<PAGE> PAGE 1
000 A000000 06/30/98
000 C000000 100786
000 D000000 N
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001 A000000 SELIGMAN CAPITAL FUND, INC.
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008 A000002 DELETE
011 A000001 SELIGMAN FINANCIAL SERVICES, INC.
011 B000001 8-25845
011 C010001 NEW YORK
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011 C030001 10017
012 A000001 SELIGMAN DATA CORP
012 B000001 84-1895
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012 C020001 NY
012 C030001 10017
013 A000001 DELOITTE & TOUCHE LLP
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<PAGE> PAGE 2
013 B020001 NY
013 B030001 10281
014 A000001 SELIGMAN SERVICES, INC.
014 B000001 8-47717
015 A000001 INVESTORS FIDUCIARY TRUST COMPANY
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020 A000002 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
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020 C000002 41
020 A000003 MONTGOMERY SECURITIES
020 B000003 94-1701676
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020 A000004 MORGAN STANLEY & CO., INC.
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020 A000005 CREDIT SUISSE FIRST BOSTON CORPORATION
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020 A000009 GOLDMAN, SACHS & CO.
020 B000009 13-5108880
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020 C000010 15
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022 B000001 13-4941092
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<PAGE> PAGE 3
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<PAGE> PAGE 4
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<PAGE> PAGE 5
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<PAGE> PAGE 6
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<PAGE> PAGE 8
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SIGNATURE THOMAS ROSE
TITLE TREASURER
<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-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 271126
<INVESTMENTS-AT-VALUE> 345265
<RECEIVABLES> 252
<ASSETS-OTHER> 273
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 345790
<PAYABLE-FOR-SECURITIES> 6226
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5246
<TOTAL-LIABILITIES> 11472
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 191092
<SHARES-COMMON-STOCK> 14878<F1>
<SHARES-COMMON-PRIOR> 16262<F1>
<ACCUMULATED-NII-CURRENT> (691)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 69778
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 74139
<NET-ASSETS> 296510<F1>
<DIVIDEND-INCOME> 626<F1>
<INTEREST-INCOME> 378<F1>
<OTHER-INCOME> 0<F1>
<EXPENSES-NET> (1406)<F1>
<NET-INVESTMENT-INCOME> (402)<F1>
<REALIZED-GAINS-CURRENT> 58284
<APPREC-INCREASE-CURRENT> (14008)
<NET-CHANGE-FROM-OPS> 43692
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 7303<F1>
<NUMBER-OF-SHARES-REDEEMED> (8687)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 15579
<ACCUMULATED-NII-PRIOR> (107)
<ACCUMULATED-GAINS-PRIOR> 11494
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 697<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (1407)<F1>
<AVERAGE-NET-ASSETS> 293886<F1>
<PER-SHARE-NAV-BEGIN> 17.48<F1>
<PER-SHARE-NII> (0.03)<F1>
<PER-SHARE-GAIN-APPREC> 2.48<F1>
<PER-SHARE-DIVIDEND> 0<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 19.93<F1>
<EXPENSE-RATIO> .96<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A only. All other data are fund level.
</FN>
</TABLE>
<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-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 271126
<INVESTMENTS-AT-VALUE> 345265
<RECEIVABLES> 252
<ASSETS-OTHER> 273
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 345790
<PAYABLE-FOR-SECURITIES> 6226
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5246
<TOTAL-LIABILITIES> 11472
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 191092
<SHARES-COMMON-STOCK> 608<F1>
<SHARES-COMMON-PRIOR> 519<F1>
<ACCUMULATED-NII-CURRENT> (691)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 69778
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 74139
<NET-ASSETS> 11214<F1>
<DIVIDEND-INCOME> 20<F1>
<INTEREST-INCOME> 13<F1>
<OTHER-INCOME> 0<F1>
<EXPENSES-NET> (82)<F1>
<NET-INVESTMENT-INCOME> (49)<F1>
<REALIZED-GAINS-CURRENT> 58284
<APPREC-INCREASE-CURRENT> (14008)
<NET-CHANGE-FROM-OPS> 43692
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 259<F1>
<NUMBER-OF-SHARES-REDEEMED> (170)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 15579
<ACCUMULATED-NII-PRIOR> (107)
<ACCUMULATED-GAINS-PRIOR> 11494
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 23<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (82)<F1>
<AVERAGE-NET-ASSETS> 9609<F1>
<PER-SHARE-NAV-BEGIN> 16.24<F1>
<PER-SHARE-NII> (0.09)<F1>
<PER-SHARE-GAIN-APPREC> 2.30<F1>
<PER-SHARE-DIVIDEND> 0<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 18.45<F1>
<EXPENSE-RATIO> 1.72<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B only. All other data are fund level.
</FN>
</TABLE>
<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-31-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 271126
<INVESTMENTS-AT-VALUE> 345265
<RECEIVABLES> 252
<ASSETS-OTHER> 273
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 345791
<PAYABLE-FOR-SECURITIES> 6226
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5246
<TOTAL-LIABILITIES> 11472
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 191092
<SHARES-COMMON-STOCK> 1441<F1>
<SHARES-COMMON-PRIOR> 1606<F1>
<ACCUMULATED-NII-CURRENT> (691)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 69778
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 74139
<NET-ASSETS> 26594<F1>
<DIVIDEND-INCOME> 56<F1>
<INTEREST-INCOME> 32<F1>
<OTHER-INCOME> 0<F1>
<EXPENSES-NET> (221)<F1>
<NET-INVESTMENT-INCOME> (133)<F1>
<REALIZED-GAINS-CURRENT> 58284
<APPREC-INCREASE-CURRENT> (14008)
<NET-CHANGE-FROM-OPS> 43692
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 192<F1>
<NUMBER-OF-SHARES-REDEEMED> (357)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 15579
<ACCUMULATED-NII-PRIOR> (107)
<ACCUMULATED-GAINS-PRIOR> 11494
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 61<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (221)<F1>
<AVERAGE-NET-ASSETS> 25871<F1>
<PER-SHARE-NAV-BEGIN> 16.25<F1>
<PER-SHARE-NII> (0.09)<F1>
<PER-SHARE-GAIN-APPREC> 2.30<F1>
<PER-SHARE-DIVIDEND> 0<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 18.46<F1>
<EXPENSE-RATIO> 1.72<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class D only. All other data are fund level.
</FN>
</TABLE>
