<PAGE> PAGE 1
000 A000000 06/30/99
000 C000000 100786
000 D000000 N
000 E000000 F
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 SELIGMAN CAPITAL FUND, INC.
001 B000000 811-1886
001 C000000 2128501864
002 A000000 100 PARK AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10017
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A000001 J & W SELIGMAN & CO. INCORPORATED
008 B000001 A
008 C000001 801-15798
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10017
011 A000001 SELIGMAN ADVISORS, INC.
011 B000001 8-25845
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10017
012 A000001 SELIGMAN DATA CORP
012 B000001 84-1895
012 C010001 NEW YORK
012 C020001 NY
012 C030001 10017
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 NEW YORK
013 B020001 NY
<PAGE> PAGE 2
013 B030001 10281
014 A000001 SELIGMAN SERVICES, INC.
014 B000001 8-47717
015 A000001 INVESTORS FIDUCIARY TRUST COMPANY
015 B000001 C
015 C010001 KANSAS CITY
015 C020001 MO
015 C030001 64105
015 C040001 1307
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 53
019 C000000 JWSELIGMAN
020 A000001 CREDIT SUISSE FIRST BOSTON CORPORATION
020 B000001 13-5659485
020 C000001 76
020 A000002 LEHMAN BROTHERS,INC.
020 B000002 13-2518466
020 C000002 75
020 A000003 ROBERTSON STEPHENS & COMPANY,LLC
020 B000003 94-2524501
020 C000003 40
020 A000004 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
020 B000004 13-2746179
020 C000004 38
020 A000005 SMITH BARNEY INC.
020 B000005 13-1912900
020 C000005 34
020 A000006 MONTGOMERY SECURITIES
020 B000006 94-1701676
020 C000006 26
020 A000007 WEEDEN & CO.
020 B000007 13-3364318
020 C000007 26
020 A000008 INSTINET CORPORATION
020 B000008 13-3443395
020 C000008 25
020 A000009 OPPENHEIMER CO.
020 B000009 13-2798343
020 C000009 16
020 A000010 (J.P.) MORGAN SECURITIES INC.
020 B000010 13-3224016
020 C000010 16
021 000000 571
022 A000001 FIRST NATIONAL BANK OF CHICAGO-GRAND CAYMAN
022 B000001 36-0899825
022 C000001 578593
022 D000001 0
022 A000002 CANADIAN IMPERIAL BK OF COMMERCE-GRAND CAYMAN
022 B000002 13-1942440
<PAGE> PAGE 3
022 C000002 367284
022 D000002 0
022 A000003 CREDIT COMMUNAL DE BELGIQUE-GRAND CAYMAN
022 B000003 13-3915825
022 C000003 259678
022 D000003 0
022 A000004 REPUBLIC NATIONAL BK OF NEW YORK-GRAND CAYMAN
022 B000004 13-2774726
022 C000004 136979
022 D000004 0
022 A000005 BANK OF NOVA SCOTIA-GRAND CAYMAN
022 B000005 03-8405740
022 C000005 133034
022 D000005 0
022 A000006 UBS-GRAND CAYMAN
022 B000006 13-2795530
022 C000006 97755
022 D000006 1660
022 A000007 BAYERISCHE VEREINSBANK-GRAND CAYMAN
022 B000007 13-2774123
022 C000007 99341
022 D000007 0
022 A000008 BANK OF MONTREAL-TORONTO
022 B000008 13-4941092
022 C000008 97994
022 D000008 0
022 A000009 PNC BANK-NASSAU
022 B000009 25-1471636
022 C000009 51216
022 D000009 0
022 A000010 WACHOVIA BANK
022 B000010 56-0927594
022 C000010 50847
022 D000010 0
023 C000000 1975751
023 D000000 100381
024 000000 N
025 D000001 0
025 D000002 0
025 D000003 0
025 D000004 0
025 D000005 0
025 D000006 0
025 D000007 0
025 D000008 0
026 A000000 Y
026 B000000 Y
026 C000000 Y
026 D000000 Y
026 E000000 N
026 F000000 Y
<PAGE> PAGE 4
026 G010000 N
026 G020000 N
026 H000000 Y
027 000000 Y
028 A010000 27958
028 A020000 0
028 A030000 0
028 A040000 27036
028 B010000 26053
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028 B030000 0
028 B040000 36684
028 C010000 46593
028 C020000 0
028 C030000 0
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028 D030000 0
028 D040000 29157
028 E010000 45342
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028 E030000 0
028 E040000 44650
028 F010000 52753
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028 F030000 0
028 F040000 53892
028 G010000 226270
028 G020000 0
028 G030000 0
028 G040000 240466
028 H000000 2880
029 000000 Y
030 A000000 92
030 B000000 4.75
030 C000000 0.00
031 A000000 10
031 B000000 0
032 000000 79
033 000000 3
034 000000 Y
035 000000 38
036 A000000 N
036 B000000 0
037 000000 N
038 000000 0
039 000000 N
040 000000 Y
041 000000 Y
042 A000000 0
<PAGE> PAGE 5
042 B000000 0
042 C000000 0
042 D000000 100
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 560
044 000000 0
045 000000 Y
046 000000 N
047 000000 N
048 000000 0.000
048 A010000 0
048 A020000 0.000
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
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048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 0
