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<PAGE> PAGE 12
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<PAGE> PAGE 19
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070 M010400 Y
070 M020400 Y
070 N010400 Y
070 N020400 N
070 O010400 Y
070 O020400 N
070 P010400 Y
070 P020400 N
070 Q010400 N
070 Q020400 N
070 R010400 Y
070 R020400 N
<PAGE> PAGE 21
071 A000400 145136
071 B000400 151477
071 C000400 182972
071 D000400 79
072 A000400 12
072 B000400 263
072 C000400 1837
072 D000400 0
072 E000400 -263
072 F000400 1903
072 G000400 0
072 H000400 0
072 I000400 474
072 J000400 140
072 K000400 50
072 L000400 61
072 M000400 10
072 N000400 67
072 O000400 1
072 P000400 0
072 Q000400 0
072 R000400 44
072 S000400 10
072 T000400 1045
072 U000400 0
072 V000400 0
072 W000400 7
072 X000400 3812
072 Y000400 0
072 Z000400 -1975
072AA000400 24680
072BB000400 15230
072CC010400 15679
072CC020400 0
072DD010400 0
072DD020400 0
072EE000400 0
073 A010400 0.0000
073 A020400 0.0000
073 B000400 0.0000
073 C000400 0.0000
074 A000400 7391
074 B000400 0
074 C000400 0
074 D000400 0
074 E000400 0
074 F000400 185548
074 G000400 0
074 H000400 0
074 I000400 0
074 J000400 4886
<PAGE> PAGE 22
074 K000400 106
074 L000400 857
074 M000400 210
074 N000400 198998
074 O000400 5160
074 P000400 190
074 Q000400 0
074 R010400 0
074 R020400 0
074 R030400 0
074 R040400 977
074 S000400 0
074 T000400 192671
074 U010400 11847
074 U020400 7093
074 V010400 9.20
074 V020400 9.06
074 W000400 0.0000
074 X000400 11138
074 Y000400 0
075 A000400 0
075 B000400 188537
076 000400 0.00
028 A010500 5845
028 A020500 0
028 A030500 0
028 A040500 2984
028 B010500 15027
028 B020500 0
028 B030500 0
028 B040500 7324
028 C010500 14394
028 C020500 0
028 C030500 0
028 C040500 6650
028 D010500 10704
028 D020500 0
028 D030500 0
028 D040500 5966
028 E010500 8768
028 E020500 0
028 E030500 0
028 E040500 5538
028 F010500 6634
028 F020500 0
028 F030500 0
028 F040500 6687
028 G010500 61372
028 G020500 0
028 G030500 0
028 G040500 35149
<PAGE> PAGE 23
028 H000500 7647
029 000500 Y
030 A000500 622
030 B000500 4.75
030 C000500 0.00
031 A000500 70
031 B000500 0
032 000500 548
033 000500 4
034 000500 Y
035 000500 108
036 A000500 N
036 B000500 0
042 A000500 0
042 B000500 0
042 C000500 29
042 D000500 71
042 E000500 0
042 F000500 0
042 G000500 0
042 H000500 0
043 000500 590
044 000500 0
045 000500 Y
046 000500 Y
047 000500 Y
048 000500 1.250
048 A010500 0
048 A020500 0.000
048 B010500 0
048 B020500 0.000
048 C010500 0
048 C020500 0.000
048 D010500 0
048 D020500 0.000
048 E010500 0
048 E020500 0.000
048 F010500 0
048 F020500 0.000
048 G010500 0
048 G020500 0.000
048 H010500 0
048 H020500 0.000
048 I010500 0
048 I020500 0.000
048 J010500 0
048 J020500 0.000
048 K010500 0
048 K020500 0.000
049 000500 N
050 000500 N
<PAGE> PAGE 24
051 000500 N
052 000500 N
053 A000500 N
055 A000500 N
055 B000500 N
056 000500 Y
057 000500 N
063 A000500 0
063 B000500 0.0
066 A000500 Y
066 B000500 N
066 C000500 Y
066 D000500 N
066 E000500 N
066 F000500 N
066 G000500 N
067 000500 N
068 A000500 N
068 B000500 Y
069 000500 N
070 A010500 Y
070 A020500 N
070 B010500 N
070 B020500 N
070 C010500 N
070 C020500 N
070 D010500 N
070 D020500 N
070 E010500 N
070 E020500 N
