                   1004 BALTIMORE
Mail            Kansas City, MO 64105-1807       Kansas City, MO 64105-1807

Through Your    $2,000 MINIMUM                   $250 MINIMUM
Financial
Professional

AT THE CALVERT OFFICE
Visit the Calvert Office to make investments by check.
See the back cover page for the address.

FOR ALL OPTIONS BELOW, PLEASE CALL YOUR FINANCIAL PROFESSIONAL OR CALVERT
GROUP AT 800-368-2745

By Exchange           $2,000 MINIMUM                 $250 MINIMUM
(From your account in another Calvert Group fund)
WHEN OPENING AN ACCOUNT BY EXCHANGE, YOUR NEW ACCOUNT MUST BE ESTABLISHED WITH
THE SAME NAME(S), ADDRESS AND TAXPAYER IDENTIFICATION NUMBER AS YOUR EXISTING
CALVERT ACCOUNT.

By Bank Wire          $2,000 MINIMUM                 $250 MINIMUM

By Calvert Money      NOT AVAILABLE                  $50 MINIMUM
Controller*           FOR INITIAL
                      INVESTMENT




*Please allow sufficient time for Calvert Group to process your initial
request for this service, normally 10 business days. The maximum transaction
amount is $300,000, and your purchase request must be received by 4:00 p.m.
Eastern time.

NET ASSET VALUE

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

Portfolio securities and other assets are valued based on market quotations,
except that securities maturing within 60 days are valued at amortized cost.
If quotations are not available, securities are valued by a method that the
Board of Trustees believes accurately reflects fair value.  The NAV's of each
class will vary depending on the number of shares outstanding for each class.

The NAV for the Fund is calculated at the close of the Fund's business day,
which coincides with the closing of the regular session of the New York Stock
Exchange (normally 4:00 p.m. Eastern time). The Fund is open for business each
day the New York Stock Exchange is open. All purchases of Fund shares will be
confirmed and credited to your account in full and fractional shares (rounded
to the nearest 1/1000 of a share).


When Your Account Will Be Credited

 
Before you buy shares, please read the following information to make sure your
investment is accepted and credited properly
All of your purchases must be made in US dollars and checks must be drawn on
US banks. No cash will be accepted. The Fund reserves the right to suspend the
offering of shares for a period of time or to reject any specific purchase
order. If your check is not paid, your purchase will be canceled and you will
be charged a $10 fee plus costs incurred by the Fund. When you purchase by
check or with Calvert Money Controller,  those funds will be on hold for up to
10 business days from the date of receipt. During that period, the proceeds of
redemptions against those funds will be held until the transfer agent is
reasonably satisfied that the purchase payment has been collected. To avoid
this collection period, you can wire federal funds from your bank, which may
charge you a fee. As a convenience, check purchases can be received at
Calvert's offices for overnight mail delivery to the subtransfer agent and will
be credited the next business day or upon receipt. Any check purchase received
without an investment slip may cause delayed crediting.
 

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


Exchanges

You may exchange shares of the Fund for shares of other Calvert Group Funds.
Each exchange represents the sale of shares of one Fund and the purchase of
shares of another. Therefore, you could realize a taxable gain or loss on the
transaction.
If your investment goals change, the Calvert Group Family of Funds has a
variety of investment alternatives that includes common stock funds,
tax-exempt and corporate bond funds, and money market funds. The exchange
privilege is a convenient way to buy shares in other Calvert Group Funds in
order to respond to changes in your goals or in market conditions. However, to
protect a Fund's performance and to minimize costs, Calvert Group discourages
frequent exchanges and may prohibit additional purchases of Fund shares by
persons engaged in too many short-term trades. Before you make an exchange
from a Fund or Portfolio, please note the following:

o        Call your broker or a Calvert representative for information and a
prospectus for any of Calvert's other Funds registered in your state. Read the
prospectus of the Fund or Portfolio into which you want to exchange for
relevant information, including class offerings.

o        Complete and sign an application for an account in that Fund or
Portfolio, taking care to register your new account in the same name and
taxpayer identification number as your existing Calvert account(s). Exchange
instructions may then be given by telephone if telephone redemptions have been
authorized and the shares are not in certificate form.

 o You may exchange  shares on which you have already paid a sales charge at
Calvert Group and shares acquired by reinvestment of dividends or  distributions
into  another Fund at no  additional  charge.  Shares may only be exchanged  for
shares of the same Class of another  Calvert Group Fund.

 o No CDSC is imposed on exchanges  of shares  subject to a CDSC at the time
of the exchange.  The applicable CDSC is imposed at the time the shares acquired
by the exchange are redeemed.

 
o  Shareholders  (and  those  managing  multiple  accounts)  who  make  two
purchases and two exchange  redemptions of shares of the same  Portfolio  during
any 6-month period will be given written notice that they may be prohibited from
making additional investments.  This policy does not prohibit a shareholder from
redeeming  shares of the Fund,  and does not apply to trades  solely among money
market funds.

 o The Fund reserves the right to terminate or modify the exchange privilege
with 60 days written notice.

Other Calvert GROUP Services

 
Calvert Information Network
24 hour yield and prices.
Calvert Group has a round-the-clock telephone service and a website at
http://www.calvertgroup.com that lets existing customers obtain prices,
performance information, account balances, and, by telephone only, authorize
certain transactions.
 


Calvert Money Controller
Calvert Money Controller eliminates the delay of mailing a check or the
expense of wiring funds. You can request this free service on your application.
This service allows you to authorize electronic transfers of money to purchase
or sell shares. You use Calvert Money Controller like an "electronic check" to
move money ($50 to $300,000) between your bank account and your Calvert Group
account with one phone call. Allow one or two business days after the call for
the transfer to take place; for money recently invested, allow normal check
clearing time (up to 10 business days) before redemption proceeds are sent to
your bank.

You may also arrange systematic monthly or quarterly investments (minimum $50)
into your Calvert Group account. After you give us proper authorization, your
bank account will be debited to purchase Fund shares. A debit entry will
appear on your bank statement. Share purchases made through Calvert Money
Controller will be subject to the applicable sales charge. If you would like
to make arrangements for systematic monthly or quarterly redemptions from your
Calvert Group account, call your broker or Calvert Group for more information.

 
Telephone Transactions
Calvert may record all telephone calls.
If you have telephone transaction privileges, you may purchase, redeem, or
exchange shares, wire funds and use Calvert Money Controller by telephone. You
automatically have telephone privileges unless you elect otherwise. The Fund,
the transfer agent, the shareholder servicing 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.
 


Optional Services
Complete the account application for the easiest way to establish services.
The easiest way to establish optional services on your Calvert Group account
is to select the options you desire when you complete your account
application. If you wish to add other options later, you may have to provide
us with additional information and a signature guarantee. Please call Calvert
Investor Relations at 800-368-2745 for further assistance. For our mutual
protection, we may require a signature guarantee on certain written
transaction requests. A signature guarantee verifies the authenticity of your
signature, and may be obtained from any bank, savings and loan association,
credit union, trust company, broker/dealer firm or member of a domestic stock
exchange. A signature guarantee cannot be provided by a notary public.


 
Householding of General Mailings
Householding reduces Fund expenses while saving paper and postage expenses.
If you have multiple accounts with Calvert, you may receive combined mailings
of some shareholder information, such as statements, confirmations,
prospectuses, semi-annual and annual reports. Please contact Calvert Investor
Relations at 800-368-2745 to receive additional copies of information.
 


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

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


 
Tax-Saving Retirement Plans
Contact Calvert Group for complete information kits discussing the plans, and
their benefits, provisions and fees.
Calvert Group can set up your new account under one of several tax-deferred
plans. These plans let you invest for retirement and shelter your investment
income from current taxes. Minimums may differ from those listed in the "How
to Buy Shares" chart. Also, reduced sales charges may apply. See "Exhibit A -
Reduced Sales Charges."
o        Traditional and Roth individual retirement accounts (IRAs):
available to anyone who has earned income. You may also be able to make
investments in the name of your spouse, if your spouse has no earned income.
 

o        Qualified Profit-Sharing and Money Purchase Plans (including 401(k)
Plans):  available to self-employed people and their partners, corporations
and their employees, and certain tax-exempt organizations.

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

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


SELLING YOUR SHARES

You may redeem all or a portion of your shares on any  business  day.  Your
shares will be redeemed at the next NAV calculated after your redemption request
is received and accepted  (less any  applicable  CDSC).  See the chart below for
specific  requirements  necessary  to  make  sure  your  redemption  request  is
acceptable.  Remember  that the Fund may hold payment on the  redemption of your
shares until it is reasonably  satisfied  that  investments  made by check or by
Calvert Money Controller have been collected (normally up to 10 business days).

Redemption Requirements To Remember
To ensure acceptance of your redemption request, please follow the procedures
described here and below
Once your shares are redeemed, the proceeds will normally be sent to you on
the next business day, but if making immediate payment could adversely affect
the Fund, it may take up to seven (7) days. Calvert Money Controller
redemptions generally will be credited to your bank account on the second
business day after your phone call. When the New York Stock Exchange is closed
(or when trading is restricted) for any reason other than its customary
weekend or holiday closings, or under any emergency circumstances as
determined by the Securities and Exchange Commission, redemptions may be
suspended or payment dates postponed.


 
Minimum account balance is $1,000.
Please maintain a balance in your account of at least $1,000. If, due to
redemptions, the account falls below $1,000, or you fail to invest at least
$1,000, your account may be closed and the proceeds mailed to the address of
record. You will be given a notice that your account is below the minimum and
will be closed after 30 days if the balance is not brought up to the required
minimum amount.
 


HOW TO SELL YOUR SHARES

By Mail To: Calvert Group, P.O. Box 419544 Kansas City, MO 64141-6544
You may redeem available shares from your account at any time by sending a
letter of instruction, including your name, account and Fund number, the
number of shares or dollar amount, and where you want the money to be sent.
Additional requirements, below, may apply to your account. The letter of
instruction must be signed by all required authorized signers. If you want the
money to be wired to a bank not previously authorized, then a voided bank
check must be enclosed with your letter. To add instructions to wire to a
destination not previously established, or if you would like funds sent to a
different address or another person, your letter must be signature guaranteed.

Type of Registration       Requirements

Corporations,              Letter of instruction and a corporate resolution,
Associations               signed by person(s) authorized to act
                           on the account, accompanied signature guarantee(s).
Trusts                     Letter of instruction signed by the Trustee(s)
                           (as Trustee), with a signature guarantee.
                           (If the Trustee's name is not registered on your
                           account, provide a copy of the trust document,
                            certified within the last 60 days.)

By Telephone
Please call 800-368-2745. You may redeem shares from your account by telephone
and have your money mailed to your address of record or wired to a bank you
have previously authorized. A charge of $5 is imposed on wire transfers of
less than $1,000. See "Telephone Transactions."


Calvert Money Controller  Please allow sufficient time for Calvert Group to
process your initial request for this service  (normally 10 business days).  You
may  also  authorize   automatic  fixed  amount  redemptions  by  Calvert  Money
Controller.  All requests must be received by 4:00 p.m.  Eastern time.  Accounts
cannot be closed by this service.  Unless they  otherwise  qualify for a waiver,
Class B or Class C shares of the Fund  redeemed by Calvert Money Controller
will be subject to the Contingent Deferred Sales Charge.


Exchange to Another Calvert Group Fund
You must meet the minimum investment requirement of the other Calvert Group
Fund or Portfolio. You can only exchange between accounts with identical
names, addresses and taxpayer identification number, unless previously
authorized with a signature-guaranteed letter.


Systematic  Check  Redemptions If you maintain an account with a balance of
$10,000 or more,  you may have up to two (2) regular  checks for a fixed  amount
sent to you on the 15th of each month  simply by  sending a letter  with all the
information,  including  your  account  number,  and  the  dollar  amount  ($100
minimum).  If you would like a regular check mailed to another  person or place,
your letter must be  signature-guaranteed.  Unless they otherwise  qualify for a
waiver,  Class B or Class C shares of the Fund redeemed by Systematic Check
Redemption will be subject to the Contingent Degerred Sales Charge.


Through your Broker
If your account is held in your broker's name ("street name"), you should
contact your broker directly to transfer, exchange or redeem shares.


DIVIDENDS, CAPITAL GAINS AND TAXES

Each year,  the Fund  distributes  substantially  all of its net investment
income  and  capital  gains  to  shareholders.  Dividends  from the  Fund's  net
investment  income are  declared  and paid on a monthly  basis.  Net  investment
income consists of the interest  income,  net short-term  capital gains, if any,
and dividends declared and paid on investments, less expenses.  Distributions of
the Fund's net short-term  capital gains (treated as dividends for tax purposes)
and its net long-term  capital gains, if any, are normally  declared and paid by
the Fund once a year;  however,  the Fund does not  anticipate  making  any such
distributions  unless  available  capital loss carryovers have been used or have
expired. Dividends and distribution payments will vary between classes; dividend
payments are anticipated to be generally higher for Class A shares.


 
Dividend and Distribution Payment Options
Dividends and any distributions are automatically reinvested in the same
Portfolio at NAV (no sales charge), unless you elect to have the dividends of
$10 or more paid in cash (by check or by Calvert Money Controller). Dividends
and distributions may be automatically invested in an identically registered
account with the same account number in any other Calvert Group Fund at NAV.
If reinvested in the same Fund account, new shares will be purchased at net
asset value on the reinvestment date, which is generally 1 to 3 days prior to
the payment date. You must notify the Fund in writing prior to the record date
to change your payment options. If you elect to have dividends and/or
distributions paid in cash, and the US Postal Service cannot deliver the
check, or if it remains uncashed for six months, it, as well as future
dividends and distributions, will be reinvested in additional shares. No
dividends will accrue on amounts represented by uncashed distribution or
redemption checks.
 


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


Federal Taxes
In January, the Fund will mail you Form 1099-DIV indicating the federal tax
status of dividends and capital gain distributions paid to you by the Fund
during the past year. Generally, dividends and distributions are taxable in
the year they are paid. However, any dividends and distributions paid in
January but declared during the three months prior are taxable in the year
declared. Dividends and distributions are taxable to you regardless of whether
they are taken in cash or reinvested. Dividends, including short-term capital
gains, are taxable as ordinary income. Distributions from long-term capital
gains are taxable as long-term capital gains, regardless of how long you have
owned Fund shares.


You may realize a capital gain or loss when you sell or exchange shares.
If you sell or exchange your Fund shares you will have a short or long-term
capital gain or loss, depending on how long you owned the shares which were
sold. In January, the Fund will mail you Form 1099-B indicating the date of
and proceeds from all sales, including exchanges. You should keep your annual
year-end account statements to determine the cost (basis) of the shares to
report on your tax returns.


Other Tax Information
In addition to federal taxes, you may be subject to state or local taxes on
your investment, depending on the laws in your area. You will be notified to
the extent, if any, that dividends reflect interest received from US
government securities. Such dividends may be exempt from certain state income
taxes.


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


Exhibit A
REDUCED SALES CHARGES (Class A Only)

You may qualify for a reduced sales charge through several purchase plans
available. You must notify the Fund at the time of purchase to take advantage
of the reduced sales charge.

Right of Accumulation
The sales charge breakpoints are calculated by taking into account not only
the dollar amount of a new purchase of shares, but also the higher of cost or
current value of shares previously purchased in Calvert Group Funds that
impose sales charges. This automatically applies to your account for each new
purchase.


Letter of Intent
If you plan to purchase $50,000 or more of Fund shares over the next 13
months, your sales charge may be reduced through a "Letter of Intent." You pay
the lower sales charge applicable to the total amount you plan to invest over
the 13-month period, excluding any money market fund purchases. Part of your
shares will be held in escrow, so that if you do not invest the amount
indicated, you will have to pay the sales charge applicable to the smaller
investment actually made. For more information, see the SAI.


Group Purchases
If you are a member of a qualified group, you may purchase shares of the Fund
at the reduced sales charge applicable to the group taken as a whole. The
sales charge is calculated by taking into account not only the dollar amount
of the shares you purchase, but also the higher of cost or current value of
shares previously purchased and currently held by other members of your group.

