FIRST VARIABLE RATE FD OF CALVERT FIRST GOVT MONEY MKT FUND
485BPOS, 1996-04-30
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                                                             Page 1 of ___

                                                     SEC Registration Nos.
                                                      2-56809 and 811-2633

                    SECURITIES AND EXCHANGE COMMISSION
                          Washington, D.C. 20549

                                FORM N-1A

REGISTRATION STATEMENT UNDER THE
SECURITIES ACT OF 1933

   
         Post-Effective Amendment No. 33             XX
    

                                  and/or

REGISTRATION STATEMENT UNDER THE
INVESTMENT COMPANY ACT OF 1940

   
         Amendment No. 33                            XX
    

                            First Variable Rate Fund
                   Calvert First Government Money Market 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 April 30, 1996
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.

Pursuant to the provisions of Rule 24f-2 under the Investment Company
Act of 1940, an indefinite number of shares of beneficial interest is
being registered by this Registration Statement.  On February 28, 1996,
Registrant filed a Rule 24f-2 Notice for its fiscal year ended December
31, 1995.


<PAGE>

   
PROSPECTUS --
April 30, 1996
                        FIRST VARIABLE RATE FUND:
                CALVERT FIRST GOVERNMENT MONEY MARKET FUND
             4550 Montgomery Avenue, Bethesda, Maryland 20814
==========================================================================
    

INTRODUCTION TO THE FUND

CALVERT  FIRST  GOVERNMENT  MONEY  MARKET  FUND  (the  "Fund")  is a  U.S.
Government-only   money  market  fund  that  seeks  to  earn  the  highest
possible yield  consistent  with safety,  liquidity,  and  preservation of
capital.  In  pursuing  its  objective,  the  Fund  invests  only  in U.S.
Government-backed  obligations,  including  such  obligations  subject  to
repurchase  agreements with recognized  securities  dealers and banks. The
Fund seeks to maintain a constant  net asset value of $1.00 per share.  An
investment  in the Fund is  neither  insured  nor  guaranteed  by the U.S.
Government.  There can be no  assurance  that the Fund will be  successful
in meeting its  investment  objective or  maintaining a constant net asset
value of $1.00 per share.

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  (dated  April 30,
1996) has been filed with the  Securities  and Exchange  Commission and is
incorporated  by reference.  This free Statement is available upon request
from the Fund: 800-368-2748.
    

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.



FUND EXPENSES

A.   Shareholder Transaction Costs
==========================================================================
     Sales Load on Purchases                                  None
     Sales Load on Reinvested Dividends                       None
     Deferred Sales Load                                      None
     Redemption Fees                                          None
     Exchange Fees                                            None
 
<TABLE>
<CAPTION>

B.   Annual Fund Operating Expenses - Fiscal Year 1995
<S>                                               <C>
     
     (as a percentage of average net assets)
     Management Fees                                          0.50%
     Rule 12b-1 Service and Distribution Fees                 None
     Other Expenses                                           0.39%
     Total Fund Operating Expenses<F1>                        0.89%

<FN>
<F1>  Net Fund Operating Expenses after reduction for fees paid indirectly
were 0.88%.
</FN>
</TABLE>



C.       Example:     You would pay the following expenses on a $1,000
                      investment, assuming (1) 5% annual return and (2)
                      redemption at the end of each period:

      1 Year            3 Years          5 Years           10 Years
==========================================================================

      $9                $28              $49                $110

   
The  example,   which  is   hypothetical,   should  not  be  considered  a
representation  of past or future expenses.  Actual expenses 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).

A.  Shareholder  Transaction  Costs  are  charges  you pay when you buy or
sell  shares of the Fund.  If you request a wire  redemption  of less than
$1,000, you will be charged a $5 wire fee.

B.  Annual  Fund  Operating  Expenses  are based on the Fund's  historical
expenses.   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  yield or share  price and are not
charged  directly to  individual  shareholder  accounts.  Please  refer to
"Management of the Fund" for further information.



FINANCIAL HIGHLIGHTS

The following table provides  information  about the financial  history of
the Fund's  shares.  It  expresses  the  information  in terms of a single
share  outstanding  throughout  each year.  The table has been  audited by
those  independent  accountants  whose  report is  included  in the Annual
Report  to  Shareholders  of the  Fund.  The  tables  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 Statement of Additional Information.

<TABLE>
<CAPTION>



   
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>
    

Net asset value, beginning of year               $1.000             $1.000
Income from investment operations
     Net investment income                       .051                 .036
Distributions from
     Net investment income                       (.051)              (.036)
Net asset value, end of year                     $1.000             $1.000
Total return<F2>                                 5.22%              3.66%

Ratio to average net assets
     Net investment income                       5.04%               3.56%
     Total expenses<F3>                           .89%                --
     Net expenses                                 .88%                .81%
 
Net assets, end of year (in thousands)           $241,150
$230,183

Number of shares outstanding at end
of year (in thousands)                           241,685
230,618

<FN>
<F2> Total return has not been audited prior to 1994.
<F3> Effective December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the
ratio of net expenses.

</FN>
</TABLE>

<PAGE>



<TABLE>
<CAPTION>

   
Year Ended December 31,                          1993                1992
<S>                                              <C>                 <C>
    

Net asset value, beginning of year               $1.000              $1.000
Income from investment operations
     Net investment income                       .027                .033
Distributions from
     Net investment income                       (.027)             (.033)
Net asset value, end of year                     $1.000             $1.000

Total return<F4>                                  2.70%               3.40%

Ratio to average net assets
     Net investment income                       2.66%               3.30%
     Total expenses<F5>                            --                  --
     Net expenses                                .81%                .82%

Net assets, end of year (in thousands)           $263,260        $314,999

Number of shares outstanding at end
of year (in thousands)                           263,930          315,667

<FN>
<F4> Total return has not been audited prior to 1994.

<F5>5 Effective December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the
ratio of net expenses.
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>


   
Year Ended December 31,                          1991                1990
<S>                                             <C>                  <C>
    

Net asset value, beginning of year               $1.000              $1.000
Income from investment operations
     Net investment income                       .055                .073
Distributions from
     Net investment income                       (.055)             (.073)
Net asset value, end of year                     $1.000             $1.000
Total return<F6>                                  5.65%              7.61%
Ratio to average net assets
     Net investment income                       5.49%               7.36%
     Total expenses<F7>                            --                  --
     Net expenses                                .82%                .83%

Net assets, end of year (in thousands)           $353,339        $342,206

Number of shares outstanding at end
of year (in thousands)                           353,851          342,527
<FN>
<F6> Total return has not been audited prior to 1994.
<F7> Effective December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the
ratio of net expenses.
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>


   
Year Ended December 31,                          1989                1988
<S>                                              <C>                 <C>
    

Net asset value, beginning of year               $1.000              $1.000
Income from investment operations
     Net investment income                       .082                .067
Distributions from
     Net investment income                       (.082)             (.067)
Net asset value, end of year                     $1.000             $1.000
Total return<F8>                                  6.57%              6.91%
Ratio to average net assets
     Net investment income                       8.21%               6.65%
     Total expenses<F9>                            --                  --
     Net expenses                                .85%                .92%

Net assets, end of year (in thousands)           $359,274          $367,321

Number of shares outstanding at end
of year (in thousands)                           359,654            367,725

<FN>

<F8> Total return has not been audited prior to 1994.
<F9> Effective December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the
ratio of net expenses.
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>


   
Year Ended December 31,                          1987                1986
<S>                                              <C>                 <C>
    

Net asset value, beginning of year               $1.000              $1.000
Income from investment operations
     Net investment income                       .059                .062
Distributions from
     Net investment income                       (.059)             (.062)
Net asset value, end of year                     $1.000            $1.000

Total return<F10>                                 5.88%             6.26%

Ratio to average net assets
     Net investment income                       5.70%              6.08%
     Total expenses<F11>                           --                  --
     Net expenses                                 .89%               .88%

Net assets, end of year (in thousands)           $393,272        $471,944

Number of shares outstanding at end
of year (in thousands)                           393,590         472,204
<FN>
<F10> Total return has not been audited prior to 1994.
<F11> Effective December 31, 1995, this ratio reflects total expenses
before reduction for fees paid indirectly; such reductions are included
in the ratio of net expenses.
</FN>
</TABLE>



INVESTMENT OBJECTIVE AND POLICIES

The  Fund  seeks  to earn  the  highest  possible  yield  consistent  with
safety,   liquidity,   and  preservation  of  capital.   In  pursuing  its
objective,   the  Fund  invests  solely  in  debt  obligations  issued  or
guaranteed  by the  United  States,  its  agencies  or  instrumentalities,
assignments of interest in such  obligations,  and commitments to purchase
such  obligations  ("U.S.  Government-backed  obligations").  The Fund may
invest  in  U.S.  Government-backed   obligations  subject  to  repurchase
agreements with the recognized securities dealers and banks.

U.S. Government Obligations

Obligations  issued by the U.S.  Treasury,  such as U.S.  Treasury  bills,
notes and bonds,  are  supported  by the full faith and credit of the U.S.
Government.

Securities  issued by the U.S.  Government  include a variety of  Treasury
securities  which differ only in their  interest  rates,  maturities,  and
time of  issuance.  In addition,  numerous  agencies  (such as  Government
National  Mortgage  Association,  Farmers  Home  Administration,   Federal
Housing   Administration,   and   Small   Business   Administration)   and
instrumentalities   (such  as  Federal  Home  Loan  Mortgage  Corporation,
Federal   National   Mortgage   Association,    Student   Loan   Marketing
Association  and Federal Home Loan Bank) issue or  guarantee  obligations.
Some of these  securities  are  supported  by the full faith and credit of
the U.S.  Treasury;  others  are  supported  by the right of the issuer to
borrow from the Treasury;  still others are  supported  only by the credit
of the instrumentality.

Repurchase Agreements

The  Fund  may  enter  into   repurchase   agreements.   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.

Bank CDs

The Fund may also  invest  in  certificates  of  deposit  and  other  debt
obligations  of  commercial  banks,  savings  banks,  and savings and loan
associations  having  assets of less than $1  billion,  provided  that the
principal  amount of such  certificate  is insured in full by the  Federal
Deposit  Insurance  Corporation  ("FDIC").   The  FDIC  presently  insures
accounts up to $100,000;  interest  earned  above  $100,000 is not insured
by the FDIC.