070 F010500 N
070 F020500 N
070 G010500 N
070 G020500 N
070 H010500 N
070 H020500 N
070 I010500 N
070 I020500 N
070 J010500 Y
070 J020500 Y
070 K010500 Y
070 K020500 Y
070 L010500 Y
070 L020500 Y
070 M010500 Y
070 M020500 Y
070 N010500 Y
070 N020500 N
070 O010500 Y
070 O020500 N
070 P010500 Y
<PAGE> PAGE 25
070 P020500 N
070 Q010500 N
070 Q020500 N
070 R010500 Y
070 R020500 N
071 A000500 112355
071 B000500 64788
071 C000500 77044
071 D000500 84
072 A000500 12
072 B000500 417
072 C000500 1104
072 D000500 0
072 E000500 -317
072 F000500 1110
072 G000500 0
072 H000500 0
072 I000500 270
072 J000500 143
072 K000500 27
072 L000500 75
072 M000500 8
072 N000500 117
072 O000500 1
072 P000500 0
072 Q000500 0
072 R000500 48
072 S000500 10
072 T000500 590
072 U000500 0
072 V000500 0
072 W000500 4
072 X000500 2403
072 Y000500 0
072 Z000500 -1199
072AA000500 8207
072BB000500 10919
072CC010500 682
072CC020500 0
072DD010500 0
072DD020500 0
072EE000500 0
073 A010500 0.0000
073 A020500 0.0000
073 B000500 0.0000
073 C000500 0.0000
074 A000500 14791
074 B000500 0
074 C000500 0
074 D000500 0
074 E000500 0
<PAGE> PAGE 26
074 F000500 85995
074 G000500 0
074 H000500 0
074 I000500 0
074 J000500 4482
074 K000500 90
074 L000500 1313
074 M000500 8
074 N000500 106679
074 O000500 1520
074 P000500 137
074 Q000500 0
074 R010500 0
074 R020500 0
074 R030500 0
074 R040500 883
074 S000500 0
074 T000500 104139
074 U010500 6002
074 U020500 4302
074 V010500 7.34
074 V020500 7.27
074 W000500 0.0000
074 X000500 9064
074 Y000500 0
075 A000500 0
075 B000500 86673
076 000500 0.00
SIGNATURE THOMAS G. ROSE
TITLE TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER>011
<NAME> SELIGMAN HENDERSON INTERNATIONAL FUND CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 80690
<INVESTMENTS-AT-VALUE> 90160
<RECEIVABLES> 2438
<ASSETS-OTHER> 1706
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 94304
<PAYABLE-FOR-SECURITIES> 405
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 465
<TOTAL-LIABILITIES> 870
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 79542
<SHARES-COMMON-STOCK> 2572<F1>
<SHARES-COMMON-PRIOR> 2970<F1>
<ACCUMULATED-NII-CURRENT> (12)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 4298
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 9606
<NET-ASSETS> 46107<F1>
<DIVIDEND-INCOME> 715<F1>
<INTEREST-INCOME> 48<F1>
<OTHER-INCOME> (177)<F1>
<EXPENSES-NET> (881)<F1>
<NET-INVESTMENT-INCOME> (295)<F1>
<REALIZED-GAINS-CURRENT> 6612
<APPREC-INCREASE-CURRENT> 3674
<NET-CHANGE-FROM-OPS> 9295
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (2600)<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2794<F1>
<NUMBER-OF-SHARES-REDEEMED> (3304)<F1>
<SHARES-REINVESTED> 112<F1>
<NET-CHANGE-IN-ASSETS> (8324)
<ACCUMULATED-NII-PRIOR> (11)
<ACCUMULATED-GAINS-PRIOR> 3944
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 493<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 882<F1>
<AVERAGE-NET-ASSETS> 49276<F1>
<PER-SHARE-NAV-BEGIN> 17.17<F1>
<PER-SHARE-NII> (.04)<F1>
<PER-SHARE-GAIN-APPREC> 1.68<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (.89)<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 17.92<F1>
<EXPENSE-RATIO> 1.78<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>012
