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<PAGE> PAGE 11
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<PAGE> PAGE 13
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<PAGE> PAGE 16
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<PAGE> PAGE 21
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<PAGE> PAGE 22
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<PAGE> PAGE 23
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<PAGE> PAGE 25
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<PAGE> PAGE 26
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<PAGE> PAGE 27
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<PAGE> PAGE 29
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<PAGE> PAGE 30
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<PAGE> PAGE 31
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<PAGE> PAGE 32
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<PAGE> PAGE 33
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<PAGE> PAGE 34
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<PAGE> PAGE 35
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<PAGE> PAGE 36
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<PAGE> PAGE 37
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<PAGE> PAGE 38
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<PAGE> PAGE 39
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<PAGE> PAGE 40
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015 A000901 CHASE MANHATTAN BANK
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<PAGE> PAGE 41
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<PAGE> PAGE 42
062 A000900 N
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066 E000900 N
066 F000900 N
066 G000900 N
067 000900 N
068 A000900 N
068 B000900 Y
069 000900 N
070 A010900 Y
070 A020900 N
070 B010900 N
070 B020900 N
070 C010900 N
070 C020900 N
070 D010900 N
070 D020900 N
070 E010900 N
070 E020900 N
070 F010900 N
070 F020900 N
070 G010900 N
070 G020900 N
070 H010900 N
070 H020900 N
070 I010900 N
070 I020900 N
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070 J020900 N
<PAGE> PAGE 43
070 K010900 Y
070 K020900 Y
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070 L020900 Y
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<PAGE> PAGE 44
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008 A001001 J. & W. SELIGMAN & CO. INCORPORATED
008 B001001 A
008 C001001 801-15798
008 D011001 NEW YORK
008 D021001 NY
008 D031001 10017
015 A001001 STATE STREET BANK & TRUST CO.
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<PAGE> PAGE 45
015 E011001 X
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<PAGE> PAGE 46
048 I021000 0.000
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<PAGE> PAGE 47
070 D021000 N
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<PAGE> PAGE 48
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<PAGE> PAGE 49
076 001000 0.00
008 A001101 J. & W. SELIGMAN & CO. INCORPORATED
008 B001101 A
008 C001101 801-15798
008 D011101 NEW YORK
008 D021101 NY
008 D031101 10017
008 A001102 HENDERSON INVESTMENT MANAGEMENT LIMITED
008 B001102 S
008 C001102 801-55577
008 D011102 LONDON
008 D051102 ENGLAND
008 D061102 EC2M 2PA
015 A001101 CHASE MANHATTAN BANK
015 B001101 C
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<PAGE> PAGE 50
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052 001100 N
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<PAGE> PAGE 51
062 R001100 0.0
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<PAGE> PAGE 52
071 B001100 6475
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<PAGE> PAGE 53
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008 A001201 J. & W. SELIGMAN & CO. INCORPORATED
008 B001201 A
008 C001201 801-15798
008 D011201 NEW YORK
008 D021201 NY
008 D031201 10017
008 A001202 HENDERSON INVESTMENT MANAGEMENT LIMITED
008 B001202 S
008 C001202 801-55577
008 D011202 LONDON
008 D051202 ENGLAND
008 D061202 EC2M 2PA
015 A001201 CHASE MANHATTAN BANK
015 B001201 C
015 C011201 BROOKLYN
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015 C031201 11201
015 E011201 X
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<PAGE> PAGE 54
028 C041200 1966
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<PAGE> PAGE 55
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<PAGE> PAGE 56
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<PAGE> PAGE 57
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008 A001301 J. & W. SELIGMAN & CO. INCORPORATED
008 B001301 A
008 C001301 801-15798
008 D011301 NEW YORK
008 D021301 NY
008 D031301 10017
015 A001301 STATE STREET BANK & TRUST CO.
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<PAGE> PAGE 58
015 C011301 KANSAS CITY
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<PAGE> PAGE 59
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<PAGE> PAGE 60
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<PAGE> PAGE 61
072 L001300 2
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<PAGE> PAGE 62
074 V011300 9.28
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008 A001401 J. & W. SELIGMAN & CO. INCORPORATED
008 B001401 A
008 C001401 801-15798
008 D011401 NEW YORK
008 D021401 NY
008 D031401 10017
015 A001401 STATE STREET BANK & TRUST CO.
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015 C011401 KANSAS CITY
015 C021401 MO
015 C031401 64105
015 C041401 1307
015 E011401 X
028 A011400 316
028 A021400 0
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028 G011400 1217
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028 G041400 1505
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045 001400 Y
<PAGE> PAGE 63
046 001400 N
047 001400 Y
048 001400 0.000
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048 H011400 0
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048 I011400 0
048 I021400 0.000
048 J011400 0
048 J021400 0.000
048 K011400 1000000
048 K021400 0.800
049 001400 N
050 001400 N
051 001400 N
052 001400 N
053 A001400 Y
053 B001400 Y
053 C001400 Y
055 A001400 Y
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056 001400 Y
057 001400 N
062 A001400 N
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062 F001400 0.0
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<PAGE> PAGE 64
062 P001400 0.0
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066 A001400 Y
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066 F001400 N
066 G001400 N
067 001400 N
068 A001400 N
068 B001400 N
069 001400 N
070 A011400 Y
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070 B011400 Y
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070 C021400 N
070 D011400 N
070 D021400 N
070 E011400 N
070 E021400 N
070 F011400 N
070 F021400 N
070 G011400 N
070 G021400 N
070 H011400 N
070 H021400 N
070 I011400 N
070 I021400 N
070 J011400 Y
070 J021400 N
070 K011400 N
070 K021400 N
070 L011400 Y
070 L021400 N
070 M011400 Y
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070 O021400 N
070 P011400 Y
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<PAGE> PAGE 65
070 R021400 N
071 A001400 4533
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<PAGE> PAGE 66
074 J001400 0
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008 A001501 J. & W. SELIGMAN & CO. INCORPORATED