A "qualified group" is one which (i) has been in existence for more than six
months, (ii) has a purpose other than acquiring Fund shares at a discount, and
(iii) satisfies uniform criteria which enable CDI and dealers offering Fund
shares to realize economies of scale in distributing such shares. A qualified
group must have more than 10 members, must be available to arrange for group
meetings between representatives of CDI or dealers distributing the Fund's
shares, must agree to include sales and other materials related to the Fund in
its publications and mailings to members at reduced or no cost to CDI or
dealers.

Pension plans may not qualify participants for group purchases; however, such
plans may qualify for reduced sales charges under a separate provision (see
below). Members of a group are not eligible for a Letter of Intent.


Retirement Plans Under Section 457, Section 403(b)(7), or Section 401(k)
There is no sales charge on shares purchased for the benefit of a retirement
plan under Section 457

of the Internal Revenue Code of 1986, as amended ("Code"), or for a plan
qualifying under

     Section  403(b)(7) of the Code if, at the time of purchase,  Calvert  Group
has been notified in writing that the  403(b)(7)  plan has at least 200 eligible
employees.  Furthermore,  there is no sales charge on shares  purchased  for the
benefit of a retirement plan qualifying  under Section 401(k) of the Code if, at
the time of such purchase,  the 401(k) plan  administrator  has notified Calvert
Group in writing that a) its 401(k) plan has at least 200 eligible employees; or
b) the cost or current  value of shares  the plan has in Calvert  Group of Funds
(except money market funds) is at least $1 million.

Neither the Fund, nor CDI, nor any affiliate thereof will reimburse a plan or
participant for any sales charges paid prior to receipt of such written
communication and confirmation by Calvert Group. Plan administrators should
send requests for the waiver of sales charges based on the above conditions
to:  Calvert Group Retirement Plans, 4550 Montgomery Avenue, Suite 1000N,
Bethesda, Maryland 20814.

 
Other Circumstances
There is no sales charge on shares of any fund or portfolio of the Calvert
Group of Funds sold to (i) current or retired Directors, Trustees, or Officers
of the Calvert Group of Funds, employees of Calvert Group, Ltd. and its
affiliates, or their family members; (ii) CSIF Advisory Council Members,
directors, officers, and employees of any subadvisor for the Calvert Group of
Funds, employees of broker/dealers distributing the Fund's shares and
immediate family members of the Council, subadvisor, or broker/dealer; (iii)
Purchases made through a Registered Investment Advisor, (iv) Trust departments
of banks or savings institutions for trust clients of such bank or
institution, (v) Purchases through a broker maintaining an omnibus account
with the fund or portfolio, provided the purchases are made by (a) investment
advisors or financial planners placing trades for their own accounts (or the
accounts of their clients) and who charge a management, consulting, or other
fee for their services; or (b) clients of such investment advisors or
financial planners who place trades for their own accounts if such accounts
are linked to the master account of such investment advisor or financial
planner on the books and records of the broker or agent; or (c) retirement and
deferred compensation plans and trusts, including, but not limited to, those
defined in section 401(a) or section 403(b) of the I.R.C., and "rabbi trusts."
 

Established Accounts
Shares of Calvert Income Fund may be sold at net asset value to accounts
opened on or before January 12, 1987.


Dividends and Capital Gain Distributions from other Calvert Group Funds
You may prearrange to have your dividends and capital gain distributions from
another Calvert Group Fund automatically invested in another account with no
additional sales charge.


Purchases made at Net Asset Value ("NAV")
Except for money market funds, if you make a purchase at NAV, you may exchange
that amount to another fund at no additional sales charge.


Reinstatement Privilege
If you redeem Fund shares and then within 30 days decide to reinvest in the
same Fund, you may do so at the NAV next computed after the reinvestment order
is received, without a sales charge. You may use the reinstatement privilege
only once. The Fund reserves the right to modify or eliminate this privilege.

 
Prospectus
May 31, 1998
 



CALVERT INCOME FUND

To Open an Account:
800-368-2748

Yields and Prices:
Calvert Information Network
24 hours, 7 days a week
800-368-2745

Service for Existing Account:
Shareholders  800-368-2745
Brokers  800-368-2746

TDD for Hearing Impaired:
800-541-1524

Branch Office:
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814

Registered, Certified
or Overnight Mail:
Calvert Group
c/o NFDS, 6th Floor
1004 Baltimore
Kansas City, MO 64105

Calvert Group Web Site:
http://www.calvertgroup.com

Principal Underwriter
Calvert Distributors, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814


<PAGE>

                                The Calvert Fund
                              Calvert Income Fund

                      Statement of Additional Information
                                May 31, 1998

INVESTMENT ADVISOR
Calvert Asset Management Company, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814

 
SHAREHOLDER SERVICE                    TRANSFER AGENT
Calvert Shareholder Services, Inc.     National Financial Data Services, Inc.
4550 Montgomery Avenue                 1004 Baltimore
Suite 1000N                            6th Floor
Bethesda, Maryland 20814               Kansas City, Missouri 64105
 

PRINCIPAL UNDERWRITER                  INDEPENDENT ACCOUNTANTS
Calvert Distributors, Inc.             Coopers & Lybrand, L.L.P.
4550 Montgomery Avenue                 250 West Pratt Street
Suite 1000N                            Baltimore, Maryland 21201
Bethesda, Maryland 20814


 
                           TABLE OF CONTENTS

                  Investment Objectives and Policies                      1
                  Investment Restrictions                                 8
                  Dividends and Taxes                                     9
                  Calculation of Yield and Total Return                  10
                  Net Asset Value                                        11
                  Purchase and Redemption of Shares                      12
                  Reduced Sales Charges                                  12
                  Advertising                                            13
                  Trustees and Officers                                  13
                  Investment Advisor                                     16
                  Method of Distribution                                 16
                  Transfer   and   Shareholder   Servicing
                  Agents                                                 17
                  Portfolio Transactions                                 17
                  Independent Accountants and Custodians                 17
                  General Information                                    18
                  Financial Statements                                   19
                  Control  Persons and  Principal  Holders
                  of Securities                                          19
                  Appendix                                               20
 
<PAGE>

STATEMENT OF ADDITIONAL INFORMATION May 31, 1998

                                THE CALVERT FUND
                              Calvert Income Fund
                4550 Montgomery Avenue, Bethesda, Maryland 20814

      New Account    (800) 368-2748        Shareholder    (800) 368-2745
      Information:   (301) 951-4820        Services:      (301) 951-4810
      Broker         (800) 368-2746        TDD for the Hearing-
      Services:      (301) 951-4850        Impaired:      (800) 541-1524

 
         This   Statement  of  Additional   Information  is  not  a  prospectus.
Investors  should read the Statement of Additional  Information  in  conjunction
with the Fund's  Prospectus  dated May 31, 1998,  which may be obtained free
of charge by writing the Fund at the above address or calling the Fund.
 

                       INVESTMENT OBJECTIVES AND POLICIES

         As described in the  Prospectus,  Calvert Income Fund seeks to maximize
long-term  income to the extent  consistent with prudent  investment  management
and  preservation  of  capital,  through  investment  in bonds and other  income
producing  securities  primarily  of  investment  grade  quality.  The  Fund may
invest  in debt  securities  backed  by the full  faith  and  credit of the U.S.
Government,   such  as  Government   National  Mortgage   Association   ("GNMA")
certificates,   and  may  also   invest  in  other  debt   securities   such  as
collateralized  mortgage  obligations.  There can be, of  course,  no  assurance
that the Fund will be successful in meeting its investment objective.

Collateralized Mortgage Obligations
         The Fund  may,  in  pursuit  of its  investment  objectives,  invest in
collateralized   mortgage  obligations.   Collateralized   mortgage  obligations
("CMOs") are  fully-collateralized  bonds which are general  obligations  of the
issuer of the bonds.  CMOs are not direct  obligations  of the U.S.  Government.
CMOs  generally are secured by  collateral  consisting of mortgages or a pool of
mortgages.  The  collateral  is assigned to the trustee  named in the  indenture
pursuant to which the bonds are issued.  Payments of  principal  and interest on
the underlying  mortgages are not passed  through  directly to the holder of the
CMO;  rather,  payments to the trustee are  dedicated  to payment of interest on
and  repayment  of  principal  of the CMOs.  This  means that the  character  of
payments of principal  and interest is not passed  through,  so that payments to
holders  of CMOs  attributable  to  interest  paid and  principal  repaid on the
underlying  mortgages or pool of mortgages do not necessarily  constitute income
and  return  of  capital,  respectively,  to  the  CMO  holders.  Also,  because
payments of principal and interest are not passed  through,  CMOs secured by the
same pool or  mortgages  may be, and  frequently  are,  issued with a variety of
classes  or  series,   which  have   different   maturities   and  are   retired
sequentially.  CMOs are designed to be retired as the  underlying  mortgages are
repaid.  In the event of  prepayment on such  mortgages,  the class of CMO first
to  mature  generally  will  be paid  down.  Thus  there  should  be  sufficient
collateral  to secure the CMOs that remain  outstanding  even if the issuer does
not supply additional collateral.
         FHLMC has  introduced  a CMO which is a  general  obligation  of FHLMC.
This  requires  FHLMC to use its  general  funds to make  payments on the CMO if
payments from the underlying mortgages are insufficient.

U.S. Government-Backed Obligations
         The Fund  may,  in  pursuit  of its  investment  objective,  invest  in
Ginnie Maes,  Fannie Maes,  Freddie Macs, U.S. Treasury  obligations,  and other
U.S. Government-backed obligations.
         Ginnie Maes.  Ginnie Maes,  issued by the Government  National Mortgage
Association,  are typically  interests in pools of mortgage loans insured by the
Federal Housing Administration or guaranteed by the Veterans  Administration.  A
"pool" or group of such  mortgages is assembled  and,  after approval from GNMA,
is offered to  investors  through  various  securities  dealers.  GNMA is a U.S.
Government  corporation  within the Department of Housing and Urban Development.
Ginnie  Maes are  backed by the full  faith and  credit  of the  United  States,
which means that the U.S.  Government  guarantees  that  interest and  principal
will be paid when due.
         Fannie Maes and Freddie  Macs.  Fannie Maes and Freddie Macs are issued
by the Federal  National  Mortgage  Association  ("FNMA")  and Federal Home Loan
Mortgage Corporation ("FHLMC"),  respectively.  Unlike GNMA certificates,  which
are  typically  interests  in  pools  of  mortgages  insured  or  guaranteed  by
government agencies,  FNMA and FHLMC certificates  represent undivided interests
in pools of conventional  mortgage loans.  Both FNMA and FHLMC guarantee  timely
payment of principal and interest on their  obligations,  but this  guarantee is
not  backed  by the  full  faith  and  credit  of the  U.S.  Government.  FNMA's
guarantee is supported  by its ability to borrow from the U.S.  Treasury,  while
FHLMC's  guarantee  is backed by reserves set aside to protect  holders  against
losses due to default.
         U.S.  Treasury  Obligations.  Direct  obligations  of the United States
Treasury  are backed by the full faith and  credit of the  United  States.  They
differ only with  respect to their rates of interest,  maturities,  and times of
issuance.  U.S.  Treasury  obligations  consist of: U.S.  Treasury bills (having
maturities of one year or less), U.S.  Treasury notes (having  maturities of one
to ten years ) and U.S.  Treasury bonds  (generally  having  maturities  greater
than ten years).
         Other  U.S.  Government  Obligations.  The  Fund  may  invest  in other
obligations issued or guaranteed by the U.S.  Government,  its agencies,  or its
instrumentalities.   (Certain   obligations  issued  or  guaranteed  by  a  U.S.
Government  agency or  instrumentality  may not be backed by the full  faith and
credit of the United States.)

Repurchase Agreements
         The  Fund  may,  in  pursuit  of its  investment  objectives,  purchase
securities  subject  to  repurchase   agreements.   Repurchase   agreements  are
transactions in which a person purchases a security and  simultaneously  commits
to resell  that  security  to the  seller  at a  mutually  agreed  upon time and
price.  The  seller's  obligation  is secured by the  underlying  security.  The
repurchase  price  reflects  the  initial  purchase  price  plus an agreed  upon
market rate of  interest.  While an  underlying  security may bear a maturity in
excess of one year,  the term of the  repurchase  agreement  is always less than
one  year.   Repurchase   agreements  not  terminable   within  seven  days  are
considered   illiquid.   Repurchase   agreements  are  short-term  money  market
investments, designed to generate current income.
         The Fund will only  engage in  repurchase  agreements  with  recognized
securities  dealers and banks  determined to present  minimal credit risk by the
Advisor.
         The  Fund  will  only  engage  in  repurchase   agreements   reasonably
designed  to  secure  fully  during  the  term  of the  agreement  the  seller's
obligation to  repurchase  the  underlying  security and will monitor the market
value  of the  underlying  security  during  the term of the  agreement.  If the
value of the  underlying  security  declines  and is not at  least  equal to the
repurchase  price  due to the Fund  pursuant  to the  agreement,  the Fund  will
require  the  seller  to pledge  additional  securities  or cash to  secure  the
seller's  obligations  pursuant to the agreement.  If the seller defaults on its
obligation  to repurchase  and the value of the  underlying  security  declines,
the Fund may incur a loss and may  incur  expenses  in  selling  the  underlying
security.

Non-Investment Grade Debt Securities
         The Fund may invest in lower quality debt securities  (generally  those
rated  BB or lower by S&P or Ba or lower  by  Moody's),  subject  to the  Fund's
investment  policy,  which  provides  that the Fund may not invest more than 35%
of its assets in  securities  rated below BBB or Baa by either  rating  service,
or  in  unrated  securities  determined  by  the  Advisor  to be  comparable  to
securities  rated below BBB or Baa by either rating  service.  These  securities
have moderate to poor  protection  of principal  and interest  payments and have
speculative  characteristics.  These securities  involve greater risk of default
or  price  declines  due  to  changes  in  the  issuer's  creditworthiness  than
investment-grade   debt   securities.   Because   the  market  for   lower-rated
securities  may be thinner  and less active  than for  higher-rated  securities,
there  may  be  market  price   volatility  for  these  securities  and  limited
liquidity in the resale market.  Market prices for these  securities may decline
significantly  in periods  of general  economic  difficulty  or rising  interest
rates.  Unrated  debt  securities  may fall  into the  lower  quality  category.
Unrated  securities  usually  are not  attractive  to as many  buyers  as  rated
securities are, which may make them less marketable.
         The quality  limitation  set forth in the Fund's  investment  policy is
determined immediately after the Fund's acquisition of a given security.
         When  purchasing  high-yielding  securities,   rated  or  unrated,  the
Advisor  prepare its own careful  credit  analysis to attempt to identify  those
issuers whose financial  condition is adequate to meet future  obligations or is
expected to be adequate in the future.  Through  portfolio  diversification  and
credit  analysis,  investment  risk can be  reduced,  although  there  can be no
assurance that losses will not occur.