<NAME> SELIGMAN HENDERSON INTERNATIONAL FUND CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 80690
<INVESTMENTS-AT-VALUE> 90160
<RECEIVABLES> 2438
<ASSETS-OTHER> 1706
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 94304
<PAYABLE-FOR-SECURITIES> 405
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 465
<TOTAL-LIABILITIES> 870
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 79542
<SHARES-COMMON-STOCK> 367<F1>
<SHARES-COMMON-PRIOR> 170<F1>
<ACCUMULATED-NII-CURRENT> (12)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 4298
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 9606
<NET-ASSETS> 6350<F1>
<DIVIDEND-INCOME> 74<F1>
<INTEREST-INCOME> 2<F1>
<OTHER-INCOME> (17)<F1>
<EXPENSES-NET> (126)<F1>
<NET-INVESTMENT-INCOME> (67)<F1>
<REALIZED-GAINS-CURRENT> 6612
<APPREC-INCREASE-CURRENT> 3674
<NET-CHANGE-FROM-OPS> 9295
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (155)<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 249<F1>
<NUMBER-OF-SHARES-REDEEMED> (61)<F1>
<SHARES-REINVESTED> 9<F1>
<NET-CHANGE-IN-ASSETS> (8324)
<ACCUMULATED-NII-PRIOR> (11)
<ACCUMULATED-GAINS-PRIOR> 3944
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 49<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 126<F1>
<AVERAGE-NET-ASSETS> 4890<F1>
<PER-SHARE-NAV-BEGIN> 16.74<F1>
<PER-SHARE-NII> (.18)<F1>
<PER-SHARE-GAIN-APPREC> 1.63<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (.89)<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 17.30<F1>
<EXPENSE-RATIO> 2.58<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>014
<NAME> SELIGMAN HENDERSON INTERNATIONAL FUND CLASS D
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 80690
<INVESTMENTS-AT-VALUE> 90160
<RECEIVABLES> 2438
<ASSETS-OTHER> 1706
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 94304
<PAYABLE-FOR-SECURITIES> 405
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 465
<TOTAL-LIABILITIES> 870
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 79542
<SHARES-COMMON-STOCK> 2368<F1>
<SHARES-COMMON-PRIOR> 2863<F1>
<ACCUMULATED-NII-CURRENT> (12)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 4298
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 9606
<NET-ASSETS> 40977<F1>
<DIVIDEND-INCOME> 645<F1>
<INTEREST-INCOME> 54<F1>
<OTHER-INCOME> (162)<F1>
<EXPENSES-NET> (1166)<F1>
<NET-INVESTMENT-INCOME> (629)<F1>
<REALIZED-GAINS-CURRENT> 6612
<APPREC-INCREASE-CURRENT> 3674
<NET-CHANGE-FROM-OPS> 9295
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (2513)<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1406<F1>
<NUMBER-OF-SHARES-REDEEMED> (2039)<F1>
<SHARES-REINVESTED> 138<F1>
<NET-CHANGE-IN-ASSETS> (8324)
<ACCUMULATED-NII-PRIOR> (11)
<ACCUMULATED-GAINS-PRIOR> 3944
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 451<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1166<F1>
<AVERAGE-NET-ASSETS> 45158<F1>
<PER-SHARE-NAV-BEGIN> 16.74<F1>
<PER-SHARE-NII> (.18)<F1>
<PER-SHARE-GAIN-APPREC> 1.63<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (.89)<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 17.30<F1>
<EXPENSE-RATIO> 2.58<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class D only. All other data are fund level.