008 B001501 A
008 C001501 801-15798
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008 D031501 10017
015 A001501 STATE STREET BANK & CO.
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015 C031501 64105
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028 A011500 139
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<PAGE> PAGE 67
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045 001500 Y
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<PAGE> PAGE 68
057 001500 N
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062 J001500 0.0
062 K001500 0.0
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062 M001500 0.0
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062 P001500 0.0
062 Q001500 0.0
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066 A001500 Y
066 B001500 N
066 C001500 N
066 D001500 Y
066 E001500 N
066 F001500 N
066 G001500 N
067 001500 N
068 A001500 N
068 B001500 N
069 001500 N
070 A011500 Y
070 A021500 Y
070 B011500 N
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070 C011500 N
070 C021500 N
070 D011500 N
070 D021500 N
070 E011500 N
070 E021500 N
070 F011500 N
070 F021500 N
070 G011500 N
070 G021500 N
070 H011500 N
070 H021500 N
070 I011500 N
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<PAGE> PAGE 69
070 J021500 N
070 K011500 N
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071 A001500 3806
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<PAGE> PAGE 70
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SIGNATURE THOMAS ROSE
TITLE TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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<NAME> SELIGMAN BOND PORTFOLIO
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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<NAME> SELIGMAN CAPITAL PORTFOLIO
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
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<NUMBER> 02
<NAME> SELIGMAN CASH MANAGEMENT PORTFOLIO
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 03
<NAME> SELIGMAN COMMON STOCK PORTFOLIO
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
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<NAME> SELIGMAN FRONTIER PORTFOLIO
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 11
<NAME> SELIGMAN GLOBAL GROWTH PORTFOLIO
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 09
<NAME> SELIGMAN GLOBAL SMALLER COMPANIES PORTFOLIO
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 12
<NAME> SELIGMAN GLOBAL TECHNOLOGY PORTFOLIO
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 10
<NAME> SELIGMAN HIGH-YIELD BOND PORTFOLIO
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[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
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<NAME> SELIGMAN INCOME PORTFOLIO
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 06
<NAME> SELIGMAN INTERNATIONAL GROWTH PORTFOLIO
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
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<SERIES>
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<NAME> SELIGMAN INTERNATIONAL GROWTH PORTFOLIO
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
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<NAME> SELIGMAN LARGE-CAP VALUE PORTFOLIO
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<GROSS-ADVISORY-FEES> 43
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<GROSS-EXPENSE> 61
<AVERAGE-NET-ASSETS> 5367
<PER-SHARE-NAV-BEGIN> 9.66
<PER-SHARE-NII> 0.15
<PER-SHARE-GAIN-APPREC> (0.42)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (0.11)
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<PER-SHARE-NAV-END> 9.28
<EXPENSE-RATIO> .80
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
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<SERIES>
<NUMBER> 15
<NAME> SELIGMAN LARGE-CAP GROWTH PORTFOLIO
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<PERIOD-START> APR-30-1999
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<INVESTMENTS-AT-VALUE> 3212
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<EXPENSES-NET> (11)
<NET-INVESTMENT-INCOME> (1)
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<NUMBER-OF-SHARES-REDEEMED> (15)
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<NET-CHANGE-IN-ASSETS> 3125
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<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 11
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 23
<AVERAGE-NET-ASSETS> 2382
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> 0
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</TABLE>
Report of Independent Auditors
To the Shareholders and Board of Directors of
Seligman Portfolios, Inc.
In planning and performing our audit of the financial statements of Seligman
Portfolios, Inc. (comprising, respectively, Seligman Bond Portfolio, Seligman
Capital Portfolio, Seligman Cash Management Portfolio, Seligman Common Stock
Portfolio, Seligman Communications and Information Portfolio, Seligman
Frontier Portfolio, Seligman Global Growth Portfolio, Seligman Global Smaller
Companies Portfolio, Seligman Global Technology Portfolio, Seligman
International Growth Portfolio, Seligman High-Yield Bond Portfolio, Seligman
Income Portfolio, Seligman Large Cap Value Portfolio, Seligman Large Cap
Growth Portfolio, and Seligman Small-Cap Value Portfolio) for the year ended
December 31, 1999, we considered its internal control, including control
activities for safeguarding securities, 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, and not to provide assurance on
internal control.
The management of Seligman Portfolios, Inc. 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 internal control. Generally, internal 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 any internal control, misstatements due to
errors or fraud may occur and not be detected. Also, projections of any
evaluation of internal control to future periods are subject to the risk that
internal control may become inadequate because of changes in conditions, or
that the degree of compliance with the policies or procedures 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 one or
more of the specific internal control components does not reduce to a
relatively low level the risk that errors or fraud 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 control activities for safeguarding securities,
and its operations that we consider to be material weaknesses as defined above
at December 31, 1999.
This report is intended solely for the information and use of the board of
directors and management of Seligman Portfolios, Inc. and the Securities and
Exchange Commission and is not intended to be and should not be used by anyone
other than these specified parties.
ERNST & YOUNG LLP
February 7, 2000
