CALVERT VARIABLE SERIES INC
NSAR-A, 1999-08-24
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<PAGE>      PAGE  1
000 A000000 06/30/1999
000 C000000 0000708950
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 CALVERT VARIABLE SERIES, INC.
001 B000000 811-3591
001 C000000 3012801000
002 A000000 7315 WISCONSIN AVENUE
002 B000000 BETHESDA
002 C000000 MD
002 D010000 20814
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  5
007 C010100  1
007 C020100 CALVERT SOCIAL BALANCED
007 C030100 N
007 C010200  2
007 C020200 CALVERT SOCIAL MID-CAP GROWTH
007 C030200 N
007 C010300  3
007 C020300 CALVERT SOCIAL MONEY MARKET
007 C030300 N
007 C010400  4
007 C020400 CALVERT SOCIAL INTERNATIONAL EQUITY
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007 C010500  5
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007 C010600  6
007 C010700  7
007 C010800  8
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008 A00AA01 CALVERT ASSET MANAGEMENT COMPANY INC
008 B00AA01 A
008 C00AA01 801-0001
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008 D02AA01 MD
008 D03AA01 20814
010 A00AA01 CALVERT ADMINISTRATIVE SERVICES
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<PAGE>      PAGE  2
010 C03AA01 20814
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<PAGE>      PAGE  3
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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<PAGE>      PAGE  10
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<PAGE>      PAGE  11
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<PAGE>      PAGE  13
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SIGNATURE   WILLIAM M. TARTIKOFF
TITLE       GENERAL COUNSEL


WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000708950
<NAME> CALVERT VARIABLE SERIES
<SERIES>
   <NUMBER> 142
   <NAME> CALVERT SOCIAL BALANCED
<MULTIPLIER> 1000

<S>                             <C>
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[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000708950
<NAME> CALVERT VARIABLE SERIES
<SERIES>
   <NUMBER> 141
   <NAME> CALVERT SOCIAL MID-CAP GROWTH
<MULTIPLIER> 1000

<S>                             <C>
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<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

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<CIK> 0000708950
<NAME> CALVERT VARIABLE SERIES
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   <NUMBER> 137
   <NAME> CALVERT SOCIAL MONEY MARKET
<MULTIPLIER> 1000

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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000708950
<NAME> CALVERT VARIABLE SERIES
<SERIES>
   <NUMBER> 140
   <NAME> CALVERT SOCIAL INTERNATIONAL EQUITY
<MULTIPLIER> 1000

<S>                             <C>
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000708950
<NAME> CALVERT VARIABLE SERIES
<SERIES>
   <NUMBER> 136
   <NAME> CALVERT SOCIAL SMALL-CAP GROWTH
<MULTIPLIER> 1000

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