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER>021
<NAME> SELIGMAN HENDERSON GLOBAL SMALLER COS FUND CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 976025
<INVESTMENTS-AT-VALUE> 1035350
<RECEIVABLES> 12087
<ASSETS-OTHER> 22652
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1070089
<PAYABLE-FOR-SECURITIES> 11319
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 6148
<TOTAL-LIABILITIES> 17467
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 955729
<SHARES-COMMON-STOCK> 27801<F1>
<SHARES-COMMON-PRIOR> 23142<F1>
<ACCUMULATED-NII-CURRENT> (10)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 36841
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 60062
<NET-ASSETS> 434397<F1>
<DIVIDEND-INCOME> 6189<F1>
<INTEREST-INCOME> 767<F1>
<OTHER-INCOME> (213)<F1>
<EXPENSES-NET> (6866)<F1>
<NET-INVESTMENT-INCOME> (123)<F1>
<REALIZED-GAINS-CURRENT> 42083
<APPREC-INCREASE-CURRENT> 31357
<NET-CHANGE-FROM-OPS> 69062
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (16938)<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 13277<F1>
<NUMBER-OF-SHARES-REDEEMED> (9687)<F1>
<SHARES-REINVESTED> 1069<F1>
<NET-CHANGE-IN-ASSETS> 312818
<ACCUMULATED-NII-PRIOR> (7)
<ACCUMULATED-GAINS-PRIOR> 35628
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 4092<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 6866<F1>
<AVERAGE-NET-ASSETS> 409454<F1>
<PER-SHARE-NAV-BEGIN> 15.14<F1>
<PER-SHARE-NII> 0<F1>
<PER-SHARE-GAIN-APPREC> 1.21<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (.73)<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 15.62<F1>
<EXPENSE-RATIO> 1.67<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>022
<NAME> SELIGMAN HENDERSON GLOBAL SMALLER COS FUND CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 976025
<INVESTMENTS-AT-VALUE> 1035350
<RECEIVABLES> 12087
<ASSETS-OTHER> 22652
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1070089
<PAYABLE-FOR-SECURITIES> 11319
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 6148
<TOTAL-LIABILITIES> 17467
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 955729
<SHARES-COMMON-STOCK> 16468<F1>
<SHARES-COMMON-PRIOR> 7065<F1>
<ACCUMULATED-NII-CURRENT> (10)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 36841
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 60062
<NET-ASSETS> 247600<F1>
<DIVIDEND-INCOME> 3037<F1>
<INTEREST-INCOME> 193<F1>
<OTHER-INCOME> (99)<F1>
<EXPENSES-NET> (4628)<F1>
<NET-INVESTMENT-INCOME> (1497)<F1>
<REALIZED-GAINS-CURRENT> 42083
<APPREC-INCREASE-CURRENT> 31357
<NET-CHANGE-FROM-OPS> 69062
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (5227)<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 11585<F1>
<NUMBER-OF-SHARES-REDEEMED> (2518)<F1>
<SHARES-REINVESTED> 336<F1>
<NET-CHANGE-IN-ASSETS> 312818
<ACCUMULATED-NII-PRIOR> (7)
<ACCUMULATED-GAINS-PRIOR> 35628
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1903<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4628<F1>
<AVERAGE-NET-ASSETS> 189970<F1>
<PER-SHARE-NAV-BEGIN> 14.72<F1>
<PER-SHARE-NII> (.11)<F1>
<PER-SHARE-GAIN-APPREC> 1.16<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (.73)<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 15.04<F1>
<EXPENSE-RATIO> 2.43<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>024
<NAME> SELIGMAN HENDERSON GLOBAL SMALLER COS FUND CLASS D
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 976025
<INVESTMENTS-AT-VALUE> 1035350
<RECEIVABLES> 12087
<ASSETS-OTHER> 22652
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1070089
<PAYABLE-FOR-SECURITIES> 11319
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 6148
<TOTAL-LIABILITIES> 17467
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 955729
<SHARES-COMMON-STOCK> 24624<F1>
<SHARES-COMMON-PRIOR> 19400<F1>
<ACCUMULATED-NII-CURRENT> (10)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 36841
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 60062
<NET-ASSETS> 370625<F1>
<DIVIDEND-INCOME> 5298<F1>
<INTEREST-INCOME> 645<F1>
<OTHER-INCOME> (182)<F1>
<EXPENSES-NET> (8519)<F1>
<NET-INVESTMENT-INCOME> (2758)<F1>
<REALIZED-GAINS-CURRENT> 42083
<APPREC-INCREASE-CURRENT> 31357
<NET-CHANGE-FROM-OPS> 69062
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (14329)<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10460<F1>
<NUMBER-OF-SHARES-REDEEMED> (6172)<F1>
<SHARES-REINVESTED> 936<F1>
<NET-CHANGE-IN-ASSETS> 312818
<ACCUMULATED-NII-PRIOR> (7)
<ACCUMULATED-GAINS-PRIOR> 35628
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3499<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 8519<F1>
<AVERAGE-NET-ASSETS> 349980<F1>
<PER-SHARE-NAV-BEGIN> 14.72<F1>
<PER-SHARE-NII> (.11)<F1>
<PER-SHARE-GAIN-APPREC> 1.17<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (.73)<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 15.05<F1>
<EXPENSE-RATIO> 2.43<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class D only. All other data are fund level.
