CASH TRUST SERIES INC
NSAR-B, 1998-07-29
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<PAGE>      PAGE  1
000 B000000 05/31/98
000 C000000 0000852495
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 CASH TRUST SERIES, INC.
001 B000000 811-5843
001 C000000 4122888634
002 A000000 FEDERATED INVESTORS TOWER
002 B000000 PITTSBURGH
002 C000000 PA
002 D010000 15222
002 D020000 3779
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  4
007 C010100  1
007 C020100 GOVERNMENT CASH SERIES
007 C030100 N
007 C010200  2
007 C020200 MUNICIPAL CASH SERIES
007 C030200 N
007 C010300  3
007 C020300 PRIME CASH SERIES
007 C030300 N
007 C010400  4
007 C020400 TREASURY CASH SERIES
007 C030400 N
007 C010500  5
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
008 A00AA01 FEDERATED ADVISERS
008 B00AA01 A
008 C00AA01 801-34612
008 D01AA01 PITTSBURGH
008 D02AA01 PA
008 D03AA01 15222
008 D04AA01 3779
010 A00AA01 FEDERATED SERVICES COMPANY
010 C01AA01 PITTSBURGH
010 C02AA01 PA
<PAGE>      PAGE  2
010 C03AA01 15222
010 C04AA01 3779
011 A00AA01 FEDERATED SECURITIES CORP.
011 B00AA01 8-15561
011 C01AA01 PITTSBURGH
011 C02AA01 PA
011 C03AA01 15222
011 C04AA01 3779
012 A00AA01 FEDERATED SHAREHOLDER SERVICES COMPANY
012 B00AA01 84-1869
012 C01AA01 PITTSBURGH
012 C02AA01 PA
012 C03AA01 15222
012 C04AA01 3779
013 A00AA01 DELOITTE & TOUCHE LLP
013 B01AA01 PITTSBURGH
013 B02AA01 PA
013 B03AA01 15222
013 B04AA01 5401
018  00AA00 Y
019 A00AA00 N
019 B00AA00    0
020 C000001      0
020 C000002      0
020 C000003      0
020 C000004      0
020 C000005      0
020 C000006      0
020 C000007      0
020 C000008      0
020 C000009      0
020 C000010      0
021  000000        0
022 A000001 FUJI GOVERNMENT SECURITIES, INC.
022 B000001 36-2880742
022 C000001  32724810
022 D000001         0
022 A000002 GOLDMAN SACHS & CO.
022 B000002 13-5108880
022 C000002  31770904
022 D000002    179974
022 A000003 UBS SECURITIES, INC.
022 B000003 13-2932996
022 C000003  24894986
022 D000003         0
022 A000004 BANK OF TOKYO
022 C000004  22219957
022 D000004         0
022 A000005 HSBC SECURITIES, INC.
022 B000005 13-2650272
022 C000005  21925882
<PAGE>      PAGE  3
022 D000005      6499
022 A000006 PAINEWEBBER INC.
022 B000006 13-2638166
022 C000006  21638040
022 D000006         0
022 A000007 BEAR, STEARNS SECURITIES CORP.
022 B000007 13-3299429
022 C000007  20108051
022 D000007         0
022 A000008 ROYAL BANK OF CANADA
022 C000008  19597000
022 D000008         0
022 A000009 LEHMAN BROTHERS, INC.
022 B000009 13-2518466
022 C000009  12919085
022 D000009    221375
022 A000010 MORGAN STANLEY AND CO., INC.
022 B000010 13-2655998
022 C000010  12044808
022 D000010         0
023 C000000  476010713
023 D000000    2093218
024  00AA00 N
025 D00AA01       0
025 D00AA02       0
025 D00AA03       0
025 D00AA04       0
025 D00AA05       0
025 D00AA06       0
025 D00AA07       0
025 D00AA08       0
026 A000000 N
026 B000000 Y
026 C000000 Y
026 D000000 N
026 E000000 Y
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 Y
027  000000 Y
054 A00AA00 N
054 B00AA00 N
054 C00AA00 N
054 D00AA00 N
054 E00AA00 N
054 F00AA00 N
054 G00AA00 N
054 H00AA00 N
054 I00AA00 N
054 J00AA00 N
<PAGE>      PAGE  4
054 K00AA00 N
054 L00AA00 N
054 M00AA00 N
054 N00AA00 N
054 O00AA00 N
066 A00AA00 N
067  00AA00 N
068 A00AA00 N
068 B00AA00 N
069  00AA00 N
077 A000000 Y
077 B000000 Y
077 C000000 Y
077 D000000 N
077 E000000 N
077 F000000 N
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