Variable Rate Obligations

The Fund may invest in variable and floating  rate  obligations.  Variable
rate  obligations have a yield which is adjusted  periodically  based upon
changes  in  the  level  of  prevailing  interest  rates.   Floating  rate
obligations  have an interest rate fixed to a known lending rate,  such as
the prime rate,  and are  automatically  adjusted  when that rate changes.
Variable and floating  rate  obligations  lessen the capital  fluctuations
usually  inherent in fixed  income  investments,  to diminish  the risk of
capital  depreciation of investments and shares;  but this also means that
should  interest rates  decline,  the yield of each class of the Fund will
decline  and the Fund  would not have as many  opportunities  for  capital
appreciation of Fund investments.

Other Policies

Investments  in  Government-backed   securities  are  subject  to  certain
market  risks,  and there is, of course,  no assurance  that the Fund will
be successful in meeting its investment objective.

The Fund may  temporarily  borrow  money from banks (and pledge its assets
to secure such  borrowing) to meet  redemption  requests.  Such  borrowing
may not exceed 25% of the value of the Fund's total  assets.  The Fund has
adopted certain  fundamental  investment  restrictions which are discussed
in  detail   in  the   Statement   of   Additional   Information.   Unless
specifically  noted  otherwise,  the  investment  objective,  policies and
restrictions  of the Fund are  fundamental  and may not be changed without
shareholder approval.

YIELD

Yield refers to income generated by an investment over a period of time.

The Fund may advertise  "yield" and  "effective  yield." Yield figures are
based on  historical  earnings  and are not  intended to  indicate  future
performance.  The  "yield"  of  the  Fund  refers  to  the  actual  income
generated  by an  investment  in the Fund over a  particular  base period,
stated  in the  advertisement.  If the base  period is less than one year,
the yield will be  "annualized."  That is, the amount of income  generated
by the  investment  during the base period is assumed to be generated over
a one-year  period and is shown as a  percentage  of the  investment.  The
"effective  yield" is calculated like yield,  but assumes  reinvestment of
earned  income and  accordingly  produces a higher  figure.  The effective
yield will be slightly  higher than the yield  because of the  compounding
effect of this assumed reinvestment.

MANAGEMENT OF THE FUND

The Board of Trustees supervises the activities and reviews its
contracts with companies that provide the Fund with services.

Calvert First  Government  Money Market Fund is a series of First Variable
Rate  Fund for  Government  Income,  an  open-end  diversified  management
investment  company,  organized as a Massachusetts  business trust.  Since
September  1, 1991,  the series has been doing  business as Calvert  First
Government Money Market Fund.

The  Fund  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 you own.

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,  transfer
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, 1995,  Calvert Group
managed and  administered  assets in excess of $4.8  billion and more than
200,000 shareholder and depositor accounts.

Calvert Asset Management 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  fiscal year 1995,  the  Advisor  was  entitled,
pursuant  to  the  Investment  Advisory  Agreement  to  receive,  and  did
receive  0.50% of the  Fund's  average  daily  net  assets  as  investment
advisory fees.

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 preparing  advertising and sales literature,  and printing and mailing
prospectuses   to  prospective   investors.   CDI  does  not  receive  any
compensation  from  the  Fund's  Class A  Shares,  although  from  its own
resources  the  Distributor  may pay  broker-dealer  firms  at rates up to
0.20%  of the  average  daily  net  assets  maintained  in  Fund  accounts
administered by the respective firms.

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.

   
The transfer agent keeps your account records.
    

Calvert  Shareholder  Services,  Inc.  is the  Fund's  transfer,  dividend
disbursing and shareholder servicing agent.

SHAREHOLDER GUIDE

Opening An Account

You can buy shares of the Fund in several ways which are described here
and in the chart on page __.

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.

NET ASSET VALUE

   
The Fund's shares are sold without a sales charge.
    

Net asset  value,  or "NAV",  refers  to the  worth of one  share.  NAV is
computed by adding the value of a Fund's  investments  plus cash and other
assets,  deducting  liabilities and then dividing the result by the number
of shares  outstanding.  The NAV 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.  The
Fund  securities  are valued  according to the  "amortized  cost"  method,
which is intended to stabilize the NAV at $1.00 per share.

All  purchases  of Fund  shares  will be  confirmed  and  credited to your
account in full and fractional  shares  (rounded to the nearest 1/100 of a
share).  The  Fund  may  send  monthly  statements  in lieu  of  immediate
confirmations of purchases and redemptions.



   
                            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           payable to the Fund         
                                                                              
                    and mail it with your         and mail it with your       
                                                                              
                    investment slip to:           application to:             
                                                                              
                                                                              
                    Calvert Group                 Calvert Group               
                                                                              
                    P.O. Box 419739               P.O. Box 419544             
                                                                              
                    Kansas City, MO               Kansas City, MO             
                                                                             
                    64141-6739                    64141-6544                  
                                                  
By Registered, Certified, or Overnight Mail:
                                    
                    Calvert Group                 Calvert Group         
                                                                        
                    c/o NFDS, 6th Floor           c/o NFDS, 6th Floor   
                                                                        
                    1004 Baltimore                1004 Baltimore        
                                                                        
                    Kansas City, MO               Kansas City, MO       
                                                                        
                    64105-1807                    64105-1807            
                                                                        
Through Your Broker $2,000 minimum               $250 minimum           
                                                                        
At the Calvert      Visit the Calvert Branch Office to
                    make investments by check.
Branch Office       See back cover page for the address.

FOR ALL OPTIONS BELOW, PLEASE CALL YOUR BROKER, 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 for            $50 minimum
Controller*          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.

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 U.S.  dollars  and checks  must be
drawn on U.S.  banks.  No cash will be  accepted.  The Fund  reserves  the
right to  suspend  the  offering  of  shares  for a  period  of time or to
reject any specific  purchase  order.  If your check does not clear,  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,  redemptions against those funds
(including  drafts) will not be honored.  To avoid this collection period,
you can wire federal funds from your bank, which may charge you a fee.

Your  purchase will be processed at the net asset value  calculated  after
your order is received and accepted.  The  Portfolio  attempts to maintain
a  constant  net  asset  value of $1.00 per  share.  Except in the case of
telephone  orders,  investors  whose payments are received in or converted
into  federal  funds by 12:30  p.m.  Eastern  time by the  custodian  will
receive  the  dividend  declared  that  day.  If  your  wire  purchase  is
received  after 12:30 p.m.  Eastern time,  your account will begin earning
dividends on the next  business  day. A telephone  order placed to Calvert
Institutional  Marketing  Services by 12:30 p.m.  Eastern time will become
effective at the price  determined  at 5 p.m.  Eastern time and the shares
purchased  will receive the  dividend  declared on Fund shares that day if
federal  funds are  received  by the  custodian  by 5 p.m.  Eastern  time.
Exchanges  begin  earning  dividends  the  next  business  day  after  the
exchange  request is received by mail or by telephone.  If the purchase is
by check and is received by 4 p.m.  Eastern  time,  it will begin  earning
dividends the next business day.  Check  purchases  received at the branch
location  will be  credited  the next  business  day.  Any check  purchase
received without an investment slip may cause delayed crediting.

EXCHANGES

You may exchange shares of the Fund for shares of other Calvert Group
Funds.

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.  Before you make an exchange from a Fund or Portfolio,  please
note the following:

      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.

      Each exchange represents the sale of shares of one Fund and the
     purchase of shares of another.

      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.

      Shares  on which  you have  already  paid a sales  charge  or shares
     acquired by  reinvestment  of dividends or  distributions  at Calvert
     Group may be exchanged into another Fund at no additional charge.

   
For  purposes of the exchange  privilege,  effective  July 31,  1996,  the
Portfolio  is related  to Summit  Cash  Reserves  Fund by  investment  and
investor  services.  The Fund  reserves  the right to  terminate or modify
the exchange privilege with 60 days' written notice.
    

OTHER CALVERT GROUP SERVICES

Calvert Information Network

Calvert Group has a  round-the-clock  telephone service that lets existing
customers  use  a  push  button  phone  to  obtain   prices,   performance
information, account balances, and 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 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.  If you would
like  to  make   arrangements   for   systematic   monthly  or   quarterly
redemptions  from your Calvert Group account,  call your broker or Calvert
for a Money Controller Application.

Telephone Transactions

Calvert may record all telephone calls.

You may purchase,  redeem, or exchange shares,  wire funds and use Calvert
Money  Controller  by  telephone  if  you  have   pre-authorized   service
instructions.  You  automatically  have  telephone  privileges  unless you
elect  otherwise.  The Fund, the transfer  agent and their  affiliates are
not liable for acting in good  faith on  telephone  instructions  relating
to  your  account,  so  long  as  they  follow  reasonable  procedures  to
determine that the telephone  instructions  are genuine.  Such  procedures
may include  recording  the  telephone  calls and  requiring  some form of
personal  identification.  You should  verify the  accuracy  of  telephone
transactions immediately upon receipt of your confirmation statement.

Optional Services

Complete the 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 your  broker or  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 and saves paper and trees for the
environment.
    

If you have  multiple  accounts  with  Calvert,  you may receive  combined
mailings of some shareholder  information,  such as 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 chart on page _____.

      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.

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

      Simplified   Employee   Pension   Plan   (SEP-IRA):   available   to
     self-employed people and their partners,  or to corporations.  Salary
     reduction   pension  plans  (SAR-SEP  IRAs)  are  also  available  to
     employers with 25 or fewer employees.

      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 net asset  value  calculated  after
your redemption  request is received and accepted.  See 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.

If you sell  shares by  telephone  or written  request,  you will  receive
dividends  through the date the request is received and processed.  If you
write a draft to sell  shares,  the shares will earn  dividends  until the
draft is presented to the Fund to be paid.

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,  it may be  closed  and the  proceeds  mailed to you at the
address of record.  You will have 30 days'  notice that your  account will
be closed  unless  you make an  additional  investment  to  increase  your
account balance to the $1,000 minimum.