Options and Futures Contracts
         Covered   Options.   The  Fund  may,  in  pursuit  of  its   investment
objectives,   engage  in  the  writing  of  covered  call  options  in  standard
contracts  traded  on  national  securities   exchanges  or  quoted  on  NASDAQ,
provided that:  (1) the Fund continues to own the securities  covering each call
option  until  the  call  option  has  been  exercised  or  until  the  Fund has
purchased  a  closing  call to  offset  its  obligation  to  deliver  securities
pursuant  to the call  option it had  written;  and (2) the market  value of all
securities  covering  call options in the Fund does not exceed 35% of the market
value of the Fund's net  assets.  The Fund may also write  secured  put  options
against  U.S.  Government-backed   obligations  and  uses  a  variety  of  other
investment  techniques,  seeking to hedge  against  changes in the general level
of  interest  rates,  including  the  purchase  of put and call  options on debt
securities  and the purchase and sale of interest  rate  futures  contracts  and
options on such futures.  The Fund will not engage in such  transactions for the
purpose of  speculation  or leverage.  Such  investment  policies and techniques
may involve a greater  degree of risk than those  inherent in more  conservative
investment approaches.
         The Fund will not engage in options or futures  transactions  unless it
receives  appropriate  regulatory  approvals  permitting  the Fund to  engage in
such transactions.  The Fund observes the following operating policy,  which may
be changed  without  the  approval  of a  majority  of the  outstanding  shares:
Purchase a futures  contract or an option  thereon if, with respect to positions
in futures or options on futures which do not represent  bonafide  hedging,  the
aggregate  initial  margin and premiums on such  options  would exceed 5% of the
Fund's net asset value. (See non-fundamental investment restriction number 1.)
         Covered  Options  on Debt  Securities.  The  Fund  may  write  "covered
options"  on  debt   securities  in  standard   contracts   traded  on  national
securities  exchanges and in the  over-the-counter  market.  The Fund will write
such  options in order to receive the  premiums  from options that expire and to
seek net gains from closing purchase transactions with respect to such options.
         The Fund may write only  "covered  options."  This means  that,  in the
case of call  options,  so long as the Fund is obligated as the writer of a call
option,  it will own the underlying  security  subject to the option and, in the
case  of put  options,  the  Fund  will,  through  its  custodian,  deposit  and
maintain with a securities  depository U.S.  Treasury  obligations with a market
value equal to or greater than the exercise price of the option.
         Characteristics  of Covered Options.  When a Fund writes a covered call
option,  the Fund gives the  purchaser the right to purchase the security at the
call option  price at any time  during the life of the option.  As the writer of
the option,  the Fund  receives a premium,  less a  commission,  and in exchange
foregoes  the  opportunity  to profit from any  increase in the market  value of
the security  exceeding  the call option price.  The premium  serves to mitigate
the effect of any  depreciation  in the market  value of the  security.  Writing
covered  call  options  can  increase  the  income  of the Fund and thus  reduce
declines in the net asset value per share of the Fund if  securities  covered by
such  options  decline  in value.  Exercise  of a call  option by the  purchaser
however  will cause the Fund to forego  future  appreciation  of the  securities
covered by the option.
         When the Fund  writes a secured  put  option,  it will gain a profit in
the  amount  of the  premium,  less a  commission,  so long as the  price of the
underlying  security  remains  above  the  exercise  price.  However,  the  Fund
remains  obligated to purchase  the  underlying  security  from the buyer of the
put  option  (usually  in the event the price of the  security  falls  below the
exercise  price)  at any time  during  the  option  period.  If the price of the
underlying  security  falls  below the  exercise  price,  the Fund may realize a
loss in the amount of the  difference  between the  exercise  price and the sale
price of the security, less the premium received.
         The Fund  purchases  securities  which may be covered with call options
solely  on  the  basis  of   considerations   consistent   with  the  investment
objectives and policies of the Fund.
         The  Fund's  turnover  may  increase  through  the  exercise  of a call
option;  this will generally  occur if the market value of a "covered"  security
increases and the Fund has not entered into a closing purchase transaction.
         Expiration  of a put or call  option or entry  into a closing  purchase
transaction  will  result in a  short-term  capital  gain,  unless the cost of a
closing  purchase  transaction  exceeds the premium  the Fund  received  when it
initially  wrote  the  option,  in which  case a  short-term  capital  loss will
result. If the purchaser  exercises a put or call option,  the Fund will realize
a gain or loss from the sale of the  security  acquired or sold  pursuant to the
option,  and in  determining  the gain or loss the  premium  will be included in
the proceeds of sale.  To preserve the Fund's  status as a regulated  investment
company  under  Subchapter  M of the  Internal  Revenue  Code,  it is the Fund's
policy to limit  any gains on put or call  options  and  other  securities  held
less than three months to less than 30% of the Fund's annual gross income.
         Risks  Related  to  Options  Transactions.  The Fund can  close out its
positions  in  exchange  traded  options  only on an exchange  which  provides a
secondary  market in such  options.  Although  the Fund  intends to acquire  and
write only such  exchange-traded  options for which an active  secondary  market
appears to exist,  there can be no  assurance  that such a market will exist for
any  particular  option  contract at any  particular  time.  It is  difficult to
accurately  predict  the  extent  of  trading  interest  that may  develop  with
respect  to such  options.  This  might  prevent a Fund from  closing an options
position,  which  could  impair  the  Fund's  ability  to  hedge  its  portfolio
effectively.  Also, a Fund's  inability to close out a call position may have an
adverse  effect on its  liquidity  because  the Fund may be required to hold the
securities underlying the option until the option expires or is exercised.
         The hours of trading  for  options on U.S.  Government  securities  may
not correspond  exactly to the hours of trading for the  underlying  securities.
To the  extent  that the  options  markets  close  before  the  U.S.  Government
securities markets,  significant  movements in rates and prices may occur in the
Government securities markets that cannot be reflected in the options markets.
         Interest  Rate Futures  Transactions.  A change in the general level of
interest  rates  will  affect the market  value of debt  securities  in a Fund's
portfolio.  The Fund may  purchase  and sell  interest  rate  futures  contracts
("futures   contracts")  as  a  hedge  against  changes  in  interest  rates  in
accordance  with the  strategies  described  below.  A  futures  contract  is an
agreement  between  two  parties  to buy and sell a  security  on a future  date
which has the  effect  of  establishing  the  current  price  for the  security.
Although   futures   contracts  by  their  terms  require  actual  delivery  and
acceptance  of  securities,  in most cases the  contracts  are closed out before
the  settlement  date  without the making or taking of  delivery of  securities.
Upon  purchasing  or  selling  a futures  contract,  the Fund  deposits  initial
margin with its custodian,  and thereafter daily payments of maintenance  margin
are  made to and from the  executing  broker.  Payments  of  maintenance  margin
reflect  changes  in the  value of the  futures  contract,  with the Fund  being
obligated to make such  payments if its futures  position  becomes less valuable
and entitled to receive such payments if its position becomes more valuable.
         Futures  contracts  have been  designed  by boards of trade  which have
been designated  "contract  markets" by the Commodity Futures Trading Commission
("CFTC").  As a series of a registered  investment company, the Fund is eligible
for exclusion from the CFTC's  definition of "commodity pool operator,"  meaning
that the  Fund may  invest  in  futures  contracts  under  specified  conditions
without  registering with the CFTC.  Futures contracts trade on contract markets
in a manner that is similar to the way a stock trades on a stock  exchange,  and
the  boards  of  trade,   through   their   clearing   corporations,   guarantee
performance of the contracts.
         The  purchase  and sale of  futures  contracts  is for the  purpose  of
hedging the Fund's  holdings of long-term  debt  securities.  Futures  contracts
based on U.S.  Government  securities and GNMA  Certificates  historically  have
reacted to an increase or  decrease  in  interest  rates in a manner  similar to
the  manner in which  mortgage-related  securities  reacted  to the  change.  If
interest rates increase,  the value of such  securities in the Fund's  portfolio
would  decline,  but the value of a short  position in futures  contracts  would
increase at  approximately  the same rate,  thereby  keeping the net asset value
of the Fund from declining as much as it otherwise  would have.  Thus, if a Fund
owns  long-term  securities  and interest  rates were  expected to increase,  it
might  sell  futures  contracts  rather  than  sell its  holdings  of  long-term
securities.  If, on the other hand,  the Fund held cash  reserves  and  interest
rates were  expected to decline,  the Fund might  enter into  futures  contracts
for the purchase of U.S.  Government  securities or GNMA  certificates  and thus
take  advantage of the  anticipated  risk in the value of  long-term  securities
without  actually  buying  them until the market had  stabilized.  At that time,
the futures  contracts  could be liquidated  and the Fund's cash reserves  could
then be used to buy  long-term  securities  in the cash  market.  The Fund could
accomplish  similar  results  by selling  securities  with long  maturities  and
investing in securities  with short  maturities when interest rates are expected
to  increase  or  by  buying   securities   with  long  maturities  and  selling
securities  with short  maturities  when interest rates are expected to decline.
But by using  futures  contracts as an  investment  tool to manage risk it might
be possible to accomplish the same result easily and quickly.
         Options  on Futures  Contracts.  The Fund may  purchase  and write call
and put  options on futures  contracts  which are traded on a U.S.  exchange  or
board  of trade  and  enter  into  closing  transactions  with  respect  to such
options to  terminate  an  existing  position.  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-a  long  position if the option is a call and a
short  position  if the  option is a put-at a  specified  exercise  price at any
time  during  the  period of the  option.  The Fund will pay a premium  for such
options  which it purchases.  In  connection  with such options which it writes,
the Fund will make  initial  margin  deposits  and make or  receive  maintenance
margin  payments  which  reflect  changes in the market  value of such  options.
This  arrangement  is similar to the margin  arrangements  applicable to futures
contracts described above.
         Purchase  of Put  Options on Futures  Contracts.  The  purchase  of put
options on futures  contracts is analogous to the sale of futures  contracts and
is used to protect the Fund's  portfolio of debt securities  against the risk of
declining prices.
         Purchase of Call  Options on Futures  Contracts.  The  purchase of call
options  on  futures  contracts   represents  a  means  of  obtaining  temporary
exposure  to  market  appreciation  at  limited  risk.  It is  analogous  to the
purchase of a futures  contract and is used to protect  against a market advance
when the Fund is not fully invested.
         Writing  Call  Options  on  Futures  Contracts.  The  writing  of  call
options on futures  contracts  constitutes  a partial  hedge  against  declining
prices  of the debt  securities  which  are  deliverable  upon  exercise  of the
futures  contracts.  If the futures  contract  price at  expiration is below the
exercise  price,  the Fund will  retain the full  amount of the  option  premium
which  provides a partial  hedge  against any decline that may have  occurred in
the Fund's holdings of debt securities.
         Writing  Put Options on Futures  Contracts.  The writing of put options
on futures  contracts is analogous to the purchase of futures  contracts.  If an
option is exercised,  the net cost to the Fund of the debt  securities  acquired
by it will be reduced by the amount of the option premium  received.  Of course,
if market prices have declined,  the Fund's  purchase price upon exercise may be
greater  than the price at which the debt  securities  might be purchased in the
cash market.
         Risks of Options and Futures  Contracts.  If the Fund has sold  futures
or takes  options  positions  to hedge  its  portfolio  against  decline  in the
market  and the  market  later  advances,  the  Fund  may  suffer  a loss on the
futures  contracts or options which it would not have  experienced if it had not
hedged.  The success of a hedging strategy  depends on the Advisor's  ability to
predict  the   direction  of  interest   rates  and  other   economic   factors.
Correlation is imperfect  between  movements in the prices of futures or options
contracts  and  movements in prices of the  securities  which are the subject of
the  hedge.  Thus,  the price of the  futures  contract  or option may move more
than or less than the price of the  securities  being  hedged.  If a Fund used a
futures or options  contract to hedge  against a decline in the market,  and the
market later  advances (or vice versa),  the Fund may suffer a greater loss than
if it had not hedged.
         A Fund can close  out its  futures  positions  only on an  exchange  or
board of trade which provides a secondary  market in such futures.  Although the
Fund  intends  to  purchase  or sell  only  such  futures  for  which an  active
secondary  market  appears  to  exist,  there  can be no  assurance  that such a
market will exist for any particular  futures  contract at any particular  time.
This  might  prevent  the Fund  from  closing a futures  position,  which  could
require the Fund to make daily cash  payments  with  respect to its  position in
the  event of  adverse  price  movements.  In such  situations,  if the Fund has
insufficient  cash,  it may  have to sell  portfolio  securities  to meet  daily
margin  requirements  at a time when it would be  disadvantageous  to do so. The
inability to close  futures or options  positions  could have an adverse  effect
on the Fund's  ability to hedge  effectively.  There is also risk of loss by the
Fund of margin  deposits  in the event of  bankruptcy  of a broker with whom the
Fund has an open  position in a futures  contract.  To partially  or  completely
offset losses on futures  contracts,  the Fund will normally hold the securities
against which the futures  positions were taken until the futures  positions can
be closed out, so that the Fund  receives  the gain (if any) from the  portfolio
securities. This might have an adverse effect on the Fund's overall liquidity.
         Options on futures  transactions  bear  several  risks apart from those
inherent in options  transactions  generally.  A Fund's ability to close out its
options  positions  in futures  contracts  will  depend  upon  whether an active
secondary  market for such options  develops and is in existence at the time the
Fund seeks to close its position.  There can be no assurance  that such a market
will  develop or exist.  Therefore,  the Fund might be required to exercise  the
options to realize any profit.

NONDIVERSIFIED STATUS
         The  Fund  is  a   "nondiversified"   investment   company   under  the
Investment  Act of 1940 (the "Act"),  which means the Fund is not limited by the
Act in the  proportion  of its assets that may be invested in the  securities of
a single  issuer.  A  nondiversified  fund may  invest  in a  smaller  number of
issuers than a diversified  fund.  Thus,  an  investment in the Fund may,  under
certain  circumstances,  present  greater  risk of loss to an  investor  than an
investment  in a  diversified  fund.  However,  the Fund  intends to conduct its
operations  so as to qualify  to be taxed as a  "regulated  investment  company"
for  purposes  of the Code,  which will  relieve the Fund of any  liability  for
federal income tax to the extent its earnings are  distributed to  shareholders.
To  qualify  for this  Subchapter  M tax  treatment,  the Fund  will  limit  its
investments  to satisfy the Code  diversification  requirements  so that, at the
close of each quarter of the taxable  year,  (i) not more than 25% of the fund's
assets will be invested in the  securities  of a single issuer or of two or more
issuers  which the Fund  controls and which are  determined to be engaged in the
same or similar trades or businesses or related  trades or businesses,  and (ii)
with  respect  to 50% of its  assets,  not more  than 5% of its  assets  will be
invested  in the  securities  of a single  issuer and the Fund will not own more
than 10% of the outstanding  voting  securities of a single issuer.  Investments
in United States  Government  securities  are not subject to these  limitations;
while  securities  issued or  guaranteed by foreign  governments  are subject to
the  above  tests in the  same  manner  as the  securities  of  non-governmental
issuers.   The  Fund  intends  to  comply  with  the  SEC  staff  position  that
securities  issued or  guaranteed  as to  principal  and  interest by any single
foreign  government  are  considered  to be  securities  of  issuers in the same
industry.

RESTRICTED SECURITIES
         Calvert  Income  Fund  may  invest  in  restricted  (privately  placed)
securities  and  other  securities  which  are  not  readily  marketable.   Such
securities may offer greater  potential for capital  appreciation or income than
non-restricted  securities.  The Fund may not invest in such  securities  if, at
the time of  acquisition,  such investment  would cause the total  percentage of
illiquid securities in the Fund to exceed 15% of its total assets.
         Restricted   securities  may  be  sold  only  in  privately  negotiated
transactions,  in a public  offering  for which a  registration  statement is in
effect  under the  Securities  Act of 1933 (the  "Act")  or,  where  applicable,
pursuant to Rule 144A of the Act. If  registration  is required to effect  sales
of  the  security  the  Fund  may be  obligated  to  bear  all  or  part  of the
registration  expenses  and wait until the  appropriate  registration  statement
becomes  effective  before it makes  the  sale.  If  adverse  market  conditions
develop  during such a period,  the Fund may not be able to obtain as  favorable
a price as that  prevailing  when it decided to sell. The Fund's  investments in
restricted  securities  are valued at fair value as  determined  by the  Advisor
under the supervision of the Board of Trustees.  In determining  fair value, the
market price of  comparable  securities,  if any, the book value per share,  and
other intrinsic  financial  information  regarding the issuer and the securities
will be taken into  consideration.  If, as a result of the appreciation in value
of  restricted   securities  or  the   depreciation  in  value  of  unrestricted
securities,  either  Fund's  proportion  of such assets should exceed 15% of the
value  of  its  assets,  the  Board  will  take  appropriate  steps  to  protect
liquidity.