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER>031
<NAME> SELIGMAN HENDERSON GLOBAL TECHNOLOGY FUND CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 742711
<INVESTMENTS-AT-VALUE> 842104
<RECEIVABLES> 7352
<ASSETS-OTHER> 35875
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 885331
<PAYABLE-FOR-SECURITIES> 11540
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4606
<TOTAL-LIABILITIES> 16146
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 639593
<SHARES-COMMON-STOCK> 38526<F1>
<SHARES-COMMON-PRIOR> 44189<F1>
<ACCUMULATED-NII-CURRENT> (6)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 130196
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 99402
<NET-ASSETS> 583257<F1>
<DIVIDEND-INCOME> 1925<F1>
<INTEREST-INCOME> 1391<F1>
<OTHER-INCOME> (599)<F1>
<EXPENSES-NET> (9687)<F1>
<NET-INVESTMENT-INCOME> (6970)<F1>
<REALIZED-GAINS-CURRENT> 158948
<APPREC-INCREASE-CURRENT> 81380
<NET-CHANGE-FROM-OPS> 228138
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 13304<F1>
<NUMBER-OF-SHARES-REDEEMED> (18967)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 153075
<ACCUMULATED-NII-PRIOR> (4)
<ACCUMULATED-GAINS-PRIOR> (16564)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5811<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 9687<F1>
<AVERAGE-NET-ASSETS> 581193<F1>
<PER-SHARE-NAV-BEGIN> 11.31<F1>
<PER-SHARE-NII> (.16)<F1>
<PER-SHARE-GAIN-APPREC> 3.99<F1>
<PER-SHARE-DIVIDEND> 0<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 15.14<F1>
<EXPENSE-RATIO> 1.67<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>032
<NAME> SELIGMAN HENDERSON GLOBAL TECHNOLOGY FUND CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 742711
<INVESTMENTS-AT-VALUE> 842104
<RECEIVABLES> 7352
<ASSETS-OTHER> 35875
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 885331
<PAYABLE-FOR-SECURITIES> 11540
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4606
<TOTAL-LIABILITIES> 16146
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 639593
<SHARES-COMMON-STOCK> 3600<F1>
<SHARES-COMMON-PRIOR> 1698<F1>
<ACCUMULATED-NII-CURRENT> (6)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 130196
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 99402
<NET-ASSETS> 53046<F1>
<DIVIDEND-INCOME> 121<F1>
<INTEREST-INCOME> 91<F1>
<OTHER-INCOME> (39)<F1>
<EXPENSES-NET> (913)<F1>
<NET-INVESTMENT-INCOME> (740)<F1>
<REALIZED-GAINS-CURRENT> 158948
<APPREC-INCREASE-CURRENT> 81380
<NET-CHANGE-FROM-OPS> 228138
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2747<F1>
<NUMBER-OF-SHARES-REDEEMED> (845)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 153075
<ACCUMULATED-NII-PRIOR> (4)
<ACCUMULATED-GAINS-PRIOR> (16564)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 379<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 913<F1>
<AVERAGE-NET-ASSETS> 37771<F1>
<PER-SHARE-NAV-BEGIN> 11.09<F1>
<PER-SHARE-NII> (.26)<F1>
<PER-SHARE-GAIN-APPREC> 3.90<F1>
<PER-SHARE-DIVIDEND> 0<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.73<F1>
<EXPENSE-RATIO> 2.42<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>034
<NAME> SELIGMAN HENDERSON GLOBAL TECHNOLOGY FUND CLASS D
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 742711
<INVESTMENTS-AT-VALUE> 842104
<RECEIVABLES> 7352
<ASSETS-OTHER> 35875
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 885331
<PAYABLE-FOR-SECURITIES> 11540
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4606
<TOTAL-LIABILITIES> 16146
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 639593
<SHARES-COMMON-STOCK> 15805<F1>
<SHARES-COMMON-PRIOR> 17794<F1>
<ACCUMULATED-NII-CURRENT> (6)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 130196
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 99402
<NET-ASSETS> 232882<F1>
<DIVIDEND-INCOME> 760<F1>
<INTEREST-INCOME> 554<F1>
<OTHER-INCOME> (237)<F1>
<EXPENSES-NET> (5557)<F1>
<NET-INVESTMENT-INCOME> (4480)<F1>
<REALIZED-GAINS-CURRENT> 158948
<APPREC-INCREASE-CURRENT> 81380
<NET-CHANGE-FROM-OPS> 228138
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4072<F1>
<NUMBER-OF-SHARES-REDEEMED> (6061)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 153075
<ACCUMULATED-NII-PRIOR> (4)
<ACCUMULATED-GAINS-PRIOR> (16564)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2298<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5557<F1>
<AVERAGE-NET-ASSETS> 229878<F1>
<PER-SHARE-NAV-BEGIN> 11.09<F1>
<PER-SHARE-NII> (.26)<F1>
<PER-SHARE-GAIN-APPREC> 3.90<F1>
<PER-SHARE-DIVIDEND> 0<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.73<F1>
<EXPENSE-RATIO> 2.42<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class D only. All other data are fund level.
