<PAGE> PAGE 1
000 B000000 12/31/99
000 C000000 1086890
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 SELIGMAN NEW TECHNOLOGIES FUND, INC.
001 B000000 811-09353
001 C000000 2128501273
002 A000000 100 PARK AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10017
003 000000 Y
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 CROP
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 STATE STREET BANK & TRUST CO.
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 54
019 C000000 JWSELIGMAN
020 A000001 INSTINET CORPORATION
020 B000001 13-3443395
020 C000001 189
020 A000002 GOLDMAN SACHS & CO.
020 B000002 13-5108880
020 C000002 81
020 A000003 CIBC WORLD MARKETS CORP.
020 B000003 13-2798343
020 C000003 36
020 A000004 MERRILL, LYNCH, PIERCE, FENNER & SMITH INC
020 B000004 13-5674085
020 C000004 18
020 A000005 ESI SECURITIES COMPANY
020 B000005 13-3747159
020 C000005 11
020 A000006 MORGAN STANLEY, DEAN WITTER AND CO.
020 B000006 13-2655998
020 C000006 10
020 A000007 ALLEN AND CO.
020 B000007 13-6176976
020 C000007 10
020 A000008 FACTSET DATA SYSTEMS INC.
020 B000008 13-2953224
020 C000008 9
020 A000009 DONALDSON, LUFKIN, JEANRETTE & CO.
020 B000009 13-2741729
020 C000009 8
020 A000010 LEHMAN BROTHERS, INC.
020 B000010 13-2518466
020 C000010 8
021 000000 464
022 A000001 STATE STREET BANK & TRUST CO.-GRAND CAYMAN
022 B000001 04-1867445
022 C000001 9672400
022 D000001 0
022 A000002 CHASE MANHATTAN BANK
022 B000002 13-3112953
<PAGE> PAGE 3
022 C000002 5094000
022 D000002 0
022 A000003 MORGAN STANLEY, DEAN WITTER & CO.
022 B000003 13-2655998
022 C000003 4933073
022 D000003 16524
022 A000004 UBS WARBURG DILLON READ
022 B000004 13-3873456
022 C000004 3248416
022 D000004 5317
022 A000005 BANK OF MONTREAL-TORONTO
022 B000005 13-4941092
022 C000005 163500
022 D000005 0
022 A000006 CIBC WORLD MARKETS CORP.
022 B000006 13-2798343
022 C000006 154000
022 D000006 0
022 A000007 CREDIT SUISSE FIRST BOSTON CORPORATION
022 B000007 13-5659485
022 C000007 58335
022 D000007 49600
022 A000008 CREDIT COMMUNAL DE BELGIQUE-GRAND CAYMAN
022 B000008 13-3915825
022 C000008 88000
022 D000008 0
022 A000009 MERRILL, LYNCH, PIERCE, FENNER, & SMITH INC.
022 B000009 13-5674085
022 C000009 31483
022 D000009 37102
022 A000010 HSBC BANK-GRAND CAYMAN
022 B000010 13-2774276
022 C000010 67000
022 D000010 0
023 C000000 24343816
023 D000000 23900630
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 N
028 A010000 0
028 A020000 0
028 A030000 0
028 A040000 0
028 B010000 0
028 B020000 0
028 B030000 0
028 B040000 0
028 C010000 0
028 C020000 0
028 C030000 0
028 C040000 0
028 D010000 0
028 D020000 0
028 D030000 0
028 D040000 0
028 E010000 0
028 E020000 0
028 E030000 0
028 E040000 0
028 F010000 0
028 F020000 0
028 F030000 0
028 F040000 0
028 G010000 0
028 G020000 0
028 G030000 0
028 G040000 0
028 H000000 0
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
035 000000 0
036 B000000 0
038 000000 0
042 A000000 0
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
<PAGE> PAGE 5
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 2.000
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
048 F020000 0.000
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 N
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
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 Y
055 A000000 Y
055 B000000 N
056 000000 Y
<PAGE> PAGE 6
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 N
060 B000000 N
061 000000 10000
062 A000000 N
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
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 Y
070 B010000 N
070 B020000 N
070 C010000 N
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 N
070 E020000 N
070 F010000 N
070 F020000 N
070 G010000 N
070 G020000 N
<PAGE> PAGE 7
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 N
070 K020000 N
070 L010000 Y
070 L020000 Y
070 M010000 Y
070 M020000 Y
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 N
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 936872
071 B000000 435207
071 C000000 387149
071 D000000 112
072 A000000 6
072 B000000 4894
072 C000000 165
072 D000000 0
072 E000000 0
072 F000000 5851
072 G000000 0
072 H000000 0
072 I000000 2103
072 J000000 0
072 K000000 17
072 L000000 71
072 M000000 18
072 N000000 5
072 O000000 1
072 P000000 0
072 Q000000 0
072 R000000 25
072 S000000 51
072 T000000 0
072 U000000 33
072 V000000 0
072 W000000 11
072 X000000 8186
072 Y000000 0
<PAGE> PAGE 8
072 Z000000 -3127