HOW TO SELL YOUR SHARES

Draftwriting

   
You may  redeem  shares in your  account  by  writing a draft for at least
$250. If you complete and return a signature  card for  Draftwriting,  the
Fund will mail bank  drafts to you,  printed  with your name and  address.
Generally,  there is no charge to you for the  maintenance of this service
or the  clearance of drafts,  but the Fund  reserves the right to charge a
service fee for drafts  returned for  uncollected or  insufficient  funds.
The  Portfolio  will  charge $25 for any stop  payments  on  drafts.  As a
service to shareholders,  the Fund may  automatically  transfer the dollar
amount  necessary  to cover  drafts  you have  written on the Fund to your
Fund account  from any other of your  identically  registered  accounts in
Calvert money market funds or Calvert  Insured  Plus.  The Fund may charge
a fee for this service.
    

By Mail To:

Calvert Group
P.O. Box 419544
Kansas City, MO
64179-6544

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.  If you do
not have a voided  check or if you would like  funds  sent to a  different
address or another person, your letter must be signature guaranteed.

Type of                             Requirements
Registration

Corporations, Associations          Letter of instruction  and a corporate
                                    resolution, signed by person(s)
                                    authorized  to  act  on  the  account,
                                    accompanied by 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 an address or bank you have  previously  authorized.  A charge of $5 is
imposed  on  wire   transfers   of  less  than  $1,000.   See   "Telephone
Transactions" on page ___.

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.

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)  redemption  checks for a fixed  amount  sent to you on
the 15th of each month,  simply by sending a letter with all  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.

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 AND TAXES

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

Dividends  from the Fund's net  investment  income are declared  daily and
paid monthly.  Net  investment  income  consists of interest  income,  net
short-term  capital  gains,  if any,  and  dividends  declared and paid on
investments,  less expenses.  Dividend and distribution payments will vary
between  classes;  dividend  payments will generally be higher for Class A
shares.

Dividend payment options

Dividends  and  any   distributions   are   automatically   reinvested  in
additional  shares of the Fund,  unless you elect to have the dividends of
$10 or more  paid in cash  (by  check  or by  Calvert  Money  Controller).
Dividends and  distributions  from the Fund may also be invested in shares
of any other  Calvert Group Fund or  Portfolio,  at no additional  charge.
You must notify the Fund in writing to change  your  payment  options.  If
you elect to have  dividends  and/or  distributions  paid in cash, and the
U.S.  Postal Service cannot deliver the check,  or if it remains  uncashed
for six months,  it, as well as future dividends and  distributions,  will
be reinvested in additional shares.

Federal Taxes

In January,  the Fund will mail you Form 1099-DIV  indicating  the federal
tax status of  dividends  and any capital gain  distributions  paid to you
by the  Fund  during  the  past  year.  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.

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  U.S.  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.  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.

       



   
TABLE OF            Fund Expenses                  Net Asset Value
CONTENTS            Financial Highlights           When Your Account Will Be
                    Investment Objectives          Credited 
                    and Policies                   Exchanges                   
                    Yield                          Other Calvert Group Services
                    Management of the Fund         Selling Your Shares
                    SHAREHOLDER GUIDE:             How to Sell Your Shares
                    How to Buy Shares              Dividends and Taxes




To Open an Account:                                     Prospectus
     800-368-2748                                       April 30, 1996
    

Performance and Prices:
Calvert Information Network                            CALVERT FIRST GOVERNMENT
24 hours, 7 days a week                                MONEY MARKET FUND
     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
Address: http://www.calvertgroup.com
    

PRINCIPAL UNDERWRITER
Calvert Distributors, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814

<PAGE>






                        First Variable Rate Fund:
                Calvert First Government Money Market Fund

   
                   Statement of Additional Information
                              April 30, 1996
    


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

INDEPENDENT ACCOUNTANTS                       PRINCIPAL UNDERWRITER
Coopers & Lybrand, L.L.P.                     Calvert Distributors, Inc.
217 Redwood Street                            4550 Montgomery Avenue
Baltimore, Maryland 21202-3316                Suite 1000N
                                              Bethesda, Maryland 20814



                           TABLE OF CONTENTS


                          Investment Objective and Strategy          1
                          Investment Restrictions                    1
                          Dividends and Distributions                2   
                          Tax Matters                                2
                          Net Asset Value                            3
                          Calculation of Yield                       3
                          Advertising                                3
                          Purchases and Redemption of Shares         4          
                          Trustees and Officers                      4
                          Investment Advisor                         6
                          Transfer and Shareholder Servicing Agent   7          
                          Portfolio Transactions                     7
                          Independent Accountants and Custodians     7          
                          General Information                        7
                          Financial Statements                       8




                                                
                                                  

   
STATEMENT OF ADDITIONAL INFORMATION-April 30, 1996
    

                        FIRST VARIABLE RATE FUND:
                CALVERT FIRST GOVERNMENT MONEY MARKET FUND
      4550 Montgomery Avenue, Suite 1000N, 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 First  Variable Rate Fund Calvert  First  Government
Money Market Fund (the  Fund)  Prospectus,  dated April 30, 1996,  which
may be  obtained  free of charge by  writing  or  calling  the Fund at the
telephone numbers listed above.
    

==========================================================================
                    INVESTMENT OBJECTIVE AND STRATEGY
==========================================================================

         In pursuing its objective of earning the highest  possible  yield
consistent with safety,  liquidity,  and preservation of capital, the Fund
invests  solely in debt  obligations  issued or  guaranteed  by the United
States,  its  agencies or  instrumentalities,  assignments  of interest in
such  obligations,  and  commitments to purchase such  obligations  ("U.S.
Government-backed   obligations").   The   Fund   may   invest   in   U.S.
Government-backed   obligations  subject  to  repurchase  agreements  with
recognized securities dealers and banks.
         The Fund  engages  in  repurchase  Agreements  in order to earn a
higher  rate of  return  than it could  earn  simply by  investing  in the
obligation  which is the subject of the repurchase  agreement.  Repurchase
agreements  are not,  however,  without risk. If the seller were to become
bankrupt,  the Fund  might  realize a loss if the value of the  underlying
security  did not  equal  or  exceed  the  repurchase  price.  In order to
minimize  the  risk  of  investing  in  repurchase  agreements,  the  Fund
engages in such transactions only with recognized  securities  dealers and
banks  and in all  instances  holds  underlying  securities  with a  value
equal to the total  repurchase  price  such  dealer or bank has  agreed to
pay.  Repurchase  agreements  are always for periods of less than one year
and no more than 10% of the Fund's  assets may be invested  in  repurchase
agreements not terminable within seven days.
         Although   all  the   securities   purchased   by  the  Fund  are
Government-backed  as to principal or secured by such securities,  some of
the  types  of  Government  securities  the  Fund  buys  may be  sold at a
premium  which is not backed by a Government  guarantee.  The premiums are
amortized  over the life of the security;  however,  if a security  should
default or be prepaid,  the Fund could  realize as a loss the  unamortized
portion of such premium.
         In the  Government-guaranteed  loan market, most purchases of new
issues are made under firm (forward) commitment  agreements.  Purchases of
long-term  fixed rate debt  securities  under such  agreements can involve
risk of loss due to changes in the market  rate of  interest  between  the
commitment date and the settlement  date.  Forward  commitment  agreements
for  variable  rate  securities,  unlike  such  agreements  for fixed rate
securities,  are stable in value;  the Fund's Advisor believes the risk of
loss  under  forward   commitment   agreements   involving  variable  rate
obligations to be insignificant.
         All the Fund's  investments  maturing  in more than one year will
have  a  variable   rate  feature   under  which  the  yield  is  adjusted
periodically  based  upon  changes  in money  market  rates such as prime.
Such  adjustments  will be  made at  least  semi-annually.  Variable  rate
securities   minimize  the  wide   fluctuations   in  capital  value  that
represent the  traditional  drawback to such  long-term  investments;  but
this also means that should  interest rates decline,  the amount of return
paid by the Fund will  decline  and the Fund will  forego the  opportunity
of capital appreciation on its portfolio securities.
         The foregoing  objective and policies may not be altered  without
the  prior  approval  of the  holders  of a  majority  of the  outstanding
shares of the Fund.  There is, of course,  no assurance that the Fund will
be successful in meeting the above investment objective.

==========================================================================
                         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. The Fund may not:
         (1) Purchase common stocks,  preferred stocks, warrants,
         other equity securities,  corporate bonds or debentures,
         state bonds,  municipal  bonds,  or  industrial  revenue
         bonds;
         (2)  Borrow  money,  except  from  banks as a  temporary
         measure for emergency  (not  leveraging)  purposes in an
         amount not  greater  than 25% of the value of the Fund's
         total  assets  (including  the amount  borrowed)  at the
         time the borrowing is made.  Investment  securities will
         not  be  purchased  while  borrowings  are  outstanding.
         Borrowings  will only be undertaken  to  facilitate  the
         meeting of redemption requests;
         (3) Pledge its assets,  except to secure  borrowing  for
         temporary  or  emergency  purposes  and then  only in an
         amount up to 25% of its total assets.  Although the Fund
         has the  right to  pledge  in excess of 10% of the value
         of  its  assets,  it  will  not  do  so as a  matter  of
         operating  policy in order to comply with certain  state
         investment restrictions;
         (4) Sell securities short;
         (5) Write or purchase put or call options;
         (6) Underwrite the securities of other issuers;
         (7)  Purchase  a  security  which is subject to legal or
         contractual  restrictions  on resale,  i.e.,  restricted
         securities;
         (8)  Purchase  or  sell  real  estate  investment  trust
         securities, commodities, or oil and gas interests;
         (9)  Make  loans  to  others,   except  for   repurchase
         transactions  (the  purchase  of a portion  of  publicly
         distributed   debt  securities  is  not  considered  the
         making of a loan);
         (10) Invest in companies  for the purpose of  exercising
         control;   or   invest  in  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.