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER>041
<NAME> SELIGMAN HENDERSON GLOBAL GROWTH OPPORTUNITIES FUND CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 155631
<INVESTMENTS-AT-VALUE> 185548
<RECEIVABLES> 5849
<ASSETS-OTHER> 7601
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 198998
<PAYABLE-FOR-SECURITIES> 5160
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1167
<TOTAL-LIABILITIES> 6327
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 155568
<SHARES-COMMON-STOCK> 11847<F1>
<SHARES-COMMON-PRIOR> 13306<F1>
<ACCUMULATED-NII-CURRENT> (3)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 7210
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 29896
<NET-ASSETS> 109060<F1>
<DIVIDEND-INCOME> 1092<F1>
<INTEREST-INCOME> 153<F1>
<OTHER-INCOME> (156)<F1>
<EXPENSES-NET> (1912)<F1>
<NET-INVESTMENT-INCOME> (823)<F1>
<REALIZED-GAINS-CURRENT> 9450
<APPREC-INCREASE-CURRENT> 15679
<NET-CHANGE-FROM-OPS> 23154
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1925<F1>
<NUMBER-OF-SHARES-REDEEMED> (3384)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 22365
<ACCUMULATED-NII-PRIOR> (2)
<ACCUMULATED-GAINS-PRIOR> (266)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1128<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1912<F1>
<AVERAGE-NET-ASSETS> 112900<F1>
<PER-SHARE-NAV-BEGIN> 8.08<F1>
<PER-SHARE-NII> (.05)<F1>
<PER-SHARE-GAIN-APPREC> 1.17<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.20<F1>
<EXPENSE-RATIO> 1.69<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>042
<NAME> SELIGMAN HENDERSON GLOBAL GROWTH OPPORTUNITIES FUND CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 155631
<INVESTMENTS-AT-VALUE> 185548
<RECEIVABLES> 5849
<ASSETS-OTHER> 7601
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 198998
<PAYABLE-FOR-SECURITIES> 5160
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1167
<TOTAL-LIABILITIES> 6327
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 155568
<SHARES-COMMON-STOCK> 2130<F1>
<SHARES-COMMON-PRIOR> 1154<F1>
<ACCUMULATED-NII-CURRENT> (3)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 7210
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 29896
<NET-ASSETS> 19311<F1>
<DIVIDEND-INCOME> 146<F1>
<INTEREST-INCOME> 23<F1>
<OTHER-INCOME> (21)<F1>
<EXPENSES-NET> (375)<F1>
<NET-INVESTMENT-INCOME> (227)<F1>
<REALIZED-GAINS-CURRENT> 9450
<APPREC-INCREASE-CURRENT> 15679
<NET-CHANGE-FROM-OPS> 23154
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1234<F1>
<NUMBER-OF-SHARES-REDEEMED> (258)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 22365
<ACCUMULATED-NII-PRIOR> (2)
<ACCUMULATED-GAINS-PRIOR> (266)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 153<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 373<F1>
<AVERAGE-NET-ASSETS> 15273<F1>
<PER-SHARE-NAV-BEGIN> 8.02<F1>
<PER-SHARE-NII> (.12)<F1>
<PER-SHARE-GAIN-APPREC> 1.16<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.06<F1>
<EXPENSE-RATIO> 2.45<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>044
<NAME> SELIGMAN HENDERSON GLOBAL GROWTH OPPORTUNITIES FUND CLASS D
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 155631
<INVESTMENTS-AT-VALUE> 185548
<RECEIVABLES> 5849
<ASSETS-OTHER> 7601
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 198998
<PAYABLE-FOR-SECURITIES> 5160
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1167
<TOTAL-LIABILITIES> 6327
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 155568
<SHARES-COMMON-STOCK> 7093<F1>
<SHARES-COMMON-PRIOR> 6679<F1>
<ACCUMULATED-NII-CURRENT> (3)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 7210
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 29896
<NET-ASSETS> 64300<F1>
<DIVIDEND-INCOME> 599<F1>
<INTEREST-INCOME> 87<F1>
<OTHER-INCOME> (86)<F1>
<EXPENSES-NET> (1525)<F1>
<NET-INVESTMENT-INCOME> (925)<F1>
<REALIZED-GAINS-CURRENT> 9450