080 A00AA00 ICI MUTUAL INSURANCE  COMPANY
080 B00AA00 TRAVELERS CASUALTY AND SURETY CO. OF AMERICA
080 C00AA00    85000
081 A00AA00 Y
081 B00AA00 285
082 A00AA00 N
082 B00AA00        0
083 A00AA00 N
083 B00AA00        0
084 A00AA00 N
084 B00AA00        0
085 A00AA00 Y
085 B00AA00 N
086 A010000      0
086 A020000      0
086 B010000      0
086 B020000      0
086 C010000      0
086 C020000      0
086 D010000      0
086 D020000      0
086 E010000      0
<PAGE>      PAGE  5
086 E020000      0
086 F010000      0
086 F020000      0
015 A000101 STATE STREET BANK AND TRUST COMPANY
015 B000101 C
015 C010101 BOSTON
015 C020101 MA
015 C030101 02266
015 C040101 8600
015 E010101 X
015 A000102 BANKERS TRUST CO.
015 B000102 S
015 C010102 NEW YORK
015 C020102 NY
015 C030102 10015
015 E010102 X
015 A000103 BANK OF NEW YORK
015 B000103 S
015 C010103 NEW YORK
015 C020103 NY
015 C030103 10006
015 E010103 X
015 A000104 THE CHASE MANHATTAN CORP.
015 B000104 S
015 C010104 NEW YORK
015 C020104 NY
015 C030104 10006
015 E010104 X
015 A000105 MORGAN GUARANTY BANK & TRUST CO.
015 B000105 S
015 C010105 NEW YORK
015 C020105 NY
015 C030105 10015
015 E010105 X
015 A000106 NATIONSBANK OF NORTH CAROLINA
015 B000106 S
015 C010106 CHARLOTTE
015 C020106 NC
015 C030106 28255
015 E010106 X
015 A000107 PNC BANK, NA
015 B000107 S
015 C010107 PITTSBURGH
015 C020107 PA
015 C030107 15265
015 E010107 X
028 A010100    340911
028 A020100      1866
028 A030100         0
028 A040100    275678
028 B010100    254043
<PAGE>      PAGE  6
028 B020100      1951
028 B030100         0
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028 C010100    149852
028 C020100      2158
028 C030100         0
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028 D020100      1807
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028 E010100    182221
028 E020100      1790
028 E030100         0
028 E040100    254448
028 F010100    168143
028 F020100      2636
028 F030100         0
028 F040100    150920
028 G010100   1328780
028 G020100     12208
028 G030100         0
028 G040100   1336518
028 H000100         0
029  000100 N
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030 B000100  0.00
030 C000100  0.00
031 A000100      0
031 B000100      0
032  000100      0
033  000100      0
034  000100 N
035  000100      0
036 B000100      0
037  000100 N
038  000100      0
039  000100 N
040  000100 Y
041  000100 Y
042 A000100   0
042 B000100   0
042 C000100 100
042 D000100   0
042 E000100   0
042 F000100   0
042 G000100   0
042 H000100   0
043  000100    564
044  000100      0
045  000100 Y
<PAGE>      PAGE  7
046  000100 N
047  000100 Y
048  000100  0.500
048 A010100        0
048 A020100 0.000
048 B010100        0
048 B020100 0.000
048 C010100        0
048 C020100 0.000
048 D010100        0
048 D020100 0.000
048 E010100        0
048 E020100 0.000
048 F010100        0
048 F020100 0.000
048 G010100        0
048 G020100 0.000
048 H010100        0
048 H020100 0.000
048 I010100        0
048 I020100 0.000
048 J010100        0
048 J020100 0.000
048 K010100        0
048 K020100 0.000
049  000100 N
050  000100 N
051  000100 N
052  000100 N
053 A000100 Y
053 B000100 Y
053 C000100 N
055 A000100 N
055 B000100 N
056  000100 N
057  000100 N
058 A000100 N
059  000100 Y
060 A000100 Y
060 B000100 Y
061  000100    10000
062 A000100 Y
062 B000100   4.0
062 C000100  43.0
062 D000100  56.9
062 E000100   0.0
062 F000100   0.0
062 G000100   0.0
062 H000100   0.0
062 I000100   0.0
062 J000100   0.0