==========================================================================
                       DIVIDENDS AND DISTRIBUTIONS
==========================================================================

         Dividends  from the Fund's  net  investment  income are  declared
daily and paid monthly.  Net  investment  income  consists of the interest
income  earned on  investments  (adjusted  for  amortization  of  original
issue  or  market  discount  or  premium),  less  expenses.  Realized  and
unrealized  gains and losses are not  included in net  investment  income.
Net  short-term   capital  gains  will  be  distributed  once  each  year,
although  the Fund may  distribute  them more  frequently  if necessary in
order  to  maintain  the  Fund's  net  asset  value at  $1.00  per  share.
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 loss
carryovers, if any, have been used or have expired.
         Purchasers  of Fund shares  begin  receiving  dividends  from the
date  federal  funds  are  received  by the Fund.  Purchases  by bank wire
received  by the  Fund's  custodian  prior to 12:30  p.m.,  Eastern  time,
represent  immediately  available  federal funds.  Shareholders  redeeming
shares by telephone,  electronic  funds  transfer or written  request will
receive  dividends  through  the  date  that  the  redemption  request  is
received;  shareholders  redeeming shares by draft will receive  dividends
up to the date such draft is presented to the Fund for payment.

==========================================================================
                               TAX MATTERS
==========================================================================

         In 1995 the  Fund did  qualify  and in 1996 the Fund  intends  to
qualify as a  "regulated  investment  company"  under  Subchapter M of the
Internal  Revenue Code, as amended.  By so  qualifying,  the Fund will not
be  subject  to  federal  income  taxes,  nor to the  federal  excise  tax
imposed by the Tax Reform Act of 1986,  to the extent that it  distributes
its net investment income and net capital gains.
         Dividends  of net  investment  income  and  distributions  of net
short-term  capital  gains,   whether  taken  in  cash  or  reinvested  in
additional  shares,  are taxable to shareholders as ordinary income and do
not qualify for the dividends  received  deduction for  corporations.  Net
long-term   capital  gain   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-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.
         The  Fund  is  required  to   withhold   31%  of  any   dividends
(including  long-term  capital  gain  dividends,   if  any)  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;  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 of dividends withheld.
         Shareholders    exempt   from   backup    withholding    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; and foreign central banks
of issue.  Non-resident  aliens also are  generally  not subject to backup
withholding  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 should call or write the Fund for further information.
         Many  states  do not  tax the  portion  of the  Fund's  dividends
which is derived from  interest on U.S.  Government  obligations.  The law
of the states varies  concerning the tax status of dividends  derived from
U.S.  Government  obligations.  Accordingly,  shareholders  should consult
their tax  advisors  about the tax status of dividends  and  distributions
from the Fund in their respective jurisdictions.

==========================================================================
                             NET ASSET VALUE
==========================================================================

         The net asset  value  per  share of the Fund,  the price at which
shares are continuously  issued and redeemed,  is computed by dividing the
value of the  Fund's  total  assets,  less its  liabilities,  by the total
number  of  shares  outstanding.  Net  asset  value  is  determined  every
business  day at the  close of the New  York  Stock  Exchange  (generally,
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,  Presidents'  Day,  Good  Friday,  Memorial  Day,
Independence Day, Labor Day, Thanksgiving Day, and Christmas Day.
         The Fund's  assets,  including  securities  subject to repurchase
agreements,  are normally  valued at their  amortized  cost which does not
take into  account  unrealized  capital  gains or  losses.  This  involves
valuing  an  instrument  at its cost and  thereafter  assuming  a constant
amortization  to maturity of any  discount or premium,  regardless  of the
impact  of  fluctuating   interest  rates  on  the  market  value  of  the
instrument.  While this method  provides  certainty in  valuation,  it may
result in periods  during which value,  as determined  by amortized  cost,
is higher or lower  than the price  that  would be  received  upon sale of
the  instrument.  During periods of declining  interest  rates,  the daily
yield  on  shares  of  the  Fund  may  tend  to  be  higher  than  a  like
computation made by a fund with identical  investments  utilizing a method
of valuation  based upon market  prices and estimates of market prices for
all of its portfolio  instruments.  Thus, if the use of amortized  cost by
the Fund  resulted in a lower  aggregate  portfolio  value on a particular
day,  a  prospective  investor  in the  Fund  would  be able to  obtain  a
somewhat  higher  yield  than  would  result  from  investment  in a  fund
utilizing solely market values,  and existing  investors in the Fund would
receive less  investment  income.  The converse would apply in a period of
rising interest rates.
         Rule 2a-7 under the  Investment  Company Act of 1940  permits the
Fund to  value  its  assets  at  amortized  cost if the Fund  maintains  a
dollar-weighted  average  maturity  of 90 days or less and only  purchases
obligations  having  remaining  maturities of 13 months or less. Rule 2a-7
further  requires,  as a condition  of its use,  that the Fund invest only
in  obligations  determined  by the  Trustees to be of high  quality  with
minimal  credit risks and  requires  the Trustees to establish  procedures
designed  to  stabilize,  to the extent  reasonably  possible,  the Fund's
price per share as computed  for the purpose of sales and  redemptions  at
$1.00. Such procedures  include review of the Fund's  investment  holdings
by the  Trustees,  at such  intervals  as they  may deem  appropriate,  to
determine   whether  the  Fund's  net  asset  value  calculated  by  using
available  market  quotations  or  equivalents  deviates  from  $1.00  per
share.  If such  deviation  exceeds l/2 of 1%, the Trustees  will promptly
consider  what  action,  if  any,  will be  initiated.  In the  event  the
Trustees  determine  that a deviation  exists which may result in material
dilution or other unfair  results to  investors or existing  shareholders,
the  Trustees  will  take  such  corrective   action  as  they  regard  as
necessary and appropriate,  including:  the sale of portfolio  instruments
prior to  maturity  to  realize  capital  gains or  losses  or to  shorten
average  portfolio  maturity;  the  withholding of dividends or payment of
distributions  from  capital or capital  gains;  redemptions  of shares in
kind;  or the  establishment  of a net asset  value per share  based  upon
available market quotations.

   
Net Asset Value and Offering Price Per Share
          ($241,149,633/241,685,337 shares) $1.00
    

==========================================================================
                           CALCULATION OF YIELD
==========================================================================

         Yield is  calculated  by  dividing  the net change  exclusive  of
capital  changes in the value of a share during a  particular  base period
by the net asset  value  per share at the  beginning  of such  period  and
annualizing the result.  Capital changes  excluded from the calculation of
yield are:  (1)  realized  gains and losses  from the sale of  securities,
and (2) unrealized  appreciation  and  depreciation.  The Fund's effective
yield for a seven-day  period is its annualized  compounded  average yield
during the period, calculated according to the following formula:

          Effective yield = [(base period return + 1)365/7] - 1

For the seven day period ended  December  29,  1995,  the Fund's yield was
4.76% and effective yield was 4.87%.
         The Fund's  yield  fluctuates  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 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.

==========================================================================
                               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 Fund,
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.

==========================================================================
                    PURCHASES 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  (see
Prospectus, "How to Sell Your Shares").
         Shareholders  wishing  to use the draft  writing  service  should
complete the  signature  card enclosed  with the  Investment  Application.
The draft  writing  service  will be  subject to the  customary  rules and
regulations  governing checking accounts,  and the Fund reserves the right
to change or suspend  the  service.  Generally,  there is no charge to you
for the  maintenance  of this service or the clearance of drafts,  but the
Fund  reserves  the right to charge a service fee for drafts  returned for
uncollected  or  insufficient   funds,   and  will  charge  $25  for  stop
payments.  As a  service  to  shareholders,  the  Fund  may  automatically
transfer the dollar  amount  necessary to cover drafts you have written on
the  Fund to  your  Fund  account  from  any  other  of  your  identically
registered  accounts  in Calvert  money  market  funds or Calvert  Insured
Plus. The Fund may charge a fee for this service.
         When a payable  through  draft is presented to the  Custodian for
payment,  a  sufficient  number  of full and  fractional  shares  from the
shareholder's  account to cover the  amount of the draft will be  redeemed
at the net asset value next determined.  If there are insufficient  shares
in  the  shareholder's   account,  the  draft  may  be  returned.   Drafts
presented  for  payment  which  would  require  the  redemption  of shares
purchased by check or  electronic  funds  transfer  within the previous 10
business days may not be honored.
         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 to Calvert  Group,  P.O.  Box  419544,  Kansas
City,  MO  64141-6544,  with a voided  copy of a check for the bank wiring
instructions  to be  added.  If a  voided  check  does not  accompany  the
request,  then the request  must be signature  guaranteed  by a commercial
bank,  savings and loan  association,  trust  company,  member firm of any
national securities exchange,  or credit union. Further  documentation may
be required from corporations, fiduciaries, and institutional investors.
         The right of  redemption  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  SEC,  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 after a proper  redemption
request has been  received,  unless  redemptions  have been  suspended  or
postponed as described above.
    

==========================================================================
                          TRUSTEES AND OFFICERS
==========================================================================

   
         RICHARD  L.  BAIRD,  JR.,  Trustee.  Mr.  Baird  is  Director  of
Finance for the 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.  Age:
47. 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.
Age: 59.  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.  Age:  46.  Address:  2040
Nuuanu Avenue #1805, Honolulu, Hawaii, 96817.
         <F1> 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.  Age: 73.  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. Age: 47. Address: 7536 Pepperell Drive, Bethesda, Maryland 20817.
         PETER W.  GAVIAN,  CFA,  Trustee.  Mr.  Gavian was a principal of
Gavian De Vaux  Associates,  an  investment  banking firm. He continues to
be  President  of with  Corporate  Finance of  Washington,  Inc.  Age: 63.
Address: 3005 Franklin Road North, Arlington, 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.  Age:  47.  Address:  7205  Pomander  Lane,  Chevy
Chase, Maryland 20815.
         ARTHUR  J.  PUGH,  Trustee.  Mr.  Pugh  serves as a  Director  of
Acacia Federal  Savings Bank.  Age: 58.  Address:  4823  Prestwick  Drive,
Fairfax, Virginia 22030.
         1 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. Age: 58. Address:  Box
93, Chelsea, Vermont 05038.
         <F1>   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.  Age: 47.  Address:  1715 18th
Street, N.W., Washington, D.C. 20009.
         <F1> CLIFTON S. SORRELL,  JR.,  President and Trustee.  Mr.  Sorrell
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.   He  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. Age: 54.
         <F1> RENO J.  MARTINI,  Senior  Vice  President.  Mr.  Martini  is a
director and 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. Age: 46.
         <F1> 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. Age: 43.
        <F1> 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.  Age:
48.
         <F1> EVELYNE S. STEWARD,  Vice President.  Ms. Steward is a director
and Senior  Vice  President  of Calvert  Group,  Ltd.,  and a director  of
Calvert-Sloan  Advisers,  L.L.C. She is the sister of Philip J. Schewetti,
the portfolio manager of the CSIF Equity Portfolio. Age: 43.
         <F1> 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. Age: 45.
         <F1> SUSAN WALKER BENDER, Esq.,  Assistant Secretary.  Ms. Bender is
Associate  General  Counsel of Calvert Group,  Ltd. 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. Age: 37.
    