Loans of Portfolio Securities
         The Fund may lend the  securities  from its  portfolio  to member firms
of the New York Stock Exchange and  commercial  banks with assets of one billion
dollars or more.  Any such loans  must be  secured  continuously  in the form of
cash or cash equivalents  such as U.S.  Treasury bills, the amount of collateral
must on a  current  basis  equal  or  exceed  the  market  value  of the  loaned
securities,  and the Fund must be able to terminate  such loans upon notice,  at
any time.  The Fund will  exercise its right to  terminate a securities  loan in
order to  preserve  its  right to vote  upon  matters  of  importance  affecting
holders of the  securities.  The Fund may make loans of its  securities  only if
the value of the  securities  loaned from the Fund will not exceed  one-third of
the Fund's assets.
         The  advantage of such loans is that the Fund  continues to receive the
equivalent  of the  interest  earned  or  dividends  paid by the  issuer  on the
loaned  securities  while  at the  same  time  earning  interest  on the cash or
equivalent  collateral  which may be  invested  in  accordance  with the  Fund's
investment objective, policies and restrictions.
         Securities  loans  are  usually  made  to   broker-dealers   and  other
financial  institutions to facilitate their  deliveries of such  securities.  As
with any  extension  of  credit  there  may be risks  of delay in  recovery  and
possibly  loss of rights in the loaned  securities  should the  borrower  of the
loaned  securities fail  financially.  However,  the Fund will make loans of its
portfolio  securities  only to those firms the Advisor  deems  creditworthy  and
only on such terms as the Advisor  believes should  compensate for such risk. On
termination  of the loan the borrower is obligated to return the  securities  to
the Fund;  any gain or loss in the market value of the security  during the loan
period will inure to the Fund.  The Fund may pay  reasonable  custodial  fees in
connection with the loan.

International Money Market Instruments
         Calvert  Income  Fund may,  in  pursuit  of its  investment  objective,
invest  in U.S.  dollar-denominated  obligations  of  foreign  branches  of U.S.
banks and U.S.  branches of foreign banks.  Such  obligations are not insured by
the Federal  Deposit  Insurance  Corporation.  Foreign and domestic bank reserve
requirements   may  differ.   Payment  of  interest  and  principal  upon  these
obligations  and the  marketability  and  liquidity of such  obligations  in the
secondary  market may also be affected by governmental  action in the country of
domicile of the branch  (generally  referred to as "sovereign  risk").  Examples
of  governmental  actions  would  be the  imposition  of  exchange  or  currency
controls,   interest  limitations  or  withholding  taxes  on  interest  income,
seizure  of  assets,  or the  declaration  of a  moratorium  on the  payment  of
principal  or  interest.  In  addition,  evidences  of  ownership  of  portfolio
securities  may be held outside of the U.S.,  and the Fund may be subject to the
risks associated with the holding of such property overseas.
         The  obligations  of  foreign  branches  of  U.S.  banks  and  of  U.S.
branches  of foreign  banks may be  general  obligations  of the parent  bank in
addition  to being  obligations  of the  issuing  branch,  or may be  limited to
being  an  obligation  of the  issuing  branch  by  the  terms  of the  specific
obligation  or  by  government  action  or  regulation.  Obligations  which  are
limited to being  obligations  of the issuing  branch may involve  greater risks
than  obligations  which  are  generally  obligations  of  the  parent  bank  in
addition to being obligations of the issuing branch.
         The  Fund  will  carefully   consider  these  factors  in  making  such
investments  and will  invest  no more  than 25% of the  value of its  assets in
U.S.  dollar-denominated  obligations of foreign branches of U.S. banks and U.S.
branches of foreign banks.

Corporate Bond Ratings:
Description of Moody's Investors Service Inc.'s/Standard & Poor's bond ratings:
         Aaa/AAA:  Best  quality.  These  bonds  carry  the  smallest  degree of
investment  risk  and  are  generally  referred  to  as  "gilt  edge."  Interest
payments  are  protected  by a large or by an  exceptionally  stable  margin and
principal is secure.  This rating  indicates an extremely strong capacity to pay
principal and interest.
         Aa/AA:  Bonds rated AA also qualify as high-quality  debt  obligations.
Capacity to pay  principal  and interest is very strong,  and in the majority of
instances  they  differ  from AAA issues  only in small  degree.  They are rated
lower than the best bonds because  margins of protection  may not be as large as
in  Aaa  securities,  fluctuation  of  protective  elements  may  be of  greater
amplitude,  or there may be other elements  present which make  long-term  risks
appear somewhat larger than in Aaa securities.
         A/A:  Upper-medium  grade  obligations.   Factors  giving  security  to
principal  and interest  are  considered  adequate,  but elements may be present
which  make the  bond  somewhat  more  susceptible  to the  adverse  effects  of
circumstances and economic conditions.
         Baa/BBB:  Medium grade obligations;  adequate capacity to pay principal
and interest.  Whereas they normally  exhibit  adequate  protection  parameters,
adverse economic  conditions or changing  circumstances  are more likely to lead
to a  weakened  capacity  to pay  principal  and  interest  for  bonds  in  this
category than for bonds in higher rated categories.
         Ba/BB,  B/B,  Caa/CCC,   Ca/CC:  Debt  rated  in  these  categories  is
regarded as  predominantly  speculative with respect to capacity to pay interest
and  repay  principal.  The  higher  the  degree of  speculation,  the lower the
rating.   While  such  debt  will  likely  have  some  quality  and   protective
characteristics,  these are  outweighed  by large  uncertainties  or major  risk
exposure to adverse conditions.
         C/C:  This  rating is only for  income  bonds on which no  interest  is
being paid.
         D:  Debt  in  default;  payment  of  interest  and/or  principal  is in
arrears.

Commercial Paper Ratings:
         MOODY'S INVESTORS SERVICE, INC.:
         The Prime rating is the highest  commercial  paper  rating  assigned by
Moody's.  Among the factors  considered by Moody's in assigning  ratings are the
following:  (1)  evaluation  of the  management  of  the  issuer;  (2)  economic
evaluation  of  the  issuer's   industry  or  industries  and  an  appraisal  of
speculative-type  risks which may be inherent in certain  areas;  (3) evaluation
of the issuer's  products in relation to  competition  and customer  acceptance;
(4) liquidity;  (5) amount and quality of long-term  debt; (6) trend of earnings
over a period of ten years;  (7) financial  strength of a parent company and the
relationships  which exist with the issuer;  and (8)  recognition  by management
of  obligations  which  may be  present  or may  arise  as a  result  of  public
interest  questions and  preparations to meet such  obligations.  Issuers within
this Prime  category may be given ratings 1, 2, or 3,  depending on the relative
strengths of these factors.

         STANDARD & POOR'S CORPORATION:
         Commercial  paper  rated A by  Standard  &  Poor's  has  the  following
characteristics:  (i) liquidity  ratios are adequate to meet cash  requirements;
(ii)  long-term  senior  debt  rating  should be A or better,  although  in some
cases BBB credits may be allowed if other  factors  outweigh the BBB;  (iii) the
issuer  should have  access to at least two  additional  channels of  borrowing;
(iv) basic  earnings and cash flow should have an upward  trend with  allowances
made for unusual  circumstances;  and (v) typically the issuer's industry should
be well  established  and the issuer  should have a strong  position  within its
industry and the reliability and quality of management  should be  unquestioned.
Issuers  rated A are further  referred to by use of numbers 1, 2 and 3 to denote
the relative strength within this highest classification.

                            INVESTMENT RESTRICTIONS

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

         The Fund may not:

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

         (2)      With respect to 75% of the Fund's  assets,  purchase more than
10% of the  outstanding  voting  securities  of any  issuer.  In  addition,  all
series  of the  Calvert  Fund may not  together  purchase  more  than 10% of the
outstanding voting securities of any issuer.

         (3)      Make  loans  (other  than loans of its  portfolio  securities,
loans  through  the  purchase  of  money  market   instruments   and  repurchase
agreements,  or loans  through the purchase of goods,  debentures  or other debt
securities of the types  commonly  offered  privately and purchased by financial
institutions).  The  purchase of a portion of an issue of  publicly  distributed
debt obligations shall not constitute the making of loans.

         (4)      Underwrite the securities of other issuers.

         (5)      Purchase  from  or  sell  to  any  of the  Funds  Officers  or
Trustees,  or firms of which  any of them are  members,  any  securities  (other
than  capital  stock of the Fund),  but such persons or firms may act as brokers
for the Fund.

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

         (7)      Purchase  or  retain  the  securities  of  any  issuer  if any
Officer or  Trustee  of the Fund or its  Investment  Adviser  owns  beneficially
more  than  1/2 of 1% of the  securities  of such  issuer  or if  together  such
individuals own more than 5% of the securities of such issuer.

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

         (9)      Purchase  the  securities  of  other   investment   companies,
except  as  they  may  be  acquired  as  part  of  a  merger,  consolidation  or
acquisition of assets,  or in connection  with a  trustee's/director's  deferred
compensation plan, as long as there is no duplication of advisory fees.

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

         (11)     Purchase  or  sell  physical  commodities  except  that it may
enter into futures contracts and options thereon.

         (12)     Invest in real  estate,  although it may invest in  securities
which are  secured by real  estate or real  estate  mortgages  and may invest in
the  securities  of issuers  which  invest or deal in real estate or real estate
mortgages.

NONFUNDAMENTAL INVESTMENT RESTRICTIONS

         The Fund has adopted the following  operating  (i.e.,  non-fundamental)
investment  policies  and  restrictions  which  may be  changed  by the Board of
Trustees without shareholder approval. The Fund may not:

         (1)      Purchase a futures  contract  or an option  thereon  if,  with
respect to  positions  in futures or options on futures  which do not  represent
bonafide  hedging,  the  aggregate  initial  margin and premiums on such options
would exceed 5% of the Fund's net asset value.

         (2)       Invest   in   puts,   calls,   straddles,   spread,   or  any
combination  thereof,  except to the  extent  permitted  by the  Prospectus  and
Statement of Additional Information, as each may from time to time be amended.

         (3)      Effect  short  sales or  securities,  except (a) if it owns or
has the  right  to  obtain  securities  equivalent  in kind  and  amount  to the
securities  sold  short,  or (b) it may  effect  short  sales  of U.S.  Treasury
securities  for the  limited  purpose  of  hedging  the  duration  of the Fund's
portfolio.  For purposes of this restriction,  transactions in futures contracts
and options are not deemed to constitute selling securities short.

         (4)      Purchase   securities  on  margin,   except  (1)  for  use  of
short-term  credit  necessary  for clearance of purchases and sales of portfolio
securities  and (2) it may make  margin  deposits  in  connection  with  futures
contracts or options on futures or other permissible investments.

         (5)      Invest  more  than  35% of its net  assets  in  non-investment
grade debt securities.

         (6)      Invest  more  than  20% of its  assets  in the  securities  of
foreign issuers.

         (7)      Purchase  illiquid  securities if, as a result,  more than 15%
of its net assets would be invested in such securities.

         (8)      With respect to 50% of the Funds assets,  purchase  securities
of any issuer (other than  obligations  of, or guaranteed  by, the United States
Government,  its agencies or  instrumentalities)  if, as a result,  more than 5%
of the value of the Fund's  total  assets  would be  invested in  securities  of
such issuer.

         Any  investment  restriction  which  involves a maximum  percentage  of
securities  or assets shall not be  considered  to be violated  unless an excess
over the  applicable  percentage  occurs  immediately  after and results from an
acquisition of securities or utilization of assets.

                              DIVIDENDS AND TAXES

         The Fund declares and pay  dividends  from net  investment  income on a
monthly basis.  Net  investment  income  consists of the interest  income earned
(adjusted for  amortization  of original issue or market  discounts or premiums)
and dividends  declared and paid on  investments,  less expenses.  Distributions
of net capital  gains,  if any, are normally  declared and paid by the Fund once
a year;  however,  the Fund does not intend to make any such  distributions from
securities  profits unless available capital loss carryovers,  if any, have been
used or have  expired.  Dividends  and  distributions  paid may differ among the
classes.
         Under the backup  withholding  provisions  of the Interest and Dividend
Tax  Compliance  Act of  1983,  the  Fund is  required  to  withhold  31% of any
dividends  and  capital  gains   distributions,   and  31%  of  each  redemption
transaction,   if:  (a)  the  shareholder's  social  security  number  or  other
taxpayer   identification  number  ("TIN")  is  not  provided  or  an  obviously
incorrect  TIN  is  provided;   (b)  the  shareholder  does  not  certify  under
penalties  of perjury  that the TIN  provided is the  shareholder's  correct TIN
and that the  shareholder  is not subject to backup  withholding  under  section
3406(a)(1)(C) of the Internal Revenue Code because of  underreporting  (however,
failure   to   provide   certification   as  to  the   application   of  section
3406(a)(1)(C)  will  result  only in backup  withholding  on  dividends,  not on
redemptions);  or (c) the Fund is notified by the Internal  Revenue Service that
the TIN  provided  by the  shareholder  is  incorrect  or that  there  has  been
underreporting   of  interest  or   dividends  by  the   shareholder.   Affected
shareholders  will receive  statements at least  annually  specifying the amount
withheld.
         In  addition,   the  Fund  is  required  under  the  broker   reporting
provisions  of the Tax Equity and  Fiscal  Responsibility  Act of 1982 to report
to the Internal  Revenue Service the following  information with respect to each
redemption  transaction:  (a) the shareholder's  name,  address,  account number
and  taxpayer   identification  number;  (b)  the  total  dollar  value  of  the
redemptions; and (c) the Fund's identifying CUSIP number.
         Certain  shareholders are, however,  exempt from the backup withholding
and broker reporting  requirements.  Exempt shareholders  include  corporations;
financial institutions;  tax-exempt organizations;  individual retirement plans;
the U.S.,  a State,  the  District  of  Columbia,  a U.S  possession,  a foreign
government,  an  international  organization,   or  any  political  subdivision,
agency or instrumentality of any of the foregoing;  U.S. registered  commodities
or securities  dealers;  real estate investment  trusts;  registered  investment
companies;  bank common trust funds; certain charitable trusts;  foreign central
banks of issue.  Non-resident  aliens also are  generally  not subject to either
requirement   but,  along  with  certain   foreign   partnerships   and  foreign
corporations,  may instead be subject to  withholding  under Section 1441 of the
Internal Revenue Code.  Shareholders  claiming exemption from backup withholding
and broker reporting should call or write the Fund for further information.
         Dividends and distributions  are automatically  reinvested at net asset
value in additional  shares.  Shareholders may elect to have their dividends and
distributions  paid out in cash,  or  invested  at net  asset  value in  another
Calvert Group Fund.
         Distributions  from realized net short-term  capital gains,  as well as
dividends from net investment  income,  are currently taxable to shareholders as
ordinary income.
         Net long-term  capital gains  distributions,  if any, will generally be
includable  as long-term  capital gain in the gross income of  shareholders  who
are  citizens  or  residents  of  the  United  States.   Whether  such  realized
securities  gains and losses are long-term or  short-term  depends on the period
the securities  are held by the Fund,  not the period for which the  shareholder
holds shares of the Fund.
         Dividends  and  distributions  are taxable  regardless  of whether they
are  reinvested  in additional  shares of a Fund or not. A shareholder  may also
be subject to state and local  taxes on  dividends  and  distributions  from the
Fund.  The Fund will  notify  shareholders  each  January as to the  federal tax
status  of  dividends  and  distributions  paid by the  Fund and the  amount  of
dividends withheld, if any, during the previous fiscal year.

                     CALCULATION OF YIELD AND TOTAL RETURN

YIELD
         The  Fund  may  advertise   its  "yield"  from  time  to  time.   Yield
quotations   are   historical,   and  are  not   intended  to  indicate   future
performance.    "Yield"    quotations    refer   to   the   aggregate    imputed
yield-to-maturity  of each of the Fund's  investments  based on the market value
as of the last day of a given  thirty-day  or  one-month  period,  less  accrued
expenses  (net  of  reimbursement),  divided  by the  average  daily  number  of
outstanding  shares which are entitled to receive  dividends,  times the maximum
offering  price on the last day of the  period  (so that the effect of the sales
charge is included in the  calculation),  compounded on a "bond  equivalent," or
semi-annual,  basis.  The Fund's yield is computed  according  to the  following
formula:

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

 
where a = dividends  and interest  earned  during the period using the aggregate
imputed  yield-to-maturity  for each of the Fund's investments as noted above; b
=  expenses  accrued  for the period  (net of  reimbursement,  if any);  c = the
average  daily  number  of  shares  outstanding  during  the  period  that  were
entitled to receive  dividends;  and d = the maximum offering price per share on
the last day of the period.  Using this  calculation,  the Fund's  yield for the
month ended September 30, 1997 was 4.72%.
         Yield will  fluctuate  in  response  to changes in  interest  rates and
general  economic  conditions,   portfolio  quality,   portfolio  maturity,  and
operating  expenses.  Yield  is  not  fixed  or  insured  and  therefore  is not
comparable  to a savings or other  similar  type of  account.  Yield  during any
particular  time period  should not be considered an indication of future yield.
It is,  however,  useful in  evaluating  the Fund's  performance  in meeting its
investment objective.
 