<APPREC-INCREASE-CURRENT> 15679
<NET-CHANGE-FROM-OPS> 23154
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2006<F1>
<NUMBER-OF-SHARES-REDEEMED> (1592)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 22365
<ACCUMULATED-NII-PRIOR> (2)
<ACCUMULATED-GAINS-PRIOR> (266)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 622<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1525<F1>
<AVERAGE-NET-ASSETS> 62165<F1>
<PER-SHARE-NAV-BEGIN> 8.02<F1>
<PER-SHARE-NII> (.12)<F1>
<PER-SHARE-GAIN-APPREC> 1.16<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.06<F1>
<EXPENSE-RATIO> 2.45<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class D only. All other data are fund level.
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER>051
<NAME> SELIGMAN HENDERSON EMERGING MARKETS GROWTH FUND CLASS A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 86156
<INVESTMENTS-AT-VALUE> 85995
<RECEIVABLES> 5885
<ASSETS-OTHER> 14799
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 106679
<PAYABLE-FOR-SECURITIES> 1520
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1020
<TOTAL-LIABILITIES> 2540
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 107986
<SHARES-COMMON-STOCK> 6002<F1>
<SHARES-COMMON-PRIOR> 2931<F1>
<ACCUMULATED-NII-CURRENT> (1)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3622)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (224)
<NET-ASSETS> 44061<F1>
<DIVIDEND-INCOME> 479<F1>
<INTEREST-INCOME> 181<F1>
<OTHER-INCOME> (138)<F1>
<EXPENSES-NET> (875)<F1>
<NET-INVESTMENT-INCOME> (353)<F1>
<REALIZED-GAINS-CURRENT> (2712)
<APPREC-INCREASE-CURRENT> 682
<NET-CHANGE-FROM-OPS> (3229)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 7051<F1>
<NUMBER-OF-SHARES-REDEEMED> (3980)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 60069
<ACCUMULATED-NII-PRIOR> (1)
<ACCUMULATED-GAINS-PRIOR> (910)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 482<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 875<F1>
<AVERAGE-NET-ASSETS> 38623<F1>
<PER-SHARE-NAV-BEGIN> 6.78<F1>
<PER-SHARE-NII> (.05)<F1>
<PER-SHARE-GAIN-APPREC> .61<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 7.34<F1>
<EXPENSE-RATIO> 2.27<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>052
<NAME> SELIGMAN HENDERSON EMERGING MARKETS GROWTH FUND CLASS B
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 86156
<INVESTMENTS-AT-VALUE> 85995
<RECEIVABLES> 5885
<ASSETS-OTHER> 14799
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 106679
<PAYABLE-FOR-SECURITIES> 1520
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1020
<TOTAL-LIABILITIES> 2540
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 107986
<SHARES-COMMON-STOCK> 3966<F1>
<SHARES-COMMON-PRIOR> 1559<F1>
<ACCUMULATED-NII-CURRENT> (1)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3622)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (224)
<NET-ASSETS> 28819<F1>
<DIVIDEND-INCOME> 285<F1>
<INTEREST-INCOME> 108<F1>
<OTHER-INCOME> (82)<F1>
<EXPENSES-NET> (698)<F1>
<NET-INVESTMENT-INCOME> (387)<F1>
<REALIZED-GAINS-CURRENT> (2712)
<APPREC-INCREASE-CURRENT> 682
<NET-CHANGE-FROM-OPS> (3229)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3004<F1>
<NUMBER-OF-SHARES-REDEEMED> (597)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 60069
<ACCUMULATED-NII-PRIOR> (1)
<ACCUMULATED-GAINS-PRIOR> (910)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 287<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 698<F1>
<AVERAGE-NET-ASSETS> 22958<F1>
<PER-SHARE-NAV-BEGIN> 6.76<F1>
<PER-SHARE-NII> (.11)<F1>
<PER-SHARE-GAIN-APPREC> .62<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 7.27<F1>
<EXPENSE-RATIO> 3.04<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>054
<NAME> SELIGMAN HENDERSON EMERGING MARKETS GROWTH FUND CLASS D
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 86156