_________
<F1>  Officers and trustees deemed to be "interested persons" of the Fund
under the Investment Company Act of 1940, by virtue of their affiliation
with the Fund's Advisor.


         Each of the above  named  trustees  and  officers is a 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,  Silby and Sorrell are among the  Trustees,
Acacia Capital Corporation,  of which only Messrs.  Sorrell,  Blatz, Diehl
and Pugh are among the  Directors,  Calvert  World Values Fund,  Inc.,  of
which only Messrs.  Guffey,  Silby,  and Sorrell are among the  Directors,
and  Calvert  New World  Fund,  Inc.,  of which only  Messrs.  Sorrell and
Martini are among the  Directors.  The address of Trustees  and  Officers,
unless   otherwise  noted,  is  4550  Montgomery   Avenue,   Suite  1000N,
Bethesda,  Maryland 20814.  Trustees and Officers as a group own less than
1% of the Portfolio's outstanding shares.
         The  Board's  Audit  Committee  is  composed  of  Messrs.  Baird,
Blatz,  Feldman,  Guffey and Pugh.  The  Investment  Policy  Committee  is
composed of Messrs. Borts, Diehl, Gavian, Rochat, Silby and Sorrell.
         During  fiscal  1995,  trustees of the Fund not  affiliated  with
the  Fund's   Advisor  were  paid  $20,486.   Trustees  of  the  Fund  not
affiliated  with the  Advisor  presently  receive an annual fee of $20,250
for service as a member of the Board of  Trustees of the Calvert  Group of
Funds,  and a fee of $750 to $1200  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 1995 (unaudited       Aggregate Compensation from  
numbers)                          Registrant for service as    
                                  Trustee                      
Name of Trustee
 ..............................................................
Richard L. Baird, Jr.             $2,330                       
Frank H. Blatz, Jr.               $2,351                       
Frederick T. Borts                $1,638                       
Charles E. Diehl                  $2,264                       
Douglas E. Feldman                $2,211                       
Peter W. Gavian                   $2,243                       
John G. Guffey, Jr.               $2,243                       
Arthur J. Pugh                    $2,351                       
D. Wayne Silby                    $2,157                       


Fiscal Year 1995 (unaudited      Pension or Retirement        
numbers)                         Benefits Accrued as part     
                                 of Registrant Expenses<F2>      
Name of Trustee                                              
 .............................................................
Richard L. Baird, Jr.            $0                           
Frank H. Blatz, Jr.              $2,351                       
Frederick T. Borts               $0                           
Charles E. Diehl                 $2,264                       
Douglas E. Feldman               $0                           
Peter W. Gavian                  $673                         
John G. Guffey, Jr.              $0                           
Arthur J. Pugh                   $0                           
D. Wayne Silby                   $0                           
    

<F2>  Messrs. Blatz, Diehl, Gavian, and Pugh have chosen to defer a portion
of their compensation. As of December 31, 1995, total deferred
compensation, including dividends and capital appreciation, was
$415,719, $337,395, $89,054, and $150,841, for each trustee,
respectively


   
Fiscal Year 1995 (unaudited      Total Compensation from     
numbers)                         Registrant and Fund Complex 
                                 paid to Trustees<F3>           
Name of Trustee                                               
 ..............................................................
Richard L. Baird, Jr.            $33,450                     
Frank H. Blatz, Jr.              $36,801                     
Frederick T. Borts               $25,050                     
Charles E. Diehl                 $35,101                     
Douglas E. Feldman               $30,600                     
Peter W. Gavian                  $31,951                     
John G. Guffey, Jr.              $40,450                     
Arthur J. Pugh                   $36,801                     
D. Wayne Silby                   $47,965                     
    

<F3> As of December 31, 1995. The Fund Complex consists of eight (8)
registered investment companies.




==========================================================================
                            INVESTMENT ADVISOR
==========================================================================

   
         The  Fund's  Investment   Advisor  is  Calvert  Asset  Management
Company,  Inc., 4550 Montgomery Avenue,  Suite 1000N,  Bethesda,  Maryland
20814,  a subsidiary  of Calvert  Group,  Ltd.,  which is a subsidiary  of
Acacia Mutual Life Insurance Company of Washington, D.C.
         The Advisory  Contract (the "Contract")  between the Fund and the
Advisor  will  remain  in effect  indefinitely,  provided  continuance  is
approved  at least  annually  by the 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,  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 fund and  oversees  its  day-to-day  operations,  subject to direction
and  control  by the  Fund's  Board of  Trustees.  For its  services,  the
Advisor  receives a fee of 0.50% of the first $500  million of the average
daily  net  assets of the Fund,  0.45% of the next  $400  million  of such
assets,  0.40% of the next $400 million of such assets,  0.35% of the next
$700  million  of such  assets,  and  0.30% on all  assets in excess of $2
billion. Such fee is payable monthly.
         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 for Class O shares.  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.  However,  the Advisor has agreed to reimburse  the
Fund  for  all  expenses  (excluding  brokerage,   taxes,   interest,  and
extraordinary  items)  exceeding,  on a pro rata  basis,  1% of the Fund's
average daily net assets.
         The  advisory  fees  paid  to  the  Advisor  under  the  Advisory
Contract  for the 1993,  1994,  and 1995  fiscal  years  were  $1,423,906,
$1,254,576, and $1,182,171,  respectively.  No expense reimbursements have
been required under the Contract.
    

==========================================================================
                 TRANSFER AND SHAREHOLDER SERVICING AGENT
==========================================================================

         Calvert  Shareholder  Services,  Inc.,  a  subsidiary  of Calvert
Group,  Ltd., and Acacia  Mutual,  has been retained by the Fund to act as
transfer  agent,  dividend  disbursing  agent  and  shareholder  servicing
agent.   These   responsibilities   include:   responding  to  shareholder
inquiries  and  instructions  concerning  their  accounts;  crediting  and
debiting  shareholder  accounts  for  purchases  and  redemptions  of Fund
shares and  confirming  such  transactions;  daily updating of shareholder
accounts to reflect  declaration  and payment of dividends;  and preparing
and  distributing  quarterly  statements to  shareholders  regarding their
accounts. For such services,  Calvert Shareholder Services,  Inc. receives
compensation  based on the number of  shareholder  accounts and the number
of  transactions.  For its fiscal years ended December 31, 1993, 1994, and
1995, the Fund paid Calvert Shareholder  Services,  Inc. fees of $568,668,
$509,155, and $556,450, respectively.

==========================================================================
                          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 Fund's  Advisor  under the
direction and supervision of the Fund's Board of Trustees.
         It is  intended  that all  securities  maturing  in more than one
year will be held to  maturity.  Sales of  securities  to  facilitate  the
redemption  of  Fund  shares  is  contemplated,  but  such  sales  will be
primarily  from the  short-term  instruments  in the Fund's  portfolio  on
which brokerage  charges,  if any, are minimal.  The Fund anticipates that
its portfolio  turnover rate with respect to  securities  with  maturities
in excess of one year will be no more than 5%.
         Broker-dealers  who execute  portfolio  transactions on behalf of
the Fund are selected on the basis of their  professional  capability  and
the value and quality of their  services.  The Advisor  reserves the right
to place  orders for the  purchase of sale of  portfolio  securities  with
dealers who provide it with  statistical,  research,  or other information
and services.  Although any statistical,  research,  or other  information
and  services  provided  by  dealers  may be  useful to the  Advisor,  the
dollar  value of such  information  is generally  indeterminable,  and its
availability   or  receipt  does  not  serve  to  materially   reduce  the
Advisor's   normal   research   activities   or  expenses.   No  brokerage
commissions have been paid to any  broker-dealer  that provided the Fund's
Advisor with research or other services.
         The  Advisor  may also  execute  portfolio  transactions  with or
through  broker-dealers  who have sold shares of the Fund.  However,  such
sales   will  not  be  a   qualifying   or   disqualifying   factor  in  a
broker-dealer's  selection nor will the selection of any  broker-dealer be
based on the volume of Fund shares sold.  The Advisor may  compensate,  at
its expense,  such  broker-dealers  in consideration of their  promotional
and administrative services.

==========================================================================
                  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 1996.  State
Street  Bank  &  Trust  Company,   N.A.,  225  Franklin  Street,   Boston,
Massachusetts  02110,  currently  serves as custodian  of the  Portfolio's
investments.  First  National Bank of Maryland,  25 South Charles  Street,
Baltimore,  Maryland  21203  also  serves as  custodian  of certain of the
Portfolio's  cash assets.  Neither  custodian has any part in deciding the
Portfolio's  investment  policies or the choice of securities  that are to
be purchased or sold for the Portfolio.
    

==========================================================================
                           GENERAL INFORMATION
==========================================================================

         The Fund is  organized as a  Massachusetts  business  trust,  and
has two series.  The first series,  Calvert First  Government Money Market
Fund,  was known as First  Variable  Rate Fund prior to September 1, 1991.
The second series is Calvert Florida  Municipal  Intermediate  Fund. Prior
to April 30, 1984, the Fund was organized as a Maryland  corporation.  The
Fund's   Declaration   of  Trust   contains  an  express   disclaimer   of
shareholder   liability  for  acts  or   obligations   of  the  Fund.  The
shareholders  of  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 Fund assets for any  shareholder  held
personally  liable for  obligations of the Fund. The  Declaration of Trust
provides  that the Fund  shall,  upon  request,  assume the defense of any
claim made against any  shareholder  for any act or obligation of the Fund
and  satisfy  any  judgment  thereon.  The  Declaration  of Trust  further
provides that the Fund may maintain  appropriate  insurance  (for example,
fidelity  bonding and errors and omissions  insurance)  for the protection
of the Fund, 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 Fund itself is unable to meet its obligations.
         The Fund will send its  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 Fund's  registration  statement.
The  registration  statement is on file with the  Securities  and Exchange
Commission and is available to the public.