TOTAL RETURN
         The Fund may also  advertise  "total  return." Total return is computed
by  taking  the  total  number  of shares  purchased  by a  hypothetical  $1,000
investment  after deducting any applicable  sales charge,  adding all additional
shares   purchased   within   the   period   with   reinvested   dividends   and
distributions,  calculating  the value of those shares at the end of the period,
and dividing the result by the initial  $1,000  investment.  For periods of more
than one year,  the  cumulative  total return is then adjusted for the number of
years,  taking  compounding  into  account,  to calculate  average  annual total
return during that period.
         Total return is computed according to the following formula:

                                P(1 + T)n = ERV

         In the  above  formula P = a  hypothetical  initial  payment  of $1,000
(less the  maximum  sales  charge  imposed  during the period  calculated);  T =
total return;  n = number of years,  and ERV = the ending  redeemable value of a
hypothetical $1,000 payment made at the beginning of the period.
         Total  return is  historical  in nature and is not intended to indicate
future  performance.  All total return  quotations  reflect the deduction of the
Fund's  maximum sales charge  "return with maximum  load," except  quotations of
"return  without  maximum load" which do not deduct sales  charge.  Thus, in the
above  formula,  for total return,  P = the entire $1,000  hypothetical  initial
investment  and does not reflect the deduction of any sales  charge;  for actual
return,  P = a  hypothetical  initial  payment of $1,000  less any sales  charge
actually  imposed at the  beginning of the period for which the  performance  is
being  calculated.  Return figures  should be considered  only by investors that
qualify for a reduced sales charge or no sales charge,  such as  participants in
certain pension plans,  to whom the sales charge does not apply.  Return figures
may also be considered for purposes of comparison only with  comparable  figures
which also do not reflect sales charges, such as Lipper averages.
         Total  returns for the Fund's  shares for the periods  indicated are as
follows:

 
Periods Ended              Calvert Income            Calvert Income
September 30, 1997         w/o Max Load              Average Annual Return
                                                     with Maximum Load

One Year                   11.03%                    7.00%
Five Years                 6.69%                     5.88%
Ten Years                  9.41%                     8.99%
 

                                NET ASSET VALUE

 
         The net asset  value per share of the Fund,  the price at which  shares
are redeemed,  is determined  every business day as of 4:00 p.m.,  Eastern time,
and at such other times as may be  appropriate  or necessary.  The Fund does not
determine  net asset value on certain  national  holidays or other days on which
the New York Stock Exchange is closed:  New Year's Day,  Martin Luther King Day,
Presidents'  Day,  Good  Friday,  Memorial  Day,  Independence  Day,  Labor Day,
Thanksgiving Day, and Christmas Day.
         The Fund's net asset  value per share is computed  separately  for each
class by dividing the value of its total assets,  less its  liabilities,  by the
total  number  of  shares  outstanding.   Portfolio  securities  are  valued  as
follows:  (a) securities for which market  quotations are readily  available are
valued at the most recent  closing price,  mean between bid and asked price,  or
yield   equivalent  as  obtained  from  one  or  more  market  makers  for  such
securities;  (b) securities  maturing within 60 days are valued at cost, plus or
minus  any  amortized  discount  or  premium,   unless  the  Board  of  Trustees
determines such method not to be appropriate  under the  circumstances;  and (c)
all other  securities  and assets for which  market  quotations  are not readily
available are fairly  valued by the Advisor in good faith under the  supervision
of the Board of Trustees.

Net Asset Value and Offering Price Per Share

         Net asset value per share
         ($39,302,110/2,285,465 shares)          $17.20
         Maximum sales charge
         (3.75% of offering price)                 0.67
         Offering price per share                $17.87
 

                       PURCHASE AND REDEMPTION OF SHARES

     Share  certificates  will not be issued unless  requested in writing by the
investor. No charge will be made for share certificate requests. No certificates
will be issued for fractional  shares. 

     Amounts redeemed by check redemption may be mailed to the investor. Amounts
of more than $50 and less than $300,000 may be transferred electronically to the
investor.  Amounts of $1,000 or more will be  transmitted by wire by the Fund to
the  investor's  account at a domestic  commercial  bank that is a member of the
Federal Reserve System or to a correspondent  bank. A charge of $5 is imposed on
wire  transfers of less than  $1,000.  If the  investor's  bank is not a Federal
Reserve System  member,  failure of immediate  notification  to that bank by the
correspondent  bank  could  result  in a delay  in  crediting  the  funds to the
investor's bank account.  Telephone  redemption requests which would require the
redemption of shares  purchased by check or electronic funds transfer within the
previous 10 business  days may not be honored.  The Fund  reserves  the right to
modify the telephone redemption privilege.

     Certain Class B and Class C shares may be subject to a contingent  deferred
sales charge which is subtracted from the redemption  proceeds (see  Prospectus,
"Calculation of Contingent Deferred sales Charges and Waiver of Sales Charges").
Existing  shareholders  who at any time  desire  to  arrange  for the  telephone
redemption  procedure,  or to change  instructions  already  given,  must send a
written  notice either to the broker  through which the shares were purchased or
to the Fund with a voided check from the bank account to receive the  redemption
proceeds.  New wiring  instructions may be accompanied by a voided check in lieu
of  a  signature   guarantee.   Further   documentation  may  be  required  from
corporations,  fiduciaries,  pension plans,  and  institutional  investors.

     The Fund's  redemption check normally will be mailed to the investor on the
next  business day  following  the date of receipt by the Fund of the written or
telephone  redemption  request.  If the investor so instructs in the redemption
request,  the  check  will be  mailed  or the  redemption  proceeds  wired  to a
predesignated  account at the investor's bank.  Redemption proceeds are normally
paid in cash.  However,  at the sole  discretion  of the Fund,  the Fund has the
right to  redeem  shares  in  assets  other  than  cash for  redemption  amounts
exceeding,  in any 90-day  period,  $250,000 or 1% of the net asset value of the
Fund,  whichever is less,  or as allowed by law.

     The right of  redemption  of Fund  shares may be  suspended  or the date of
payment  postponed  for any period  during which the New York Stock  Exchange is
closed (other than customary weekend and holiday closings),  when trading on the
New York Stock Exchange is restricted,  or an emergency exists, as determined by
the Securities and Exchange Commission,  or if the Commission has ordered such a
suspension for the protection of shareholders.  Redemption proceeds are normally
mailed or wired the next  business  day but in no event  later  than  seven days
after a proper  redemption  request has been received,  unless  redemptions have
been suspended or postponed as described above.

                             REDUCED SALES CHARGES

         The Fund imposes  reduced sales charges in certain  situations in which
the  Principal  Underwriter  and the dealers  selling  Fund shares may expect to
realize  significant  economies of scale with respect to such sales.  Generally,
sales costs do not  increase in  proportion  to the dollar  amount of the shares
sold;  the  per-dollar  transaction  cost for a sale to an  investor  of  shares
worth,  say,  $5,000 is  generally  much higher than the  per-dollar  cost for a
sale of shares worth  $1,000,000.  Thus, the applicable sales charge declines as
a  percentage  of  the  dollar  amount  of  shares  sold  as the  dollar  amount
increases.
         When a  shareholder  agrees to make  purchases  of shares over a period
of time  totaling a certain  dollar amount  pursuant to a Letter of Intent,  the
Underwriter  and selling  dealers can expect to realize the  economies  of scale
applicable  to that stated goal  amount.  Thus the Fund imposes the sales charge
applicable to the goal amount.  Similarly,  the  Underwriter and selling dealers
also  experience  cost savings when dealing  with  existing  Fund  shareholders,
enabling the Fund to afford  existing  shareholders  the Right of  Accumulation.
The  Underwriter  and selling  dealers can also expect to realize  economies  of
scale when making sales to the members of certain  qualified  groups which agree
to facilitate  distribution  of Fund shares to their  members.  See "Exhibit A -
Reduced Sales Charges" in the Prospectus.

                                  ADVERTISING

 
         The Fund or its  affiliates  may provide  information  such as, but not
limited   to,  the   economy,   investment   climate,   investment   principles,
sociological   conditions  and  political   ambiance.   Discussion  may  include
hypothetical  scenarios  or  lists  of  relevant  factors  designed  to aid  the
investor in  determining  whether  the Fund is  compatible  with the  investor's
goals.  The Fund may list  portfolio  holdings or give  examples  or  securities
that may have been  considered for inclusion in the  Portfolio,  whether held or
not.
         The Fund or its  affiliates  may supply  comparative  performance  data
and rankings  from  independent  sources such as  Donoghue's  Money Fund Report,
Bank  Rate  Monitor,  Money,  Forbes,  Lipper  Analytical  Services,  Inc.,  CDA
Investment  Technologies,   Inc.,  Wiesenberger  Investment  Companies  Service,
Russell 2000/Small Stock Index, Mutual Fund Values Morningstar  Ratings,  Mutual
Fund Forecaster,  Barron's,  The Wall Street Journal, and Schabacker  Investment
Management,  Inc. Such averages  generally do not reflect any front- or back-end
sales charges that may be charged by Funds in that  grouping.  The Fund may also
cite to any source,  whether in print or on-line,  such as  Bloomberg,  in order
to  acknowledge  origin  of  information.  The Fund may  compare  itself  or its
portfolio holdings to other  investments,  whether or not issued or regulated by
the  securities  industry,  including,  but  not  limited  to,  certificates  of
deposit and Treasury notes.  The Fund, its Advisor,  and its affiliates  reserve
the right to update performance rankings as new rankings become available.
         Calvert Group is the nation's  leading  family of socially  responsible
mutual  funds,  both in terms of socially  responsible  mutual fund assets under
management,  and number of socially  responsible  mutual fund portfolios offered
(source:  Social  Investment Forum,  November 30, 1997).  Calvert Group was also
the first to offer a family of socially responsible mutual fund portfolios.
 

                             TRUSTEES AND OFFICERS

 
         RICHARD L. BAIRD, JR.,  Trustee.  Mr. Baird is Executive Vice President
of Family  Health  Council,  Inc.  in  Pittsburgh,  Pennsylvania,  a  non-profit
corporation which provides family planning services,  nutrition,  maternal/child
health  care,  and  various   health   screening   services.   Mr.  Baird  is  a
trustee/director  of each of the  investment  companies in the Calvert  Group of
Funds,  except  for  Acacia  Capital  Corporation,  Calvert  New World  Fund and
Calvert  World  Values  Fund.  DOB:  05/09/48.   Address:  211  Overlook  Drive,
Pittsburgh, Pennsylvania 15216.
         FRANK H. BLATZ, JR., Esq.,  Trustee.  Mr. Blatz is a partner in the law
firm of Snevily,  Ely,  Williams,  Gurrieri & Blatz.  He was  formerly a partner
with Abrams,  Blatz, Gran,  Hendricks & Reina, P.A. DOB: 10/29/35.  Address: 308
East Broad Street, PO Box 2007, Westfield, New Jersey 07091.
         FREDERICK T. BORTS,  M.D.,  Trustee.  Dr. Borts is a  radiologist  with
Kaiser  Permanente.  Prior to that,  he was a radiologist  at Bethlehem  Medical
Imaging in Allentown,  Pennsylvania.  DOB: 07/23/49. Address: 2040 Nuuanu Avenue
#1805, Honolulu, Hawaii, 96817.
         *CHARLES E. DIEHL,  Trustee.  Mr. Diehl is Vice President and Treasurer
Emeritus of the George  Washington  University,  and has retired from University
Support  Services,  Inc. of Herndon,  Virginia.  He is also a Director of Acacia
Mutual  Life  Insurance  Company.  DOB:  10/13/22.  Address:  1658 Quail  Hollow
Court, McLean, Virginia 22101.
         DOUGLAS E. FELDMAN,  M.D.,  Trustee.  Dr.  Feldman  practices  head and
neck  reconstructive  surgery in the Washington,  D.C.,  metropolitan area. DOB:
05/23/48. Address: 7536 Pepperell Drive, Bethesda, Maryland 20817.
         PETER W. GAVIAN,  CFA, Trustee.  Mr. Gavian is a principal of Gavian De
Vaux  Associates,  an  investment  banking  firm.  He was formerly  President of
Corporate  Finance of  Washington,  Inc. DOB:  12/08/32.  Address:  1953 Gallows
Road, Suite 130, Vienna, Virginia 22201.
         JOHN G. GUFFEY,  JR.,  Trustee.  Mr.  Guffey is chairman of the Calvert
Social  Investment  Foundation,  organizing  director of the  Community  Capital
Bank  in   Brooklyn,   New  York,   and  a  financial   consultant   to  various
organizations.  In addition,  he is a Director of the Community  Bankers  Mutual
Fund of Denver,  Colorado,  and the Treasurer and Director of Silby, Guffey, and
Co., Inc., a venture capital firm. Mr. Guffey is a  trustee/director  of each of
the  other  investment  companies  in the  Calvert  Group of Funds,  except  for
Acacia Capital  Corporation and Calvert New World Fund. DOB: 05/15/48.  Address:
7205 Pomander Lane, Chevy Chase, Maryland 20815.
         M.  CHARITO  KRUVANT,  Trustee.  Ms.  Kruvant is  President of Creative
Associates  International,  Inc.,  a firm that  specializes  in human  resources
development,  information  management,  public  affairs and  private  enterprise
development.  DOB: 12/08/45.  Address:  5301 Wisconsin Avenue, N.W.  Washington,
D.C. 20015.
         ARTHUR J.  PUGH,  Trustee.  Mr.  Pugh  serves as a  Director  of Acacia
Federal Savings Bank. DOB:  09/24/37.  Address:  4823 Prestwick Drive,  Fairfax,
Virginia 22030.
         *DAVID R. ROCHAT,  Senior Vice  President  and Trustee.  Mr.  Rochat is
Executive Vice President of Calvert Asset  Management  Company,  Inc.,  Director
and  Secretary of Grady,  Berwald and Co.,  Inc.,  and Director and President of
Chelsea  Securities,  Inc. DOB:  10/07/37.  Address:  Box 93,  Chelsea,  Vermont
05038.
         *D. WAYNE SILBY,  Esq.,  Trustee.  Mr. Silby is a  trustee/director  of
each of the  investment  companies  in the  Calvert  Group of Funds,  except for
Acacia  Capital  Corporation  and  Calvert  New  World  Fund.  Mr.  Silby  is an
officer,  director  and  shareholder  of Silby,  Guffey & Company,  Inc.,  which
serves as general partner of Calvert Social Venture Partners  ("CSVP").  CSVP is
a venture capital firm investing in socially  responsible  small  companies.  He
is also a Director  of Acacia  Mutual Life  Insurance  Company.  DOB:  07/20/48.
Address: 1715 18th Street, N.W., Washington, D.C. 20009.
         *BARBARA J. KRUMSIEK,  President and Trustee.  Ms.  Krumsiek  serves as
President,  Chief  Executive  Officer and Vice Chairman of Calvert  Group,  Ltd.
and as an officer and  director of each of its  affiliated  companies.  She is a
director of Calvert-Sloan  Advisers,  L.L.C., and a trustee/director  of each of
the investment companies in the Calvert Group of Funds. DOB: 08/09/52.
         RENO J.  MARTINI,  Senior Vice  President.  Mr.  Martini is Senior Vice
President  of  Calvert  Group,   Ltd.,  and  Senior  Vice  President  and  Chief
Investment  Officer of Calvert Asset  Management  Company,  Inc. Mr.  Martini is
also  a  director  and  President  of  Calvert-Sloan  Advisers,  L.L.C.,  and  a
director and officer of Calvert New World Fund. DOB: 01/13/50.
         RONALD M. WOLFSHEIMER,  CPA, Treasurer.  Mr. Wolfsheimer is Senior Vice
President and  Controller of Calvert  Group,  Ltd. and its  subsidiaries  and an
officer  of each of the  other  investment  companies  in the  Calvert  Group of
Funds.  Mr.  Wolfsheimer  is  Vice  President  and  Treasurer  of  Calvert-Sloan
Advisers, L.L.C., and a director of Calvert Distributors, Inc. DOB: 07/24/52.
         WILLIAM M.  TARTIKOFF,  Esq.,  Vice President and Assistant  Secretary.
Mr.  Tartikoff is an officer of each of the investment  companies in the Calvert
Group of Funds,  and is Senior Vice  President,  Secretary,  and General Counsel
of Calvert Group,  Ltd.,  and each of its  subsidiaries.  Mr.  Tartikoff is also
Vice President and Secretary of  Calvert-Sloan  Advisers,  L.L.C., a director of
Calvert  Distributors,   Inc.,  and  is  an  officer  of  Acacia  National  Life
Insurance Company. DOB: 08/12/47.
         DANIEL  K.  HAYES,  Vice  President.  Mr.  Hayes is Vice  President  of
Calvert Asset Management  Company,  Inc., and is an officer of each of the other
investment  companies  in the  Calvert  Group of Funds,  except for  Calvert New
World Fund, Inc. DOB: 09/09/50.
         SUSAN  WALKER  BENDER,  Esq.,   Assistant  Secretary.   Ms.  Bender  is
Associate  General  Counsel  of  Calvert  Group  and an  officer  of each of its
subsidiaries and Calvert-Sloan  Advisers,  L.L.C. She is also an officer of each
of the other investment companies in the Calvert Group of Funds. DOB: 01/29/59.
          BETH-ANN  ROTHKATHERINE STONER, Esq., Assistant Secretary.  Ms. Stoner
is  Associate  General  Counsel of  Calvert  Group and an officer of each of its
subsidiaries and Calvert-Sloan  Advisers,  L.L.C. She is also an officer of each
of the other investment companies in the Calvert Group of Funds. DOB: 10/21/56.
         LISA CROSSLEY,  Esq.,  Assistant Secretary and Compliance Officer.  Ms.
Crossley is Associate  General  Counsel of Calvert  Group and an officer of each
of its subsidiaries and  Calvert-Sloan  Advisers,  L.L.C. She is also an officer
of each of the other  investment  companies in the Calvert Group of Funds.  DOB:
12/31/61.
         IVY WAFFORD  DUKE,  Esq.,  Assistant  Secretary.  Ms. Duke is Assistant
Counsel  of  Calvert  Group  and an  officer  of  each of its  subsidiaries  and
Calvert-Sloan  Advisers,  L.L.C.  She is also an  officer  of each of the  other
investment companies in the Calvert Group of Funds. DOB: 09/07/68.