<INVESTMENTS-AT-VALUE> 85995
<RECEIVABLES> 5885
<ASSETS-OTHER> 14799
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 106679
<PAYABLE-FOR-SECURITIES> 1520
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1020
<TOTAL-LIABILITIES> 2540
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 107986
<SHARES-COMMON-STOCK> 4302<F1>
<SHARES-COMMON-PRIOR> 2021<F1>
<ACCUMULATED-NII-CURRENT> (1)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3622)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (224)
<NET-ASSETS> 31259<F1>
<DIVIDEND-INCOME> 340<F1>
<INTEREST-INCOME> 128<F1>
<OTHER-INCOME> (97)<F1>
<EXPENSES-NET> (830)<F1>
<NET-INVESTMENT-INCOME> (459)<F1>
<REALIZED-GAINS-CURRENT> (2712)
<APPREC-INCREASE-CURRENT> 682
<NET-CHANGE-FROM-OPS> (3229)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4238<F1>
<NUMBER-OF-SHARES-REDEEMED> (1957)<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 60069
<ACCUMULATED-NII-PRIOR> (1)
<ACCUMULATED-GAINS-PRIOR> (910)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 341<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 830<F1>
<AVERAGE-NET-ASSETS> 27244<F1>
<PER-SHARE-NAV-BEGIN> 6.76<F1>
<PER-SHARE-NII> (.11)<F1>
<PER-SHARE-GAIN-APPREC> .62<F1>
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 7.27<F1>
<EXPENSE-RATIO> 3.04<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class D only. All other data are fund level.
</FN>
</TABLE>
INDEPENDENT AUDITORS' REPORT
The Board of Directors
Seligman Henderson Global Fund Series, Inc.
In planning and performing our audit of the financial statements of Seligman
Henderson Global Fund Series, Inc. (the "Fund") for the year ended October 31,
1997, we considered its internal control, including controls over safeguarding
securities, in order to determine our auditing procedures for the purpose of
expressing our opinion on the financial statements and to comply with the
requirements of Form N-SAR, not to provide assurance on internal control.
The management of the Fund is responsible for establishing and maintaining
internal control. In fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and related costs of
controls. Generally, controls that are relevant to an audit pertain to the
entity's objective of preparing financial statements for external purposes that
are fairly presented in conformity with generally accepted accounting
principles. Those controls include the safeguarding of assets against
unauthorized acquisition, use, or disposition.
Because of inherent limitations in internal control, errors or irregularities
may occur and may not be detected. Also, projection of any evaluation of
internal control to future periods is subject to the risk that it may be become
inadequate because of changes in conditions or that the effectiveness of the
design and operation may deteriorate.
Our consideration of internal control would not necessarily disclose all matters
in internal control that might be material weaknesses under standards
established by the American Institute of Certified Public Accountants. A
material weakness is a condition in which the design or operation of any
specific internal control component does not reduce to a relatively low level
the risk that errors or irregularities in amounts that would be material in
relation to the financial statements being audited may occur and not be detected
within a timely period by employees in the normal course of performing their
assigned functions. However, we noted no matters involving internal control,
including controls over safeguarding securities, that we consider to be material
weaknesses as defined above as of October 31, 1997.
This report is intended solely for the information and use of management and the
Securities and Exchange Commission.
December 5, 1997
/s/ Deloitte & Touche LLP
---------------------
Deloitte & Touche LLP