                           FINANCIAL STATEMENTS


   
     The  audited  financial  statements  included  in the  Fund's  Annual
Report  to   Shareholders   dated   December   31,   1995  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 Fund.
    


<PAGE>



                                                                        
                                                                        

                        PART C. OTHER INFORMATION


Item 24.  Financial Statements and Exhibits

         (a)      Financial statements

                  Financial statements incorporated by reference
                  to:

                  Registrant's audited Annual Report to Shareholders of
                  Calvert First Government Money Market Fund, dated
                  December 31, 1995, and filed March 11, 1996.

                  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 Post-Effective
                           Amendment No. 11, May 1, 1984).

                  2.       By-Laws (incorporated by reference to
                           Registrant's Post-Effective Amendment No. 11,
                           May 1, 1984).

                  4.       Specimen Stock Certificate, (incorporated by
                           reference to Registrant's Post-Effective
                           Amendment No. 19, April 30, 1992).

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

                  6.       Underwriting and Dealer Agreements, incorporated by 
                           reference to Registrant's Post-Effective Amendment 
                           No. 16, April 28, 1989 and incorporated by reference
                           to Registrant's Post-Effective Amendment No.
                           31, April 30, 1995.

                  7.       Trustees' Deferred Compensation
                           Agreement, (incorporated by reference
                           to Registrant's Post-Effective
                           Amendment No. 19, April 30, 1992).

                  8.       Custodial Contract, (incorporated by reference
                           to Registrant's Post-Effective Amendment No.
                           4, April 21, 1980).

                  9.       Transfer Agency Contract (incorporated by
                           reference to Registrant's Post-Effective
                           Amendment No. 11, May 1, 1984).

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

                  11.      Consent of Independent Accountants to Use of
                           Report.

                  14.      Retirement Plans (incorporated by reference to
                           Registrant's Post-Effective Amendment No. 19,
                           April 30, 1992, and incorporated by reference
                           to Registrant's Post-Effective Amendment No.
                           16, April 28, 1989).

                  15.      Plan of Distribution for the Florida Municipal
                           Intermediate Fund only, filed herewith.

                  16.      Schedule for Computation of Performance
                           Quotation (incorporated by reference to
                           Registrant's Post-Effective Amendment No. 15,
                           April 30, 1988).
          
                  17. (i)  Financial Data Schedules

                  18.      Funds Multiple Class Plan under Rule 18f-3
                           dated January 25, 1996 (filed herewith).



         Exhibits 3, 12, 13 and 15 are omitted because they are
         inapplicable.


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

         Registrant is controlled by its Board of Trustees, which is a
common Board with five registered investment companies, First Variable
Rate Fund, Calvert Tax-Free Reserves, Calvert Cash Reserves (doing
business as Money Management Plus), The Calvert Fund, and Calvert
Municipal Fund, Inc.  In addition, several members of Registrant's Board
of Trustees also serve on the Boards of Calvert Social Investment Fund,
Acacia Capital Corporation, Calvert New World Fund, Inc., and Calvert
World Values Fund, Inc.


Item 26.  Number of Holders of Securities


         As of March 31, 1996, there were 15,327 holders of record
         of Registrant's shares of beneficial interest for the Calvert
         First Government Money Market Fund series of First Variable
         Rate Fund for Government Income.

         As of March 31, 1996 there were 56 holders of record
         of Registrant's shares of beneficial interest for the Class A
         shares of Calvert Florida Municipal Intermediate Fund series of
         First Variable Rate Fund for Government Income.

         As of March 31, 1996 there were 23 holders of record
         of Registrant's shares of beneficial interest for the Class C
         shares of Calvert Florida Municipal Intermediate Fund series of
         First Variable Rate Fund for Government Income.

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 a $9
million Investment Company Blanket Bond issued by ICI Mutual Insurance
Company, P.O. Box 730, Burlington, Vermont, 05402, and an additional $5
million in excess of $9 million blanket bond with Chubb Group of
Insurance Companies, 15 Mountain View Road, Warren, New Jersey  07061.


Item 28. Business and Other Connections of Investment Adviser

Name                         Name of Company, Principal          Capacity
                             Business and Address       

Clifton S.
Sorrell, Jr.                 Acacia Capital Corporation          Officer
                             Calvert Municipal Fund, Inc.        and
                             Calvert World Values Fund, Inc.     Director

                             Investment Companies
                             4550 Montgomery Avenue
                             Bethesda, Maryland  20814
                                    ---------------
                             Calvert Asset Management            Officer
                             Company, Inc.                       and 
                             Investment Advisor                  Director
                             4550 Montgomery Avenue
                             Bethesda, MD  20814
                                    ----------------
                             Calvert Group, Ltd.                 Officer
                             Holding Company                     and
                             4550 Montgomery Avenue              Director
                             Bethesda, MD  20814
                                    ----------------
                             Calvert Shareholder                 Officer
                             Services, Inc.                      and
                             Transfer Agent                      Director
                             4550 Montgomery Avenue
                             Bethesda, Maryland 20814
                                    ---------------
                             Calvert Administrative              Officer
                             Services Company                    and
                             Service Company                     Director
                             4550 Montgomery Avenue
                             Bethesda, Maryland 20814
                                    ---------------
                             Calvert Distributors, Inc.          Director
                             Broker-Dealer
                             4550 Montgomery Avenue
                             Bethesda, Maryland 20814
                                    ---------------
                             First Variable Rate Fund for        Officer
                             Government Income                   and
                             Calvert Tax-Free Reserves           Trustee 
                             Calvert Social Investment Fund
                             Money Management Plus     
                             The Calvert Fund

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


Item 28. Business and Other Connections of Investment Adviser

 Name                          Name of Company, Principal        Capacity
                               Business and Address      


Ronald M.                      First Variable Rate Fund          Officer 
Wolfsheimer                    for Government Income
                               Calvert Tax-Free Reserves 
                               Money Management Plus
                               Calvert Social Investment Fund
                               The Calvert Fund
                               Acacia Capital Corporation
                               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          Officer
                               Company, Inc.
                               Investment Advisor
                               4550 Montgomery Avenue
                               Bethesda, Maryland 20814
                                    ---------------
                               Calvert Group, Ltd.               Officer
                               Holding Company
                               4550 Montgomery Avenue
                               Bethesda, Maryland 20814
                                    ---------------
                               Calvert Shareholder               Officer
                               Services, Inc.
                               Transfer Agent
                               4550 Montgomery Avenue
                               Bethesda, Maryland 20814
                                    ---------------
                               Calvert Administrative             Officer
                               Services Company                   and
                               Service Company                    Director
                               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, Md. 20814
                                    ---------------



Item 28. Business and Other Connections of Investment Adviser

 Name                           Name of Company, Principal      Capacity
                                Business and Address      



David R. Rochat                 First Variable Rate Fund for     Officer
                                Government Income                and
                                Calvert Tax-Free Reserves        Trustee 
                                Money Management Plus       
                                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         Officer
                                Company, Inc.                    and
                                Investment Advisor               Director
                                4550 Montgomery Avenue
                                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
                                    ---------------



Item 28. Business and Other Connections of Investment Adviser

 Name                       Name of Company, Principal           Capacity
                            Business and Address     


Reno J. Martini             Calvert Asset Management             Officer
                            Company, Inc.
                            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 
                            Money Management Plus
                            Calvert Social Investment Fund
                            The Calvert Fund
                            Acacia Capital Corporation
                            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, Md. 20814
                                    ---------------

Charles T. Nason            Acacia Mutual Life Insurance         Officer
                            Acacia National Life Insurance       and
                            Insurance Companies                  Director
                            51 Louisiana Avenue, NW
                            Washington, D.C.  20001
                                    ---------------
                            Acacia Financial Corporation         Officer
                            Holding Company                      and
                            51 Louisiana Avenue, NW              Director
                            Washington, D.C.  20001
                                    ---------------
                            Gardner Montgomery CompanyDirector
                            Tax Return Preparation Services
                            51 Louisiana Avenue, NW
                            Washington, D.C. 20001
                                    ----------------



Item 28. Business and Other Connections of Investment Adviser

  Name                      Name of Company, Principal           Capacity
                            Business and Address      


Charles T. Nason            Acacia Federal Savings Bank          Director
(continued)                 Savings Bank
                            7600-B Leesburg Pike
                            Falls Church, Virginia 22043
                                    ---------------
                            Enterprise Resources, Inc.           Director
                            Business Support Services
                            51 Louisiana Avenue, NW
                            Washington, D.C.  20001
                                    ---------------
                            Acacia Insurance Management          Officer
                            Services Corporation                 and
                            Service Corporation                  Director
                            51 Louisiana Avenue, N.W. 
                            Washington, D.C.  20001
                                    ---------------
                            Calvert Group, Ltd.                  Director
                            Holding Company
                            4550 Montgomery Avenue
                            Bethesda, MD  20814
                                    ---------------
                            Calvert Administrative               Director
                            Services Co.
                            Service Company
                            4550 Montgomery Avenue
                            Bethesda, MD  20814
                                    ---------------
                            Calvert Asset Management Co., Inc.   Director
                            Investment Advisor
                            4550 Montgomery Avenue
                            Bethesda, MD  20814
                                    ---------------
                            Calvert Shareholder Services, Inc.   Director
                            Transfer Agent
                            4550 Montgomery Avenue
                            Bethesda, MD  20814
                                    ---------------
                            Calvert Social Investment Fund       Trustee
                            Investment Company
                            4550 Montgomery Avenue
                            Bethesda, Maryland 20814
                                    -----------------
                            The Advisors Group, Inc.             Director
                            Broker-Dealer and
                            Investment Advisor
                            51 Louisiana Avenue, NW
                            Washington, D.C. 20001
                                    ---------------



Item 28.  Business and Other Connections of Investment Adviser

 Name                       Name of Company, Principal           Capacity
                            Business and Address      