         The address of directors  and  officers,  unless  otherwise  noted,  is
4550 Montgomery  Avenue,  Suite 1000N,  Bethesda,  Maryland 20814.  Trustees and
officers  of the Fund as a group  own  less  than 1% of the  Fund's  outstanding
shares.  Trustees  marked  with an *,  above,  are  "interested  persons" of the
Fund, under the Investment Company Act of 1940.
         Each   of   the   above    directors/trustees   and   officers   is   a
director/trustee  or officer of each of the investment  companies in the Calvert
Group of Funds with the exception of Calvert  Social  Investment  Fund, of which
only Messrs.  Baird,  Guffey and Silby and Ms.  Krumsiek are among the trustees,
Acacia  Capital  Corporation,  of which only Messrs.  Blatz,  Diehl and Pugh and
Ms.  Krumsiek are among the  directors,  Calvert  World Values  Fund,  Inc.,  of
which only Messrs.  Guffey and Silby and Ms.  Krumsiek are among the  directors,
and Calvert New World Fund,  Inc.,  of which only Ms.  Krumsiek and Mr.  Martini
are among the directors.
         The Audit Committee of the Board is composed of Messrs.  Baird,  Blatz,
Feldman,  Guffey and Pugh. The Board's  Investment  Policy Committee is composed
of Messrs. Borts, Diehl, Gavian, Rochat and Silby and Ms. Krumsiek.
         During  fiscal  1997,  trustees  of the  Fund not  affiliated  with the
Fund's Advisor were paid $5,468.  Trustees of the Fund not  affiliated  with the
Advisor  presently  receive an annual fee of $20,500  for service as a member of
the  Board of  Trustees  of the  Calvert  Group of  Funds,  and a fee of $750 to
$1,500 for each  regular  Board or  Committee  meeting  attended;  such fees are
allocated among the respective Funds on the basis of net assets.
         Trustees of the Fund not  affiliated  with the Fund's Advisor may elect
to defer  receipt of all or a  percentage  of their fees and invest  them in any
fund in the Calvert Family of Funds through the Trustees  Deferred  Compensation
Plan  (shown  as  "Pension  or  Retirement  Benefits  Accrued  as  part  of Fund
Expenses,"  below).  Deferral of the fees is designed to maintain the parties in
the same  position  as if the fees  were  paid on a  current  basis.  Management
believes this will have a negligible  effect on the Fund's assets,  liabilities,
net  assets,  and net  income  per  share,  and  will  ensure  that  there is no
duplication of advisory fees.
 

                           Trustee Compensation Table

Fiscal Year 1997          Aggregate          Pension            Total
(unaudited numbers)       Compensation       or                 Compensation
                          from               Retirement         from
                          Registrant         Benefits           Registrant
                          for Service        Accrued as         and Fund
                          as Trustee         Part of            Complex
                                             Registrant         Paid to
                                             Expenses*          Trustee**
Name of Trustee

 
Richard L. Baird, Jr.     $1,779             $0                 $34,450
Frank H. Blatz, Jr.       $2,121             $2,121             $46,000
Frederick T. Borts        $1,772             $0                 $32,500
Charles E. Diehl          $2,034             $2,019             $44,500
Douglas E. Feldman        $1,962             $0                 $32,500
Peter W. Gavian           $1,997             $770               $38,500
John G. Guffey, Jr.       $1,984             $0                 $61,615
M. Charito Kruvant        $1,779             $0                 $36,250
Arthur J. Pugh            $2,306             $65                $48,250
D. Wayne Silby            $1,779             $0                 $62,830

*Messrs. Blatz, Diehl, Gavian and Pugh have chosen to defer a portion of their
compensation. As of September 30, 1997, total deferred compensation, including
dividends and capital appreciation, was $542,400.28, $550,026.46, $132,815.21,
and $195,548.47, for each trustee, respectively.
**As of December 31, 1997, the Fund Complex consists of nine (9) registered
investment companies.
 

                               INVESTMENT ADVISOR

 
         The  Calvert  Fund's  Investment  Advisor is Calvert  Asset  Management
Company,  Inc., 4550 Montgomery Avenue,  Bethesda,  Maryland 20814, a subsidiary
of Calvert  Group,  Ltd.,  which is a subsidiary of Acacia Mutual Life Insurance
Company of Washington, D.C. ("Acacia Mutual").
         The  Advisory  Contract  between The Calvert  Fund and the Advisor will
remain  in effect  until  January  3,  1998,  and from year to year  thereafter,
provided  continuance  is approved at least annually by vote of the holders of a
majority  of the  outstanding  shares of the Fund or by the Board of Trustees of
the Fund; and further provided that such  continuance is also approved  annually
by the vote of a majority  of the  trustees  of the Fund who are not  parties to
the  Contract or  interested  persons of parties to the  Contract or  interested
persons of such parties,  cast in person at a meeting  called for the purpose of
voting on such  approval.  The Contract  may be  terminated  without  penalty by
either party upon 60 days' prior written  notice;  it  automatically  terminates
in the event of its assignment.
         Under the  Contract,  the  Advisor  provides  investment  advice to The
Calvert Fund and oversees the  day-to-day  operations,  subject to direction and
control  by the  Fund's  Board  of  Trustees.  For  its  services,  the  Advisor
receives  an annual  fee of 0.70% of the  average  daily net  assets of  Calvert
Income Fund.
         The Advisor  provides  the Fund with  investment  advice and  research,
office space,  administrative services,  furnishes executive and other personnel
to the Fund,  pays the  salaries  and fees of all  trustees  who are  affiliated
persons  of  the  Advisor,   and  pays  all  Fund  advertising  and  promotional
expenses.  The  Advisor  reserves  the  right to  compensate  broker-dealers  in
consideration of their  promotional or  administrative  services.  The Fund pays
all other  operating  expenses,  including  custodial and transfer  agency fees,
federal  and state  securities  registration  fees,  legal and audit  fees,  and
brokerage  commissions and other costs  associated with the purchase and sale of
portfolio securities.
         For the  fiscal  years  ended  September  30,  1995,  1996,  and  1997,
Calvert  Income Fund paid  advisory  fees of $307,737,  $311,154,  and $290,440,
respectively.
 

                             METHOD OF DISTRIBUTION

 
     The Fund has entered into an  agreement  with  Calvert  Distributors,  Inc.
("CDI")  whereby CDI,  acting as  principal  underwriter  for the Fund,  makes a
continuous  offering of the Fund's  securities on a "best efforts" basis.  Under
the terms of the agreement,  CDI is entitled to receive a distribution  fee from
Calvert  Income Fund of 0.25% of the Fund's  average  daily net assets.  For the
fiscal  years  ended  September  30,  1995,   1996,  and  1997,  the  Fund  paid
Distribution Plan expenses of $64,981, $64,681, and $62,090,  respectively.  For
Class B and Class C shares, CDI receives any CDSC paid.

     In fiscal year 1997, most of this was used to compensate  dealers for their
share distribution  promotional services, while the remainder partially financed
the printing and mailing of prospectuses and sales materials to investors (other
than current shareholders).

     For the Funds' shares, CDI also receives the portion of the sales charge in
excess of the dealer  reallowance.  For fiscal years 1995,  1996,  and 1997, CDI
received  net  Class  A  sales   charges  of  $7,656,   $15,770,   and  $11,470,
respectively.

     Pursuant to Rule 12b-1 under the  Investment  Company Act of 1940, The Fund
has adopted Class A, B, and C Distribution Plans which permits it to pay certain
fees associated with the  distribution of its shares.  Such fees may not exceed,
on an annual basis,  0.50%,  1.00%, and 1.00% of the average daily net assets of
Class A, B, and C respectively.

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

     The Plans may be  terminated  by vote of a majority  of the  non-interested
Trustees who have no direct or indirect  financial  interest in the Plans, or by
vote of a  majority  of the  outstanding  shares of the Fund.  Any change in the
Plans that would materially  increase the distribution cost to the Fund requires
approval of the shareholders of the affected class; otherwise,  the Plans may be
amended by the Trustees,  including a majority of the non-interested Trustees as
described above.

     The Plans will  continue  in effect  until  January 3, 1998,  if not sooner
terminated in accordance with its terms. Thereafter,  the Plans will continue in
effect  for  successive  one-year  periods  provided  that such  continuance  is
specifically  approved by (i) the vote of a majority of the Trustees who are not
parties  to the Plans or  interested  persons  of any such party and who have no
direct or  indirect  financial  interest  in the  Plans,  and (ii) the vote of a
majority of the entire Board of Trustees.

     Apart from the Plans, the Advisor, at its expense,  may incur costs and pay
expenses  associated  with the  distribution  of  shares of the  Funds.  Certain
broker-dealers,   and/or  other  persons  may  receive   compensation  from  the
investment  advisor,   underwriter,   or  their  affiliates  for  the  sale  and
distribution  of the securities or for services to the Fund.  Such  compensation
may  include  additional  compensation  based on assets held  through  that firm
beyond the regularly  scheduled  rates, and finder's fee payments to firms whose
representatives   are  responsible  for  soliciting  a  new  account  where  the
accountholder does not choose to purchase through that firm.  

                   TRANSFER AND SHAREHOLDER SERVICING AGENTS

 
         National  Financial  Data  Services,  Inc.  ("NFDS"),  a subsidiary  of
State  Street  Bank & Trust,  has been  retained  by the Fund to act as transfer
agent  and  dividend   disbursing   agent.   These   responsibilities   include:
responding  to certain  shareholder  inquiries and  instructions,  crediting and
debiting  shareholder  accounts for purchases and redemptions of Fund shares and
confirming  such  transactions,  and daily updating of  shareholder  accounts to
reflect declaration and payment of dividends.
         Calvert  Shareholder  Services,  Inc., a subsidiary  of Calvert  Group,
Ltd.,  and Acacia  Mutual,  has been retained by the Fund to act as  shareholder
servicing agent.  Shareholder servicing  responsibilities  include responding to
shareholder inquiries and instructions  concerning their accounts,  entering any
telephoned  purchases  or  redemptions  into the  NFDS  system,  maintenance  of
broker-dealer  data, and preparing and  distributing  statements to shareholders
regarding  their  accounts.  Calvert  Shareholder  Services,  Inc.  was the sole
transfer agent prior to January 1, 1998.
         For  these  services,  NFDS  and  Calvert  Shareholder  Services,  Inc.
receive  a  total  fee  of  $14.00  per   shareholder   account  and  $1.60  per
shareholder transaction.
 

                             PORTFOLIO TRANSACTIONS

 
         Portfolio   transactions   are   undertaken   on  the  basis  of  their
desirability from an investment  standpoint.  Investment decisions and choice of
brokers  and  dealers  are  made  by  the  Advisor   under  the   direction  and
supervision of the Board of Trustees.
         For the  years  ended  September  30,  1996  and  1997,  the  portfolio
turnover rates of Calvert Income Fund were 153% and 2,961%, respectively.
         In all  transactions,  the Fund seeks to obtain the best price and most
favorable   execution  and  selects   broker-dealers   on  the  basis  of  their
professional   capability   and  the  value  and  quality  of  their   services.
Broker-dealers   may  be  selected  who  provide  the  Fund  with   statistical,
research,  or other information and services.  Such  broker-dealers  may receive
compensation  for  executing  portfolio  transactions  that is in  excess of the
compensation  another  broker-dealer  would have  received  for  executing  such
transactions if the Advisor  determines in good faith that such  compensation is
reasonable  in relation to the value of the  information  or services  provided.
Although any  statistical,  research or other  information or services  provided
by  broker-dealers  may be useful to the Advisor,  its dollar value is generally
indeterminable  and its  availability or receipt does not materially  reduce the
Advisor's normal research activities or expenses.
         During  the  fiscal  years  ended  September  30,  1995  and  1997,  no
brokerage  commissions  were paid by Calvert  Income Fund to any  broker-dealer,
officers  or trustees of The  Calvert  Fund or any of their  affiliates.  During
the fiscal year 1996, $1,000 in aggregate  brokerage  commissions were paid to a
broker-dealer.
 

                     INDEPENDENT ACCOUNTANTS AND CUSTODIANS

 
         Coopers & Lybrand,  L.L.P.,  has been selected by the Board of Trustees
to serve as independent  accountants  for fiscal year 1998.  State Street Bank &
Trust Company,  N.A., 225 Franklin Street,  Boston,  MA 02110,  currently serves
as custodian of the Fund's  investments.  First  National  Bank of Maryland,  25
South  Charles  Street,  Baltimore,  Maryland  21203 also serves as custodian of
certain of the Fund's cash  assets.  The  custodian  has no part in deciding the
Fund's  investment  policies  or  the  choice  of  securities  that  are  to  be
purchased or sold for the Fund's Portfolios.
 

                              GENERAL INFORMATION

         The  Calvert  Fund  (the  "Trust")  was  organized  as a  Massachusetts
business  trust on March 15, 1982.  The Calvert  Fund's series  include  Calvert
Income  Fund  and  Calvert  New  Vision  Small  Cap  Fund.  The  Calvert  Fund's
Declaration  of Trust contains an express  disclaimer of  shareholder  liability
for acts or  obligations  of the  Trust.  The  shareholders  of a  Massachusetts
business trust might, however, under certain  circumstances,  be held personally
liable as partners for its  obligations.  The  Declaration of Trust provides for
indemnification  and  reimbursement  of expenses  out of the Trust's  assets for
any  shareholder  held  personally  liable for  obligations  of the  Trust.  The
Declaration  of Trust  provides that the Trust shall,  upon request,  assume the
defense of any claim made against any  shareholder  for any act or obligation of
the Trust and satisfy any judgment  thereon.  The  Declaration  of Trust further
provides  that the  Trust  may  maintain  appropriate  insurance  (for  example,
fidelity  bonding and errors and omissions  insurance) for the protection of the
Trust,  its  shareholders,  trustees,  officers,  employees  and agents to cover
possible tort and other liabilities.  Thus, the risk of a shareholder  incurring
financial loss on account of shareholder  liability is limited to  circumstances
in which both  inadequate  insurance  exists  and the Trust  itself is unable to
meet its obligations.
     The Fund offers  three  separate  classes of shares:  Class A, Class B, and
Class C. Each class  represents  interests in the same  portfolio of investments
but, as further described in the prospectus,  each class is subject to differing
sales  charges and expenses,  which  differences  will result in differing  net
asset value and distributions.  Upon any liquidation of the Fund,  shareholders
of each class are entitled to share pro rata in the net assets belonging to that
series available for distribution. 
         The  Fund  will  send   shareholders   confirmations  of  purchase  and
redemption  transactions,   as  well  as  periodic  transaction  statements  and
unaudited  semi-annual  and audited  annual  financial  statements of the Fund's
investment  securities,  assets  and  liabilities,   income  and  expenses,  and
changes in net assets.
         The  Prospectus  and this  Statement of Additional  Information  do not
contain  all  the  information  in  the  Trust's  registration  statement.   The
registration  statement is on file with the Securities  and Exchange  Commission
and is available to the public.