048 K020000 0.000
049 000000 N
050 000000 N
051 000000 N
052 000000 Y
053 A000000 N
054 A000000 Y
054 B000000 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 Y
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
<PAGE> PAGE 6
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 Y
055 A000000 Y
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
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061 000000 1000
062 A000000 N
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
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062 H000000 0.0
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062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 0.0
066 A000000 Y
066 B000000 N
066 C000000 Y
066 D000000 N
066 E000000 N
066 F000000 N
066 G000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 N
070 B010000 N
070 B020000 N
070 C010000 N
070 C020000 N
070 D010000 N
<PAGE> PAGE 7
070 D020000 N
070 E010000 N
070 E020000 N
070 F010000 N
070 F020000 N
070 G010000 N
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 N
070 K010000 N
070 K020000 N
070 L010000 Y
070 L020000 Y
070 M010000 N
070 M020000 N
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 254922
071 B000000 287835
071 C000000 315225
071 D000000 81
072 A000000 6
072 B000000 352
072 C000000 617
072 D000000 0
072 E000000 0
072 F000000 773
072 G000000 0
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072 I000000 334
072 J000000 42
072 K000000 25
072 L000000 32
072 M000000 12
072 N000000 26
072 O000000 0
072 P000000 0
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072 R000000 21
<PAGE> PAGE 8
072 S000000 7
072 T000000 560
072 U000000 0
072 V000000 0
072 W000000 24
072 X000000 1856
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072 Z000000 -887
072AA000000 91164
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073 A020000 0.0000
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074 A000000 23
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074 V010000 21.69
074 V020000 19.87
074 W000000 0.0000
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074 Y000000 0
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<PAGE> PAGE 9
076 000000 0.00
077 A000000 N
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083 B000000 0
084 B000000 0
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086 D010000 0
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086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
SIGNATURE THOMAS ROSE
TITLE TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 001
<NAME> SELIGMAN CAPITAL FUND, INC. CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 268066
<INVESTMENTS-AT-VALUE> 340138
<RECEIVABLES> 18156
<ASSETS-OTHER> 50
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 358344
<PAYABLE-FOR-SECURITIES> 4005
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1712
<TOTAL-LIABILITIES> 5717
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 205295
<SHARES-COMMON-STOCK> 14091<F1>
<SHARES-COMMON-PRIOR> 14875<F1>
<ACCUMULATED-NII-CURRENT> (988)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 76248
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 72072
<NET-ASSETS> 305635<F1>
<DIVIDEND-INCOME> 540<F1>
<INTEREST-INCOME> 308<F1>
<OTHER-INCOME> 0<F1>
<EXPENSES-NET> (1489)<F1>
<NET-INVESTMENT-INCOME> (641)<F1>
<REALIZED-GAINS-CURRENT> 69591
<APPREC-INCREASE-CURRENT> (42458)
<NET-CHANGE-FROM-OPS> 26246
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10316<F1>
<NUMBER-OF-SHARES-REDEEMED> (11100)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 12050
<ACCUMULATED-NII-PRIOR> (101)
<ACCUMULATED-GAINS-PRIOR> 6657
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 676<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1489<F1>
<AVERAGE-NET-ASSETS> 286447<F1>
<PER-SHARE-NAV-BEGIN> 20.06<F1>
<PER-SHARE-NII> (0.04)<F1>
<PER-SHARE-GAIN-APPREC> 1.67<F1>
<PER-SHARE-DIVIDEND> 0<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 21.69<F1>
<EXPENSE-RATIO> 1.05<F1>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>Class A only. All other data are fund level.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 002
<NAME> SELIGMAN CAPITAL FUND, INC. CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 268066
<INVESTMENTS-AT-VALUE> 340138
<RECEIVABLES> 18156
<ASSETS-OTHER> 50
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 358344
<PAYABLE-FOR-SECURITIES> 4005