Robert-John H.              Acacia National Life Insurance       Officer
Sands                       Insurance Company                    and
                            51 Louisiana Avenue, NW              Director
                            Washington, D.C.  20001
                                    ----------------
                            Acacia Mutual Life Insurance         Officer
                            Insurance Company
                            51 Louisiana Avenue, NW
                            Washington, D.C.  20001
                                    ----------------
                            Acacia Financial Corporation         Officer
                            Holding Company                      and  
                            51 Louisiana Avenue, NW              Director
                            Washington, D.C.  20001
                                    ----------------
                            Acacia Federal Savings Bank          Officer
                            Savings Bank
                            7600-B Leesburg Pike
                            Falls Church, Virginia 22043
                                    ---------------
                            Enterprise Resources, Inc.           Director
                            Business Support Services
                            51 Louisiana Avenue, NW
                            Washington, D.C.  20001
                                    ---------------
                            Acacia Realty Corporation            Officer
                            Real Estate Investments
                            51 Louisiana Avenue, NW
                            Washington, D.C.  20001
                                    ---------------
                            Acacia Insurance Management          Officer
                            Services Corporation                 and
                            Service Corporation                  Director
                            51 Louisiana Avenue, N.W. 
                            Washington, D.C.  20001
                                    ---------------
                            Gardner Montgomery Company           Officer
                            Tax Return Preparation Service       and
                            51 Louisiana Avenue, NW              Director
                            Washington, D.C. 20001
                                    ----------------
                            The Advisors Group, Inc.             Director
                            Broker-Dealer and
                            Investment Advisor
                            51 Louisiana Avenue, NW
                            Washington, D.C. 20001
                                    ---------------



Item 28.  Business and Other Connections of Investment Adviser

  Name                     Name of Company, Principal           Capacity
                           Business and Address      

Robert-John H.             Calvert Group, Ltd.                  Director
Sands                      Holding Company
(continued)                4550 Montgomery Avenue
                           Bethesda, MD  20814
                                    ---------------
                           Calvert Administrative                Director
                           Services, Co.
                           Service Company
                           4550 Montgomery Avenue
                           Bethesda, MD  20814
                                    ---------------
                           Calvert Asset Management Co., Inc.    Director
                           Investment Advisor
                           4550 Montgomery Avenue
                           Bethesda, MD  20814
                                    ---------------
                           Calvert Shareholder Services, Inc.    Director
                           Transfer Agent
                           4550 Montgomery Avenue
                           Bethesda, Maryland  20814
                                    ---------------

William M. Tartikoff       Acacia National Life Insurance        Officer
                           Insurance Company
                           51 Louisiana Avenue, NW
                           Washington, D.C.  20001
                                    ----------------
                           First Variable Rate Fund for          Officer
                           Government Income
                           Calvert Tax-Free Reserves
                           Money Management Plus
                           Calvert Social Investment Fund
                           The Calvert Fund
                           Acacia Capital Corporation
                           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
                                    ---------------



Item 28.  Business and Other Connections of Investment Adviser

 Name                      Name of Company, Principal             Capacity
                           Business and Address      



William M. Tartikoff      Calvert Administrative                Officer
(continued)               Services Company
                          Service Company
                          4550 Montgomery Avenue
                          Bethesda, Maryland  20814
                                    ---------------
                          Calvert Asset Management               Officer
                          Company, Inc.
                          Investment Advisor
                          4550 Montgomery Avenue
                          Bethesda, Maryland  20814
                                    ----------------
                          Calvert Shareholder                    Officer
                          Services, Inc.
                          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, L.L.C.         Officer
                          Investment Advisor
                          4550 Montgomery Avenue
                          Bethesda, Maryland 20814
                                    ----------------


Item 28.  Business and Other Connections of Investment Adviser

  Name                    Name of Company, Principal             Capacity
                          Business and Address      



Susan Walker  Bender     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                  Officer
                        Company, Inc.
                        Investment Advisor
                        4550 Montgomery Avenue
                        Bethesda, Maryland  20814
                                    ----------------
                        Calvert Shareholder                      Officer
                        Services, Inc.
                        Transfer Agent
                        4550 Montgomery Avenue
                        Bethesda, Maryland  20814
                                    ----------------
                        Calvert Distributors, Inc.               Officer

                        Broker-Dealer
                        4550 Montgomery Avenue
                        Bethesda, Maryland  20814
                                    ----------------
                        Calvert-Sloan Advisers, L.L.C.           Officer
                        Investment Advisor
                        4550 Montgomery Avenue
                        Bethesda, Maryland  20814
                                    ----------------
                        First Variable Rate Fund for             Officer
                        Government Income
                        Calvert Tax-Free Reserves 
                        Money Management Plus
                        Calvert Social Investment Fund
                        The Calvert Fund
                        Acacia Capital Corporation
                        Calvert Municipal Fund, Inc.
                        Calvert World Values Fund, Inc.
                        Calvert New World Fund, Inc.

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



Item 28.  Business and Other Connections of Investment Adviser

 Name                   Name of Company, Principal               Capacity
                        Business and Address     


Daniel K. Hayes         Calvert Asset Management                 Officer
                        Company, Inc.
                        Investment Advisor
                        4550 Montgomery Avenue
                        Bethesda, Maryland  20814
                                    ------------------
                        First Variable Rate Fund                 Officer
                        for Government Income
                        Calvert Tax-Free Reserves 
                        Money Management Plus
                        Calvert Social Investment Fund
                        The Calvert Fund
                        Acacia Capital Corporation
                        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
                                    ------------------




Item 29.  Principal Underwriters

         (a)    Registrant's principal underwriter also underwrites
shares of Calvert Tax-Free Reserves, Calvert Social Investment Fund,
Calvert Cash Reserves (d/b/a Money Management Plus), The Calvert Fund,
Calvert Municipal Fund, Inc., Calvert World Values Fund, Inc., Calvert
New World Fund, Inc., and Acacia Capital Corporation.

         (b)    Positions of Underwriter's Officers and Directors

Name and Principal          Position(s) with             Position(s) with
Business Address            Underwriter                  Registrant
       
                          
Clifton S. Sorrell, Jr.     Director                     President and Trustee

Ronald M. Wolfsheimer       Director, Senior             Treasurer
                            Vice President                
                            and Controller

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

Steven J. Schueth           President                    None

Karen Becker                Vice President               None

Robert Knaus                Regional Vice President      None

Lee Mahfouz                 Regional Vice President      None



Item 29.  Principal Underwriter (continued)

         (b)    Positions of Underwriter's Officers and Directors
(continued)

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


Susan Walker Bender         Assistant Secretary        Assistant Secretary

Katherine Stoner            Assistant Secretary        None

Lisa Crossley               Compliance Officer         None

The principal business address of the above individuals is 4550
Montgomery Avenue, Suite 1000N, Bethesda, Maryland  20814.

         (c) Inapplicable.


Item 30.  Location of Accounts and Records

         Ronald M. Wolfsheimer, Treasurer
         and
         William M. Tartikoff, 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 17th day of April, 1996.

                                                 FIRST VARIABLE RATE FUND
                                                 FOR GOVERNMENT INCOME


                                                 By:                       
                                                 
                                                 /s/Clifton S. Sorrell, Jr.
                                                 Clifton S. Sorrell, Jr.
                                                 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


________________________          Trustee and             04/29/96
Clifton S. Sorrell, Jr.           Principal Executive
Officer


________________________          Principal Accounting     04/29/96
Ronald M. Wolfsheimer             Officer


__________**____________          Trustee                  04/29/96
Richard L. Baird, Jr.


__________**____________          Trustee                  04/29/96
Frank H. Blatz, Jr., Esq.


__________**____________           Trustee                 04/29/96
Frederick T. Borts, M.D.


__________**____________           Trustee                 04/29/96
Charles E. Diehl


__________**____________           Trustee                 04/29/96
Douglas E. Feldman


__________**____________           Trustee                 04/29/96
Peter W. Gavian


__________**____________           Trustee                 04/29/96
John G. Guffey, Jr.


__________**____________           Trustee                 04/29/96
Arthur J. Pugh


________________________           Trustee                 04/29/96
David R. Rochat


__________**____________           Trustee                 04/29/96            
D. Wayne Silby


**  Signed by Katherine (Thomas) Stoner pursuant to power of attorney, 
attached hereto.

/s/Katherine (Thomas) Stoner

<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

Ex-99
24(18)                                   Rule 18f-3 Multiple Class Plan 












                                                                Exhibit 10





                                                 April 29, 1996


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


         Re:      Exhibit 10, Form N-1A
                  First Variable Rate Fund for Government Income
                  File numbers 2-56809 and 811-2633


Ladies and Gentlemen:

         As counsel to Calvert Group, Ltd., it is my opinion that the
securities being registered by this Post-Effective Amendment No. 33 will
be legally issued, fully paid and non-assessable when sold.  My opinion
is based on an examination of documents related to First Variable Rate
Fund for Government Income (the "Trust"), including its Declaration of
Trust, its By-Laws, 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.

         I therefore consent to filing this opinion of counsel with the
Securities and Exchange Commission as an Exhibit to the Trust's
Post-Effective Amendment No. 33 to its Registration Statement.

                                               Sincerely,



                                                /s/Katherine Stoner
                                                Katherine Stoner
                                                Assistant Counsel




COOPERS                                           Coopers & Lybrand L.L.P.
&LYBRAND                                          a professional services firm
     

                       CONSENT OF INDEPENDENT ACCOUNTANTS

To the Board of Trustees of
First Variable Rate Fund for
Government Income


     We consent to the incorporation by reference in Post-Effective Amendment
No. 33 to the Registration Statement of First Variable Rate Fund For Government
Income (comprised of the Calvert First Government Money Market and Calvert
Florida Municipal Intermediate Funds) on Form N-1A (File Numbers 2-56809 
and 811-2633) of our reports dated February 9, 1996, on our audits of the 
financial statements and financial highlights of the Funds, which reports are 
included in the Annual Reports to Shareholders for the year ended December 31, 
1995, which are 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.