<PAGE>      PAGE  8
062 K000100   0.0
062 L000100   0.0
062 M000100   0.0
062 N000100   0.0
062 O000100   0.0
062 P000100   0.0
062 Q000100   0.0
062 R000100   0.0
063 A000100  43
063 B000100  0.0
064 A000100 N
064 B000100 N
070 A010100 Y
070 A020100 Y
070 B010100 N
070 B020100 N
070 C010100 N
070 C020100 N
070 D010100 N
070 D020100 N
070 E010100 N
070 E020100 N
070 F010100 N
070 F020100 N
070 G010100 N
070 G020100 N
070 H010100 N
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 N
070 J020100 N
070 K010100 N
070 K020100 N
070 L010100 N
070 L020100 N
070 M010100 N
070 M020100 N
070 N010100 Y
070 N020100 N
070 O010100 Y
070 O020100 N
070 P010100 Y
070 P020100 N
070 Q010100 N
070 Q020100 N
070 R010100 N
070 R020100 N
071 A000100         0
071 B000100         0
071 C000100         0
<PAGE>      PAGE  9
071 D000100    0
072 A000100 12
072 B000100    31721
072 C000100        0
072 D000100        0
072 E000100        0
072 F000100     2818
072 G000100      425
072 H000100        0
072 I000100      570
072 J000100       55
072 K000100        0
072 L000100       75
072 M000100        7
072 N000100       71
072 O000100       24
072 P000100        0
072 Q000100      100
072 R000100       13
072 S000100        6
072 T000100     3020
072 U000100        0
072 V000100        0
072 W000100        7
072 X000100     7191
072 Y000100     1533
072 Z000100    26063
072AA000100        0
072BB000100        0
072CC010100        0
072CC020100        0
072DD010100    26063
072DD020100        0
072EE000100        0
073 A010100   0.0500
073 A020100   0.0000
073 B000100   0.0000
073 C000100   0.0000
074 A000100        4
074 B000100   316800
074 C000100   239678
074 D000100        0
074 E000100        0
074 F000100        0
074 G000100        0
074 H000100        0
074 I000100        0
074 J000100        0
074 K000100        0
074 L000100     1868
074 M000100        0
<PAGE>      PAGE  10
074 N000100   558350
074 O000100        0
074 P000100        0
074 Q000100        0
074 R010100        0
074 R020100        0
074 R030100        0
074 R040100     1166
074 S000100        0
074 T000100   557184
074 U010100   557184
074 U020100        0
074 V010100     1.00
074 V020100     0.00
074 W000100   0.9999
074 X000100    12112
074 Y000100        0
075 A000100   563564
075 B000100        0
076  000100     0.00
015 A000201 STATE STREET BANK AND TRUST COMPANY
015 B000201 C
015 C010201 BOSTON
015 C020201 MA
015 C030201 02266
015 C040201 8600
015 E010201 X
015 A000202 BANKERS TRUST CO.
015 B000202 S
015 C010202 NEW YORK
015 C020202 NY
015 C030202 10015
015 E010202 X
015 A000203 BANK OF NEW YORK
015 B000203 S
015 C010203 NEW YORK
015 C020203 NY
015 C030203 10006
015 E010203 X
015 A000204 THE CHASE MANHATTAN CORP.
015 B000204 S
015 C010204 NEW YORK
015 C020204 NY
015 C030204 10006
015 E010204 X
015 A000205 MORGAN GUARANTY BANK & TRUST CO.
015 B000205 S
015 C010205 NEW YORK
015 C020205 NY
015 C030205 10015
015 E010205 X
<PAGE>      PAGE  11
015 A000206 NATIONSBANK OF NORTH CAROLINA
015 B000206 S
015 C010206 CHARLOTTE
015 C020206 NC
015 C030206 28255
015 E010206 X
015 A000207 PNC BANK, NA
015 B000207 S
015 C010207 PITTSBURGH
015 C020207 PA
015 C030207 15265
015 E010207 X
028 A010200    276506
028 A020200      1257
028 A030200         0
028 A040200    231644
028 B010200    219164
028 B020200      1409
028 B030200         0
028 B040200    184888
028 C010200    166156
028 C020200      1465
028 C030200         0
028 C040200    165662
028 D010200    205339