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1712
<TOTAL-LIABILITIES> 5717
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 205295
<SHARES-COMMON-STOCK> 914<F1>
<SHARES-COMMON-PRIOR> 804<F1>
<ACCUMULATED-NII-CURRENT> (988)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 76248
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 72072
<NET-ASSETS> 18155<F1>
<DIVIDEND-INCOME> 29<F1>
<INTEREST-INCOME> 17<F1>
<OTHER-INCOME> 0<F1>
<EXPENSES-NET> (138)<F1>
<NET-INVESTMENT-INCOME> (92)<F1>
<REALIZED-GAINS-CURRENT> 69591
<APPREC-INCREASE-CURRENT> (42458)
<NET-CHANGE-FROM-OPS> 26246
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 827<F1>
<NUMBER-OF-SHARES-REDEEMED> (717)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 12050
<ACCUMULATED-NII-PRIOR> (101)
<ACCUMULATED-GAINS-PRIOR> 6657
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 37<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 138<F1>
<AVERAGE-NET-ASSETS> 15462<F1>
<PER-SHARE-NAV-BEGIN> 18.44<F1>
<PER-SHARE-NII> (0.11)<F1>
<PER-SHARE-GAIN-APPREC> 1.53<F1>
<PER-SHARE-DIVIDEND> 0<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 19.86<F1>
<EXPENSE-RATIO> 1.80<F1>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>Class B only. All other data are fund level.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 003
<NAME> SELIGMAN CAPITAL FUND, INC. CLASS C
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 268066
<INVESTMENTS-AT-VALUE> 340138
<RECEIVABLES> 18156
<ASSETS-OTHER> 50
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 358344
<PAYABLE-FOR-SECURITIES> 4005
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1712
<TOTAL-LIABILITIES> 5717
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 205295
<SHARES-COMMON-STOCK> 48<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> (988)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 76248
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 72072
<NET-ASSETS> 950<F1>
<DIVIDEND-INCOME> 0<F1>
<INTEREST-INCOME> 0<F1>
<OTHER-INCOME> 0<F1>
<EXPENSES-NET> (1)<F1>
<NET-INVESTMENT-INCOME> (1)<F1>
<REALIZED-GAINS-CURRENT> 69591
<APPREC-INCREASE-CURRENT> (42458)
<NET-CHANGE-FROM-OPS> 26246
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 48<F1>
<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 12050
<ACCUMULATED-NII-PRIOR> (101)
<ACCUMULATED-GAINS-PRIOR> 6657
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1<F1>
<AVERAGE-NET-ASSETS> 231<F1>
<PER-SHARE-NAV-BEGIN> 18.12<F1>
<PER-SHARE-NII> (0.02)<F1>
<PER-SHARE-GAIN-APPREC> 1.77<F1>
<PER-SHARE-DIVIDEND> 0<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 19.87<F1>
<EXPENSE-RATIO> 2.06<F1>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>Class C only. All other data are fund level.
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 004
<NAME> SELIGMAN CAPITAL FUND, INC. CLASS D
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> JUN-30-1999
<INVESTMENTS-AT-COST> 268066
<INVESTMENTS-AT-VALUE> 340138
<RECEIVABLES> 18156
<ASSETS-OTHER> 50
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 358344
<PAYABLE-FOR-SECURITIES> 4005
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1712
<TOTAL-LIABILITIES> 5717
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 205295
<SHARES-COMMON-STOCK> 1403<F1>
<SHARES-COMMON-PRIOR> 1487<F1>
<ACCUMULATED-NII-CURRENT> (988)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 76248
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 72072
<NET-ASSETS> 27887<F1>
<DIVIDEND-INCOME> 48<F1>
<INTEREST-INCOME> 27<F1>
<OTHER-INCOME> 0<F1>
<EXPENSES-NET> (228)<F1>
<NET-INVESTMENT-INCOME> (153)<F1>
<REALIZED-GAINS-CURRENT> 69591
<APPREC-INCREASE-CURRENT> (42458)
<NET-CHANGE-FROM-OPS> 26246
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 295<F1>
<NUMBER-OF-SHARES-REDEEMED> (379)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 12050
<ACCUMULATED-NII-PRIOR> (101)
<ACCUMULATED-GAINS-PRIOR> 6657
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 60<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 228<F1>
<AVERAGE-NET-ASSETS> 25593<F1>
<PER-SHARE-NAV-BEGIN> 18.45<F1>
<PER-SHARE-NII> (0.11)<F1>
<PER-SHARE-GAIN-APPREC> 1.53<F1>
<PER-SHARE-DIVIDEND> 0<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 19.87<F1>
<EXPENSE-RATIO> 1.80<F1>
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
<FN>
<F1>Class D only. All other data are fund level.
</FN>
</TABLE>