                                   /Coopers & Lybrand, L.L.P./

Baltimore, Maryland
April 17, 1996







Coopers & Lybrand L.L.P. is a member of Coopers & Lybrand International, a 
limited liability association incorporated in Switzerland


                            POWER OF ATTORNEY 


                         I, the undersigned Trustee/Director of First  
Variable Rate Fund for Government Income, Calvert Tax-Free Reserves,  
Calvert Cash Reserves (doing business as Money Management Plus), The  
Calvert Fund, and Calvert Municipal Fund, Inc. (collectively, the  
"Funds"), hereby constitute Ronald M. Wolfsheimer, William M. Tartikoff,  
Susan Walker Bender, Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                 
Date                                     Signature 




                                         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  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker Bender,  
Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                 
Date                                                          Signature 




                                            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  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker Bender,  
Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                    
Date                                            Signature 




                                                Frederick  T. Borts        
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  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker Bender,  
Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                
Date                                           Signature 




                                              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  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker Bender,  
Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                
Date                                        Signature 




                                            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  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker Bender,  
Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                
Date                                          Signature 




                                              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  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker Bender,  
Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                
Date                                         Signature 




                                              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  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker Bender,  
Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                
Date                                         Signature 




                                              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  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker Bender,  
Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                
Date                                         Signature 




                                             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  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker Bender,  
Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                
Date                                           Signature 




                                             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  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker Bender,  
Beth-ann Roth, and Katherine Stoner 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 4, 1994                                                                
Date                                         Signature 




                                             Clifton S.  Sorrell, Jr.      
Witness                                      Name of Trustee/Director 



<PAGE>

                            POWER OF ATTORNEY 


         I, the undersigned Officer of First Variable Rate Fund for  
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves  
(doing business as Money Management Plus), The Calvert Fund, and Calvert  
Municipal Fund, Inc. (collectively, the "Funds"), hereby constitute  
William M. Tartikoff, Susan Walker Bender, Beth-ann Roth, and Katherine  
Stoner 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. 



March 1, 1995                                                              
Date                                      Signature 




                                          Ronald M. Wolfsheimer            
Witness                                   Name of Officer 





<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000205355
<NAME> FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME
<SERIES>
   <NUMBER> 010
   <NAME> CALVERT FIRST GOVERNMENT MONEY MAREKT FUND
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JUN-01-1995
<PERIOD-END>                               DEC-31-1995
<INVESTMENTS-AT-COST>                           240492
<INVESTMENTS-AT-VALUE>                          240492
<RECEIVABLES>                                     1676
<ASSETS-OTHER>                                     197
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  242365
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                         1215
<TOTAL-LIABILITIES>                               1215
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        241459
<SHARES-COMMON-STOCK>                           241685
<SHARES-COMMON-PRIOR>                           230618
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          (309)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                    241150
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                13990
<OTHER-INCOME>                                      14
<EXPENSES-NET>                                    2077
<NET-INVESTMENT-INCOME>                          11927
<REALIZED-GAINS-CURRENT>                            26
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                            11953
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (12034)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         353189
<NUMBER-OF-SHARES-REDEEMED>                      11827
<SHARES-REINVESTED>                           (353969)
<NET-CHANGE-IN-ASSETS>                           10966
<ACCUMULATED-NII-PRIOR>                            108
<ACCUMULATED-GAINS-PRIOR>                        (345)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                             1182
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                   2077
<AVERAGE-NET-ASSETS>                            241150
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   .051
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                            (.051)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .88
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000205355
<NAME> FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME
<SERIES>
   <NUMBER> 021
   <NAME> CALVERT MUNICIPAL INTERMEDIATE FUND - FLORIDA, CLASS A
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JUN-01-1995
<PERIOD-END>                               DEC-31-1995
<INVESTMENTS-AT-COST>                             4036
<INVESTMENTS-AT-VALUE>                            4200
<RECEIVABLES>                                       61
<ASSETS-OTHER>                                      37
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                    4298
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            4
<TOTAL-LIABILITIES>                                  5
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          3908
<SHARES-COMMON-STOCK>                              769
<SHARES-COMMON-PRIOR>                              725
<ACCUMULATED-NII-CURRENT>                            6
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          (147)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                           126
<NET-ASSETS>                                      3893
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                  180
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                      12
<NET-INVESTMENT-INCOME>                            168
<REALIZED-GAINS-CURRENT>                             2
<APPREC-INCREASE-CURRENT>                          275
<NET-CHANGE-FROM-OPS>                              445
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (162)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            871
<NUMBER-OF-SHARES-REDEEMED>                      (774)
<SHARES-REINVESTED>                                126
<NET-CHANGE-IN-ASSETS>                             506
<ACCUMULATED-NII-PRIOR>                              1
<ACCUMULATED-GAINS-PRIOR>                        (151)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               21
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                     29
<AVERAGE-NET-ASSETS>                              3553
<PER-SHARE-NAV-BEGIN>                             4.53
<PER-SHARE-NII>                                    .24
<PER-SHARE-GAIN-APPREC>                            .38
<PER-SHARE-DIVIDEND>                             (.23)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               5.06
<EXPENSE-RATIO>                                    .35
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000205355
<NAME> FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME
<SERIES>
   <NUMBER> 022
   <NAME> CALVERT MUNICIPAL INTERMEDIATE FUND - FLORIDA, CLASS C
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JUN-01-1995
<PERIOD-END>                               DEC-31-1995
<INVESTMENTS-AT-COST>                             4036
<INVESTMENTS-AT-VALUE>                            4200
<RECEIVABLES>                                       61
<ASSETS-OTHER>                                      37
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                    4298
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            4
<TOTAL-LIABILITIES>                                  5
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                           369
<SHARES-COMMON-STOCK>                               79
<SHARES-COMMON-PRIOR>                              197
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                             (7)
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                            38
<NET-ASSETS>                                       400
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                   32
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       8
<NET-INVESTMENT-INCOME>                             24
<REALIZED-GAINS-CURRENT>                             2
<APPREC-INCREASE-CURRENT>                           44
<NET-CHANGE-FROM-OPS>                               70
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                         (24)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            850
<NUMBER-OF-SHARES-REDEEMED>                     (1437)
<SHARES-REINVESTED>                                 23
<NET-CHANGE-IN-ASSETS>                           (518)
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                          (9)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                4
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                     13
<AVERAGE-NET-ASSETS>                               619
<PER-SHARE-NAV-BEGIN>                             4.67
<PER-SHARE-NII>                                    .19
<PER-SHARE-GAIN-APPREC>                            .37
<PER-SHARE-DIVIDEND>                             (.18)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               5.05
<EXPENSE-RATIO>                                   1.25
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>



                      Rule 18f-3 Multiple Class Plan


                         First Variable Rate Fund


         Rule 18f-3 under the Investment Company Act of 1940, as amended
(the "1940 Act"), requires that an investment company desiring to offer
multiple classes of shares pursuant to the Rule adopt a plan setting
forth the differences among the classes with respect to shareholder
services, distribution arrangements, expense allocations and any related
conversion features or exchange privileges.  Any material amendment to
the plan must be approved by the investment company's Board of
Trustees/Directors, including a majority of the disinterested Board
members, who must find that the plan is in the best interests of each
class individually and the investment company as a whole.

         1.       Class Designation.  Fund shares shall be designated
either Class A or Class C.

         2.       Differences in Availability.  Class A shares and Class
C shares shall both be available through the same distribution channels,
except that Class C shares; (1) may not be available through some
dealers, and, (2) are not available for purchases of $1 million or more.

         3.       Differences in Services.  The services offered to
shareholders of each Class shall be substantially the same, except that
Rights of Accumulation, Letters of Intent and Reinvestment Privileges
shall be available only to holders of Class A shares.

         4.       Differences in Distribution Arrangements.  Class A
shares shall be offered with a front-end sales charge, as such term is
defined in Article III, Section 26(b), of the Rules of Fair Practice of
the National Association of Securities Dealers, Inc.  The amount of the
front-end sales charge on Class A shares is set forth at Exhibit I.
Class A shares shall be subject to a Distribution Plan adopted pursuant
to Rule 12b-1 under the 1940 Act.  The amount of the Distribution Plan
expenses for Class A shares, as set forth at Exhibit I, are used to pay
the Fund's Distributor for distributing the Fund's Class A shares.  This
amount includes a service fee at the annual rate of .25 of 1% of the
value of the average daily net assets of Class A.

         Class C shares shall be subject to neither a front-end sales
charge, nor a contingent deferred sales charge (CDSC).  Class C shares
shall be subject to a Distribution Plan adopted pursuant to Rule 12b-1
under the 1940 Act.  The amount of the Distribution Plan expenses for
Class C shares is set forth at Exhibit I.  The Class C Distribution Plan
pays the Fund's Distributor for distributing the Fund's Class C shares.
This amount includes a service fee at the annual rate of .25 of 1% of
the value of the average daily net assets of Class C.

         5.       Expense Allocation.  The following expenses shall be
allocated, to the extent practicable, on a Class-by-Class basis:  (a)
Distribution Plan fees; (b) transfer agent fees and expenses; (c)
printing and postage expenses payable by the Fund relating to preparing
and distributing materials, such as proxies, to current shareholders of
a specific Class; (d) class specific state registration fees; (e) class
specific litigation or other legal expenses; (f) certain class specific
reimbursement from the investment advisor ; (g) certain class specific
contract services (e.g., proxy solicitation); and (h) any other expenses
subsequently identified that, in the opinion of counsel, or the Fund's
independent public accountants are properly allocated by Class.

         6.       Conversion Features.  No Class shall be subject to any
automatic conversion feature.

         7.       Exchange Privileges.  Class A shares shall be
exchangeable only for (a) Class A shares of other funds managed,
administered, or underwritten by Calvert Group; (b) shares of funds
managed, administered or underwritten by Calvert Group which do not have
separate share classes; and (c) shares of certain other funds specified
from time to time.

         Class C shares shall be exchangeable only for (a) Class C
shares of other funds managed, administered or underwritten by Calvert
Group; (b) Class A shares of other funds managed, administered or
underwritten by Calvert Group, if the front-end load on the Class A
shares is paid at the time of the exchange; and (c) shares of certain
other funds specified from time to time.


Dated:  January 25, 1996

<PAGE>
                               
                                    EXHIBIT I

                         First Variable Rate Fund



                                    Maximum Class A           Maximum 
Class A                             Maximum Class C
                                    Front-End Sales           12b-1 Fee
12b-1 fee
                                    Charge


Florida Municipal Intermediate      2.75%                     0.25%*
0.80%




































* The Class A 12b-1 Plan limits this to 0.15% through December 31, 1998.




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