072AA000000 162962
072BB000000 19457
072CC010000 202944
072CC020000 0
072DD010000 0
072DD020000 0
072EE000000 33229
073 A010000 0.0000
073 A020000 0.0000
073 B000000 1.4270
073 C000000 0.0000
074 A000000 7809
074 B000000 0
074 C000000 56670
074 D000000 0
074 E000000 170687
074 F000000 676469
074 G000000 0
074 H000000 0
074 I000000 1134
074 J000000 0
074 K000000 0
074 L000000 7
074 M000000 60
074 N000000 912836
074 O000000 4901
074 P000000 1468
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 1180
074 S000000 0
074 T000000 905287
074 U010000 24247
074 U020000 0
074 V010000 37.34
074 V020000 0.00
074 W000000 0.0000
074 X000000 25360
074 Y000000 0
075 A000000 0
075 B000000 673927
076 000000 0.00
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
<PAGE> PAGE 9
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 N
077 P000000 N
077 Q010000 Y
077 Q020000 N
077 Q030000 N
078 000000 N
080 A000000 ICI MUTUAL INSURANCE COMPANY
080 C000000 22000
081 A000000 Y
081 B000000 57
082 A000000 Y
082 B000000 150
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
086 A010000 24247
086 A020000 595194
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
087 A010000 SELIGMAN NEW TECHNOLOGIES FUND, INC.
087 A020000 81634M105
087 A030000 XSTFX
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 N
SIGNATURE THOMAS G. ROSE
TITLE TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<NAME> SELIGMAN NEW TECHNOLOGIES FUND, INC.
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 5-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JUL-27-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 702016
<INVESTMENTS-AT-VALUE> 904960
<RECEIVABLES> 8
<ASSETS-OTHER> 7808
<OTHER-ITEMS-ASSETS> 60
<TOTAL-ASSETS> 912836
<PAYABLE-FOR-SECURITIES> 4901
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2648
<TOTAL-LIABILITIES> 7549
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 595194
<SHARES-COMMON-STOCK> 24247
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> (4)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 107153
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 202944
<NET-ASSETS> 905287
<DIVIDEND-INCOME> 165
<INTEREST-INCOME> 4894
<OTHER-INCOME> 0
<EXPENSES-NET> (8186)
<NET-INVESTMENT-INCOME> (3127)
<REALIZED-GAINS-CURRENT> 143505
<APPREC-INCREASE-CURRENT> 202944
<NET-CHANGE-FROM-OPS> 343322
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (33229)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 23274
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 973
<NET-CHANGE-IN-ASSETS> 905287
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5851
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 8186
<AVERAGE-NET-ASSETS> 680163
<PER-SHARE-NAV-BEGIN> 24.25
<PER-SHARE-NII> (0.13)
<PER-SHARE-GAIN-APPREC> 14.65
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.43)
<PER-SHARE-NAV-END> 37.34
<EXPENSE-RATIO> 2.78
</TABLE>
INDEPENDENT AUDITORS' REPORT
Board of Directors
Seligman New Technologies Fund, Inc.
In planning and performing our audit of the financial statements of Seligman New
Technologies Fund, Inc. (the "Fund") for the period from July 27, 1999 to
December 31, 1999 (on which we have issued our report dated February 11, 2000),
we considered its internal control, including control activities for
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, and not to provide assurance on the Fund's
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 any internal control, misstatements due to
error 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
the internal control may become inadequate because of changes in conditions, or
that the degree of compliance with policies and procedures may deteriorate.
Our consideration of the Fund's internal control would not necessarily disclose
all matters in the 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 internal control components does not reduce to a relatively low
level the risk that misstatements caused by error 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 the
Fund's internal control and its operation, including controls for safeguarding
securities, that we consider to be material weaknesses as defined above as of
December 31, 1999.
This report is intended solely for the information and use of management, and
the Board of Directors of Seligman New Technologies Fund, 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.
Deloitte & Touche LLP
New York, New York
February 11, 2000
<PAGE>