                              FINANCIAL STATEMENTS

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

              CONTROL PERSONS AND PRINCIPAL HOLDERS OF SECURITIES

 
         As of January 2, 1998,  the  following  shareholder  owned of record 5%
or more of the Fund:

         Name and Address                   % of Ownership
         State of Tennessee 401K Plan       5.59%
         Attn: Juanita Spicers
         500 Deaderick 10th Flr
         Andrew Jackson Building
         Nashville, TN 37242-0001
 


                                    APPENDIX

                                LETTER OF INTENT



         
Date

Calvert Distributors, Inc.
4550 Montgomery Avenue
Bethesda, MD 20814

Ladies and Gentlemen:

         By signing this Letter of Intent, or affirmatively marking the Letter
of Intent option on my Fund Account Application Form, I agree to be bound by
the terms and conditions applicable to Letters of Intent appearing in the
Prospectus and the Statement of Additional Information for the Fund and the
provisions described below as they may be amended from time to time by the
Fund. Such amendments will apply automatically to existing Letters of Intent.

         I intend to invest in the shares of:                         
(Fund or Portfolio name) during the thirteen (13) month period from the date
of my first purchase pursuant to this Letter (which cannot be more than ninety
(90) days prior to the date of this Letter or my Fund Account Application
Form, whichever is applicable), an aggregate amount (excluding any
reinvestments of distributions) of at least fifty thousand dollars ($50,000)
which, together with my current holdings of the Fund (at public offering price
on date of this Letter or my Fund Account Application Form, whichever is
applicable), will equal or exceed the amount checked below:

         __ $50,000 __ $100,000 __ $250,000 __ $500,000 __ $1,000,000

         Subject to the conditions specified below, including the terms of
escrow, to which I hereby agree, each purchase occurring after the date of
this Letter will be made at the public offering price applicable to a single
transaction of the dollar amount specified above, as described in the Fund's
prospectus. "Fund" in this Letter of Intent shall refer to the Fund or
Portfolio, as the case may be, here indicated. No portion of the sales charge
imposed on purchases made prior to the date of this Letter will be refunded.

         I am making no commitment to purchase shares, but if my purchases
within thirteen months from the date of my first purchase do not aggregate the
minimum amount specified above, I will pay the increased amount of sales
charges prescribed in the terms of escrow described below. I understand that
4.75% of the minimum dollar amount specified above will be held in escrow in
the form of shares (computed to the nearest full share). These shares will be
held subject to the terms of escrow described below.

         From the initial purchase (or subsequent purchases if necessary),
4.75% of the dollar amount specified in this Letter shall be held in escrow in
shares of the Fund by the Fund's transfer agent. For example, if the minimum
amount specified under the Letter is $50,000, the escrow shall be shares
valued in the amount of $2,375 (computed at the public offering price adjusted
for a $50,000 purchase). All dividends and any capital gains distribution on
the escrowed shares will be credited to my account.

         If the total minimum investment specified under the Letter is
completed within a thirteen month period, escrowed shares will be promptly
released to me. However, shares disposed of prior to completion of the
purchase requirement under the Letter will be deducted from the amount
required to complete the investment commitment.

         Upon expiration of this Letter, the total purchases pursuant to the
Letter are less than the amount specified in the Letter as the intended
aggregate purchases, Calvert Distributors, Inc. ("CDI") will bill me for an
amount equal to the difference between the lower load I paid and the dollar
amount of sales charges which I would have paid if the total amount purchased
had been made at a single time. If not paid by the investor within 20 days,
CDI will debit the difference from my account. Full shares, if any, remaining
in escrow after the aforementioned adjustment will be released and, upon
request, remitted to me.

         I irrevocably constitute and appoint CDI as my attorney-in-fact, with
full power of substitution, to surrender for redemption any or all escrowed
shares on the books of the Fund. This power of attorney is coupled with an
interest.

         The commission allowed by Calvert Distributors, Inc. to the
broker-dealer named herein shall be at the rate applicable to the minimum
amount of my specified intended purchases.

         The Letter may be revised upward by me at any time during the
thirteen-month period, and such a revision will be treated as a new Letter,
except that the thirteen-month period during which the purchase must be made
will remain unchanged and there will be no retroactive reduction of the sales
charges paid on prior purchases.

         In determining the total amount of purchases made hereunder, shares
disposed of prior to termination of this Letter will be deducted. My
broker-dealer shall refer to this Letter of Intent in placing any future
purchase orders for me while this Letter is in effect.

                                                     
Dealer


By                                                   
     Authorized Signer

                                                     
Date

                                                     
Date

         
Name of Investor(s)


         
Address

         
Signature of Investor(s)

         
Signature of Investor(s)

- --------

<PAGE>
PART C. OTHER INFORMATION


Item 24. Financial Statements and Exhibits

         (a) Financial statements

         Financial statements incorporated by reference to:

         All financial statements for The Calvert Fund, Income
         Fund are incorporated by reference to Registrant's
         Annual Report to Shareholders dated September 30, 1997,
         and filed December 16, 1997.

         Schedules II-VII, inclusive, for which provision is made
         in the applicable accounting regulation of the
         Securities and Exchange Commission, are omitted because
         they are not required under the related instructions,
         or they are inapplicable, or the required information
         is presented in the financial statements or notes
         thereto.

         (b) Exhibits:

         1. Declaration of Trust (incorporated by reference to Registrant's
Initial
         Registration Statement, March 15, 1982).

         2. By-Laws (incorporated by reference to Registrant's Pre-Effective
         Amendment No. 2, September 3, 1982).

         4. Specimen Stock Certificate for all series of The Calvert Fund
         (incorporated by reference to Registrant's Post-Effective Amendment
         No. 28, July 19, 1995).

         5.a. Advisory Contract (incorporated by reference to Registrant's
Post-
         Effective Amendment No. 3, November 1, 1984).

         6. Underwriting and Dealer Agreement, (incorporated by reference to
         Registrant's Post-Effective Amendment No. 34, March 31, 1998).

         7. Trustees' Deferred Compensation Agreement (incorporated by
         reference to Registrant's Post-Effective Amendment No. 20, January
         28, 1992).

         8. Custodial Contract (incorporated by reference to Registrant's Post-
         Effective Amendment No. 21, January 29, 1993).

         9. Transfer Agency Contract, (incorporated by reference to
         Registrant's Post-Effective Amendment No. 34, March 31, 1998).

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

         11. Consent of Independent Accountants.

         14. Retirement Plans (incorporated by reference to Registrant's Post-
         Effective Amendment No. 20, January 28, 1992).

         15. Rule 12b-1 Distribution Plan with respect to Registrant's Class B
         and C shares, incorporated by reference to Registrant's Post-Effective
         Amendment No. 34, March 31, 1998. With respect to Class A shares,
         incorporated by reference to Registrant's Post-Effective Amendment
         No. 28, July 19, 1995, for all series of The Calvert Fund.

         16. Schedule for computation of performance quotation (incorporated
         by reference to Registrant's Post-effective Amendment No. 14, January
         25, 1989).

         17.(ii) Financial Data Schedules, filed herewith.

         18. Multiple-class Plan under the Investment Company Act of 1940
         Rule 18f-3, (incorporated by reference to Registrant's Post-Effective
         Amendment No. 34, March 31, 1998).

         Exhibits 3, 12 and 13 are omitted because they are inapplicable.

Item 25. Persons Controlled By or Under Common Control With Registrant

         Not applicable.

Item 26. Number of Holders of Securities

         As of February 28, 1998, there were 2,715 holders of record of
Registrant's Class A shares of beneficial interest for Calvert Income Fund.

         As of February 28, 1998, there were 11,858 holders of record of
Registrant's Class A shares of beneficial interest for Calvert New Vision
Small Cap Fund.

         As of February 28, 1998, there were 1,477 holders of record of
Registrant's Class C shares of beneficial interest for Calvert New Vision
Small Cap Fund.

Item 27. Indemnification

         Registrant's Declaration of Trust, which Declaration is Exhibit
1 of this Registration Statement, provides, in summary, that officers,
trustees, employees, and agents shall be indemnified by Registrant
against liabilities and expenses incurred by such persons in connection
with actions, suits, or proceedings arising out of their offices or
duties of employment, except that no indemnification can be made to such
a person if he has been adjudged liable of willful misfeasance, bad
faith, gross negligence, or reckless disregard of his duties. In the
absence of such an adjudication, the determination of eligibility for
indemnification shall be made by independent counsel in a written
opinion or by the vote of a majority of a quorum of trustees who are
neither "interested persons" of Registrant, as that term is defined in
Section 2(a)(19) of the Investment Company Act of 1940, nor parties to
the proceeding.

         Registrant's Declaration of Trust also provides that Registrant
may purchase and maintain liability insurance on behalf of any officer,
trustee, employee or agent against any liabilities arising from such
status. In this regard, Registrant maintains a Directors & Officers
(Partners) Liability Insurance Policy with Chubb Group of Insurance
Companies, 15 Mountain View Road, Warren, New Jersey 07061, providing
Registrant with $5 million in directors and officers liability coverage,
plus $3 million in excess directors and officers liability coverage for
the independent trustees/directors only. Registrant also maintains an
$8 million Investment Company Blanket Bond issued by ICI Mutual
Insurance Company, P.O. Box 730, Burlington, Vermont, 05402.

Item 28. Business and Other Connections of Investment Adviser

                           Name of Company, Principal
Name                       Business and Address                   Capacity


Barbara J. Krumsiek        Calvert Variable Series, Inc.             Officer
                           Calvert Municipal Fund, Inc.            and
                           Calvert World Values Fund, Inc.        Director

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           First Variable Rate Fund for           Officer
                            Government Income                      and
                           Calvert Tax-Free Reserves              Trustee
                           Calvert Social Investment Fund
                           Calvert Cash Reserves
                           The Calvert Fund

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Asset Management Co., Inc.     Officer
                           Investment Advisor                      and
                           4550 Montgomery Avenue                 Director
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Group, Ltd.                    Officer
                           Holding Company                         and
                           4550 Montgomery Avenue                 Director
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Shareholder Services, Inc.     Officer
                           Transfer Agent                          and
                           4550 Montgomery Avenue                 Director
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Administrative Services Co.    Officer
                           Service Company                        and
                           4550 Montgomery Avenue                 Director
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Distributors, Inc.             Officer
                           Broker-Dealer                           and
                           4550 Montgomery Avenue                 Director
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert-Sloan Advisers, LLC            Director
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert New World Fund, Inc.           Director
                           Investment Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           --------------
                           Alliance Capital Mgmt. L.P.      Sr. Vice President
                           Mutual Fund Division                   Director
                           1345 Avenue of the Americas
                           New York, NY 10105
                           --------------


Ronald M. Wolfsheimer      First Variable Rate Fund               Officer
                            for Government Income
                           Calvert Tax-Free Reserves
                           Calvert Cash Reserves
                           Calvert Social Investment Fund
                           The Calvert Fund
                           Calvert Variable Series, Inc.
                           Calvert Municipal Fund, Inc.
                           Calvert World Values Fund, Inc.
                           Calvert New World Fund, Inc.

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           --------------
                           Calvert Asset Management Co., Inc.     Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Group, Ltd.                    Officer
                           Holding Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Shareholder Services, Inc.     Officer
                           Transfer Agent
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Administrative Services Co.    Officer
                           Service Company                         and
                           4550 Montgomery Avenue                 Director
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Distributors, Inc.             Director
                           Broker-Dealer                           and
                           4550 Montgomery Avenue                 Officer
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert-Sloan Advisers, LLC            Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------


David R. Rochat            First Variable Rate Fund               Officer
                            for Government Income                  and
                           Calvert Tax-Free Reserves              Trustee
                           Calvert Cash Reserves
                           The Calvert Fund

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Municipal Fund, Inc.           Officer
                           Investment Company                      and
                           4550 Montgomery Avenue                 Director
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Asset Management Co., Inc.     Officer
                           Investment Advisor                      and
                           4550 Montgomery Avenue                 Director
                           Bethesda, Maryland 20814
                           ---------------
                           Chelsea Securities, Inc.               Officer
                           Securities Firm                         and
                           Post Office Box 93                     Director
                           Chelsea, Vermont 05038
                           ---------------
                           Grady, Berwald & Co.                   Officer
                           Holding Company                         and
                           43A South Finley Avenue                Director
                           Basking Ridge, NJ 07920
                           ---------------


Reno J. Martini            Calvert Asset Management Co., Inc.     Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Group, Ltd.                    Officer
                           Holding Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           First Variable Rate Fund               Officer
                            for Government Income
                           Calvert Tax-Free Reserves
                           Calvert Cash Reserves
                           Calvert Social Investment Fund
                           The Calvert Fund
                           Calvert Variable Series, Inc.
                           Calvert Municipal Fund, Inc.
                           Calvert World Values Fund, Inc.

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert New World Fund, Inc.           Director
                           Investment Company                      and
                           4550 Montgomery Avenue                 Officer
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert-Sloan Advisers, LLC            Director
                           Investment Advisor                      and
                           4550 Montgomery Avenue                 Officer
                           Bethesda, Maryland 20814
                           ---------------


Charles T. Nason           Acacia Mutual Life Insurance           Officer
                           Acacia National Life Insurance         and Director

                           Insurance Companies
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Acacia Financial Corporation           Officer
                           Holding Company                         and
                           7315 Wisconsin Avenue                  Director
                           Bethesda, Maryland 20814
                           ---------------
                           Gardner Montgomery Company             Director
                           Tax Return Preparation Services
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Acacia Federal Savings Bank            Director
                           Savings Bank
                           7600-B Leesburg Pike
                           Falls Church, Virginia 22043
                           ---------------
                           Enterprise Resources, Inc.             Director
                           Business Support Services
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Acacia Insurance Management            Officer
                            Services Corporation                   and
                           Service Corporation                    Director
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Group, Ltd.                    Director
                           Holding Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Administrative Services Co.    Director
                           Service Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Asset Management Co., Inc.     Director
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Shareholder Services, Inc.     Director
                           Transfer Agent
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Social Investment Fund         Trustee
                           Investment Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           -----------------
                           The Advisors Group, Inc.               Director
                           Broker-Dealer and
                           Investment Advisor
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ---------------


Robert-John H.             Acacia National Life Insurance         Officer
 Sands                     Insurance Company                       and
                           7315 Wisconsin Avenue                  Director
                           Bethesda, Maryland 20814
                           ----------------
                           Acacia Mutual Life Insurance           Officer
                           Insurance Company
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Acacia Financial Corporation           Officer
                           Holding Company                         and
                           7315 Wisconsin Avenue                  Director
                           Bethesda, Maryland 20814
                           ----------------
                           Acacia Federal Savings Bank            Officer
                           Savings Bank
                           7600-B Leesburg Pike
                           Falls Church, Virginia 22043
                           ---------------
                           Enterprise Resources, Inc.             Director
                           Business Support Services
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Acacia Realty Corporation              Officer
                           Real Estate Investments
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Acacia Insurance Management            Officer
                            Services Corporation                   and
                           Service Corporation                    Director
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Gardner Montgomery Company             Officer
                           Tax Return                             and
                            Preparation Services                  Director
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           The Advisors Group, Inc.               Director
                           Broker-Dealer and
                           Investment Advisor
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Group, Ltd.                    Director
                           Holding Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Administrative Services Co.    Director
                           Service Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Asset Management, Co., Inc.    Director
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Shareholder Services, Inc.     Director
                           Transfer Agent
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------


William M. Tartikoff       Acacia National Life Insurance         Officer
                           Insurance Company
                           7315 Wisconsin Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           First Variable Rate Fund for           Officer
                            Government Income
                           Calvert Tax-Free Reserves
                           Calvert Cash Reserves
                           Calvert Social Investment Fund
                           The Calvert Fund
                           Calvert Variable Series, Inc.
                           Calvert Municipal Fund, Inc.
                           Calvert World Values Fund, Inc.
                           Calvert New World Fund, Inc.

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Group, Ltd.                    Officer
                           Holding Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Administrative                 Officer
                           Services Company
                           Service Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Asset Management Co. Inc.      Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Shareholder Services, Inc.     Officer
                           Transfer Agent
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Distributors, Inc.             Director
                           Broker-Dealer                           and
                           4550 Montgomery Avenue                 Officer
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert-Sloan Advisers, LLC            Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------


Susan Walker Bender        Calvert Group, Ltd.                    Officer
                           Holding Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Administrative Services Co.    Officer
                           Service Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Asset Management Co., Inc.     Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Shareholder Services, Inc.     Officer
                           Transfer Agent
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Distributors, Inc.             Officer
                           Broker-Dealer
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert-Sloan Advisers, LLC            Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           First Variable Rate Fund for           Officer
                            Government Income
                           Calvert Tax-Free Reserves
                           Calvert Cash Reserves
                           Calvert Social Investment Fund
                           The Calvert Fund
                           Calvert Variable Series, Inc.
                           Calvert Municipal Fund, Inc.
                           Calvert World Values Fund, Inc.
                           Calvert New World Fund, Inc.

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------


Katherine Stoner           Calvert Group, Ltd.                    Officer
                           Holding Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Administrative Services Co.    Officer
                           Service Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Asset Management Co., Inc.     Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Shareholder Services, Inc.     Officer
                           Transfer Agent
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Distributors, Inc.             Officer
                           Broker-Dealer
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert-Sloan Advisers, LLC            Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           First Variable Rate Fund for           Officer
                            Government Income
                           Calvert Tax-Free Reserves
                           Calvert Cash Reserves
                           Calvert Social Investment Fund
                           The Calvert Fund
                           Calvert Variable Series, Inc.
                           Calvert Municipal Fund, Inc.
                           Calvert World Values Fund, Inc.
                           Calvert New World Fund, Inc.

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------


Lisa Crossley Newton       Calvert Group, Ltd.                    Officer
                           Holding Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Administrative Services Co.    Officer
                           Service Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Asset Management Co., Inc.     Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Shareholder Services, Inc.     Officer
                           Transfer Agent
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Distributors, Inc.             Officer
                           Broker-Dealer
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert-Sloan Advisers, LLC            Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           First Variable Rate Fund for           Officer
                            Government Income
                           Calvert Tax-Free Reserves
                           Calvert Cash Reserves
                           Calvert Social Investment Fund
                           The Calvert Fund
                           Calvert Variable Series, Inc.
                           Calvert Municipal Fund, Inc.
                           Calvert World Values Fund, Inc.
                           Calvert New World Fund, Inc.

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------


Ivy Wafford Duke           Calvert Group, Ltd.                    Officer
                           Holding Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Administrative Services Co.    Officer
                           Service Company
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------
                           Calvert Asset Management Co., Inc.     Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Shareholder Services, Inc.     Officer
                           Transfer Agent
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert Distributors, Inc.             Officer
                           Broker-Dealer
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           Calvert-Sloan Advisers, LLC            Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ----------------
                           First Variable Rate Fund for           Officer
                            Government Income
                           Calvert Tax-Free Reserves
                           Calvert Cash Reserves
                           Calvert Social Investment Fund
                           The Calvert Fund
                           Calvert Variable Series, Inc.
                           Calvert Municipal Fund, Inc.
                           Calvert World Values Fund, Inc.
                           Calvert New World Fund, Inc.

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ---------------


Daniel K. Hayes            Calvert Asset Management Co., Inc.     Officer
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ------------------
                           First Variable Rate Fund for           Officer
                            Government Income
                           Calvert Tax-Free Reserves
                           Calvert Cash Reserves
                           Calvert Social Investment Fund
                           The Calvert Fund
                           Calvert Variable Series, Inc.
                           Calvert Municipal Fund, Inc.
                           Calvert World Values Fund, Inc.

                           Investment Companies
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ------------------


Steve Van Order            Calvert Asset Management               Officer
                           Company, Inc.
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ------------------


Annette Krakovitz          Calvert Asset Management               Officer
                           Company, Inc.
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ------------------


John Nichols               Calvert Asset Management               Officer
                           Company, Inc.
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ------------------


David Leach                Calvert Asset Management               Officer
                           Company, Inc.
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ------------------


Matthew D. Gelfand         Calvert Asset Management               Officer
                           Company, Inc.
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, Maryland 20814
                           ------------------
                           Strategic Investment Management        Officer
                           Investment Advisor
                           1001 19th Street North
                           Arlington, Virginia 20009
                           ------------------


Item 29. Principal Underwriters

         (a)      Registrant's principal underwriter also underwrites
shares of First Variable Rate Fund for Government Income, Calvert
Tax-Free Reserves, Calvert Social Investment Fund, Calvert Cash Reserves,
Calvert Municipal Fund, Inc., Calvert World Values Fund, Inc.,
Calvert New World Fund, Inc., and Calvert Variable Series, Inc..

         (b)      Positions of Underwriter's Officers and Directors

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

Barbara J. Krumsiek        Director and President         President and Trustee

Ronald M. Wolfsheimer      Director, Senior Vice          Treasurer
                           President and Chief Financial Officer

William M. Tartikoff       Director, Senior Vice          Vice President and
                           President and Secretary        Secretary

Craig Cloyed               Senior Vice President          None

Karen Becker               Vice President, Operations     None

Steve Cohen                Vice President                 None

Geoffrey Ashton            Regional Vice President        None

Martin Brown               Regional Vice President        None

Janet Haley                Regional Vice President        None

Ben Ogbogu                 Regional Vice President        None

Susan Walker Bender        Assistant Secretary            Assistant Secretary

Katherine Stoner           Assistant Secretary            Assistant Secretary

Lisa Crossley Newton       Assistant Secretary            Assistant Secretary
                           and Compliance Officer

Ivy Wafford Duke           Assistant Secretary            Assistant Secretary

         (c)      Inapplicable.


Item 30. Location of Accounts and Records

         Ronald M. Wolfsheimer, Treasurer
         and
         William M. Tartikoff, Assistant Secretary
 
         4550 Montgomery Avenue, Suite 1000N
         Bethesda, Maryland 20814


Item 31. Management Services

         Not Applicable


Item 32. Undertakings

         a)       Not Applicable

         b)       Not Applicable

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


         SIGNATURES


Pursuant to the requirements of the Securities Act of 1933 and
the Investment Company Act of 1940, the Registrant certifies that it
meets all of the requirements for effectiveness of this registration
statement pursuant to Rule 485(b) under the Securities Act of 1933 and
has duly caused this registration statement to be signed on its behalf
by the undersigned, thereto duly authorized in the City of Bethesda, and
State of Maryland, on the 22nd day of May, 1998.


THE CALVERT FUND

         By:
         ________________**_________________
         Barbara J. Krumsiek
         President and Trustee


         SIGNATURES


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


Signature                           Title                     Date


__________**____________            President and             5/21/98
Barbara J. Krumsiek                 Trustee (Principal Executive Officer)


__________**____________            Principal Accounting      5/21/98
Ronald M. Wolfsheimer               Officer


__________**____________            Trustee                   5/21/98
Richard L. Baird, Jr.


__________**____________            Trustee                   5/21/98
Frank H. Blatz, Jr., Esq.


__________**____________            Trustee                   5/21/98
Frederick T. Borts, M.D.


__________**____________            Trustee                   5/21/98
Charles E. Diehl


__________**____________            Trustee                   5/21/98
Douglas E. Feldman


__________**____________            Trustee                   5/21/98
Peter W. Gavian


__________**____________            Trustee                   5/21/98
John G. Guffey, Jr.


__________**____________            Trustee                   5/21/98
M. Charito Kruvant


__________**____________            Trustee                   5/21/98
Arthur J. Pugh


__________**____________            Trustee                   5/21/98
David R. Rochat


__________**____________            Trustee                   5/21/98
D. Wayne Silby

**By Susan Walker Bender as Attorney-in-fact, pursuant to Power of Attorney
Forms on file.

<PAGE>

EXHIBIT INDEX

Form N-1A
Item No.

Ex-23
24(b)(10)     Form of Opinion and Consent of Counsel

Ex-23
24(b)(11)     Independent Auditors' Consent

Ex-24         Power of Attorney

Ex-27
24(17)        Financial Data Schedules







Exhibit 10


May 21, 1998


Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, N.W.
Washington, D.C.  20549

         Re:      Exhibit 10, Form N-1A
                  The Calvert Fund
                  File numbers 2-76510 and 811-3416

Ladies and Gentlemen:

         As Assistant Counsel to The Calvert Fund (the "Trust"), it is
my opinion, based upon an examination of the Trust's Declaration of
Trust and By-Laws and such other original or photostatic copies of Trust
records, certificates of public officials, documents, papers, statutes,
and authorities as I deemed necessary to form the basis of this opinion,
that the securities being registered by this Post-Effective Amendment
No. 37 of the Trust will, when sold, be legally issued, fully paid and
non-assessable.

         Consent is hereby given to file this opinion of counsel with
the Securities and Exchange Commission as an Exhibit to the Trust's
Post-Effective Amendment No. 37 to its Registration Statement.


Sincerely,



Susan Walker Bender
Assistant Counsel





                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.


May 7, 1997
Date                                        /Signature/

Edwidge Saint-Felix                         Barbara Krumsiek
Witness                                     Name of Trustee/Director


<PAGE>

                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

May 7, 1997
Date                                        /Signature/

Edwidge Saint-Felix                         Richard L.  Baird, Jr.
Witness                                     Name of Trustee/Director


<PAGE>

                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

May 7, 1997
Date                                        /Signature/

Charles E. Diehl                            Frank H. Blatz, Jr.
Witness                                     Name of Trustee/Director


<PAGE>

                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

May 7, 1997
Date                                        /Signature/

Edwidge Saint-Felix                         Douglas E. Feldman
Witness                                     Name of Trustee/Director


<PAGE>
                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

May 7, 1997
Date                                        /Signature/

Frank H. Blatz, Jr.                         Charles E. Diehl
Witness                                     Name of Trustee/Director

<PAGE>

                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

May 7, 1997
Date                                        /Signature/

Edwidge Saint-Felix                         Peter W. Gavian
Witness                                     Name of Trustee/Director

<PAGE>

                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

May 7, 1997
Date                                        /Signature/

M. Charito Kruvant                          John G. Guffey, Jr.
Witness                                     Name of Trustee/Director

<PAGE>

                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

May 7, 1997
Date                                        /Signature/

Edwidge Saint-Felix                         M. Charito Kruvant
Witness                                     Name of Trustee/Director

<PAGE>

                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

May 7, 1997
Date                                        /Signature/

Charles E. Diehl                            Arthur J. Pugh
Witness                                     Name of Trustee/Director

<PAGE>

                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.


May 7, 1997
Date                                        /Signature/

Katherine Stoner                            David R. Rochat
Witness                                     Name of Trustee/Director

<PAGE>


                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

May 7, 1997
Date                                        /Signature/

Edwidge Saint-Felix                         D. Wayne Silby
Witness                                     Name of Trustee/Director

<PAGE>

                               POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the "Funds"),
hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Katherine Stoner, Lisa Crossley, and Ivy Wafford Duke my true and
lawful attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all such things
in my name and behalf necessary for registering and maintaining registration
or exemptions from registration of the Funds with any government agency in any
jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

January 16, 1998
Date                                        /Signature/

Roger Wilkins                               Frederick Borts, MD
Witness                                     Name of Trustee/Director

<PAGE>

                               POWER OF ATTORNEY


         I, the undersigned officer of Calvert Social Investment Fund, Calvert
World Values Fund, Acacia Capital Corporation, Calvert New World Fund, First
Variable Rate Fund, Calvert Tax-Free Reserves, Calvert Cash Reserves, The
Calvert Fund and Calvert Municipal Fund (each, respectively, the "Fund"),
hereby constitute William M. Tartikoff, Susan Walker Bender, Katherine Stoner,
Lisa Crossley, and Ivy Wafford Duke my true and lawful attorneys, with full
power to each of them, to sign for me and in my name in the appropriate
capacities, all registration statements and amendments filed by the Fund with
any federal or state agency, and to do all such things in my name and behalf
necessary for registering and maintaining registration or exemptions from
registration of the Fund with any government agency in any jurisdiction,
domestic or foreign.

         The same persons are authorized generally to do all such things in my
name and behalf to comply with the provisions of all federal, state and
foreign laws, regulations, and policy pronouncements affecting the Funds,
including, but not limited to, the Securities Act of 1933, the Securities
Exchange Act of 1934, the Investment Company Act of 1940, the Investment
Advisers Act of 1940, and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to any
document needed to maintain the lawful operation of the Funds in connection
with any transaction approved by the Board of Trustee/Directors.

         When any of the above-referenced attorneys signs my name to any
document in connection with maintaining the lawful operation of the Funds, the
signing is automatically ratified and confirmed by me by virtue of this Power
of Attorney.

         WITNESS my hand on the date set forth below.

December 16, 1997
Date                                        /Signature/

William M. Tartikoff                        Ronald M. Wolfsheimer
Witness                                     Name of Officer


<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000701039
<NAME> CALVERT FUND
<SERIES>
   <NUMBER> 215
   <NAME> CALVERT INCOME FUND
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             APR-01-1997
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                            38702
<INVESTMENTS-AT-VALUE>                           38650
<RECEIVABLES>                                      460
<ASSETS-OTHER>                                     303
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                   39413
<PAYABLE-FOR-SECURITIES>                            44
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           67
<TOTAL-LIABILITIES>                                111
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                         38334
<SHARES-COMMON-STOCK>                             2285
<SHARES-COMMON-PRIOR>                             2783
<ACCUMULATED-NII-CURRENT>                         (14)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                           1034
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                          (52)
<NET-ASSETS>                                     39302
<DIVIDEND-INCOME>                                   75
<INTEREST-INCOME>                                 2957
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                     521
<NET-INVESTMENT-INCOME>                           2511
<REALIZED-GAINS-CURRENT>                          1531
<APPREC-INCREASE-CURRENT>                          306
<NET-CHANGE-FROM-OPS>                             4348
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                       (2525)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                           3823
<NUMBER-OF-SHARES-REDEEMED>                    (14224)
<SHARES-REINVESTED>                               2070
<NET-CHANGE-IN-ASSETS>                          (6508)
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                        (497)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              290
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    550
<AVERAGE-NET-ASSETS>                             41393
<PER-SHARE-NAV-BEGIN>                            16.47
<PER-SHARE-NII>                                  1.020
<PER-SHARE-GAIN-APPREC>                          0.740
<PER-SHARE-DIVIDEND>                           (1.030)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              17.20
<EXPENSE-RATIO>                                   1.26
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

CONSENT OF INDEPENDENT ACCOUNTANTS

To the Board of Trustees of The Calvert Fund

     We consent to the  incorporation by reference in  Post-Effective  Amendment
No. 37 to the  Registration  Statement  of The  Calvert  Fund on Form N-1A (File
Numbers  2-76510 and 811-3416) of our report dated November 7, 1997 on our audit
of the financial  statements  and financial  highlights of Calvert  Income Fund,
which report is included in the Annual Report to Shareholders for the year ended
September  30, 1997,  which is  incorporated  by  reference in the  Registration
Statement.  We also  consent  to the  reference  to our firm  under the  caption
"Independent   Accountants  and  Custodians"  in  the  Statement  of  Additional
Information.


COOPERS & LYBRAND L.L.P.
Baltimore, Maryland
May 21, 1998




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