028 D020200      1171
028 D030200         0
028 D040200    183380
028 E010200    247149
028 E020200      1335
028 E030200         0
028 E040200    265382
028 F010200    210148
028 F020200      2414
028 F030200         0
028 F040200    189750
028 G010200   1324462
028 G020200      9051
028 G030200         0
028 G040200   1220706
028 H000200         0
029  000200 N
030 A000200      0
030 B000200  0.00
030 C000200  0.00
031 A000200      0
031 B000200      0
032  000200      0
033  000200      0
034  000200 N
035  000200      0
<PAGE>      PAGE  12
036 B000200      0
037  000200 N
038  000200      0
039  000200 N
040  000200 Y
041  000200 Y
042 A000200   0
042 B000200   0
042 C000200 100
042 D000200   0
042 E000200   0
042 F000200   0
042 G000200   0
042 H000200   0
043  000200    582
044  000200      0
045  000200 Y
046  000200 N
047  000200 Y
048  000200  0.500
048 A010200        0
048 A020200 0.000
048 B010200        0
048 B020200 0.000
048 C010200        0
048 C020200 0.000
048 D010200        0
048 D020200 0.000
048 E010200        0
048 E020200 0.000
048 F010200        0
048 F020200 0.000
048 G010200        0
048 G020200 0.000
048 H010200        0
048 H020200 0.000
048 I010200        0
048 I020200 0.000
048 J010200        0
048 J020200 0.000
048 K010200        0
048 K020200 0.000
049  000200 N
050  000200 N
051  000200 N
052  000200 N
053 A000200 Y
053 B000200 Y
053 C000200 N
055 A000200 N
055 B000200 N
<PAGE>      PAGE  13
056  000200 N
057  000200 N
058 A000200 N
059  000200 Y
060 A000200 N
060 B000200 N
061  000200    10000
062 A000200 Y
062 B000200   0.0
062 C000200   0.0
062 D000200   0.0
062 E000200  99.4
062 F000200   0.0
062 G000200   0.0
062 H000200   0.0
062 I000200   0.0
062 J000200   0.0
062 K000200   0.0
062 L000200   0.0
062 M000200   0.0
062 N000200   0.0
062 O000200   0.0
062 P000200   0.0
062 Q000200   0.0
062 R000200   0.0
063 A000200  41
063 B000200  0.0
064 A000200 Y
064 B000200 N
070 A010200 Y
070 A020200 N
070 B010200 N
070 B020200 N
070 C010200 N
070 C020200 N
070 D010200 N
070 D020200 N
070 E010200 N
070 E020200 N
070 F010200 N
070 F020200 N
070 G010200 N
070 G020200 N
070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 Y
070 J020200 Y
070 K010200 N
070 K020200 N
<PAGE>      PAGE  14
070 L010200 N
070 L020200 N
070 M010200 N
070 M020200 N
070 N010200 N
070 N020200 N
070 O010200 Y
070 O020200 N
070 P010200 Y
070 P020200 Y
070 Q010200 N
070 Q020200 N
070 R010200 N
070 R020200 N
071 A000200         0
071 B000200         0
071 C000200         0
071 D000200    0
072 A000200 12
072 B000200    22528
072 C000200        0
072 D000200        0
072 E000200        0
072 F000200     2911
072 G000200      439
072 H000200        0
072 I000200      645
072 J000200       29
072 K000200        0
072 L000200      162
072 M000200        8
072 N000200       85
072 O000200       18
072 P000200        0
072 Q000200      100
072 R000200       13
072 S000200       19
072 T000200     2038
072 U000200        0
072 V000200        0
072 W000200       37
072 X000200     6504
072 Y000200      605
072 Z000200    16629
072AA000200        0
072BB000200        0
072CC010200        0
072CC020200        0
072DD010200    16629
072DD020200        0
072EE000200        0
<PAGE>      PAGE  15
073 A010200   0.0300
073 A020200   0.0000
073 B000200   0.0000
073 C000200   0.0000
074 A000200      736
074 B000200        0
074 C000200   643785
074 D000200        0
074 E000200        0
074 F000200        0
074 G000200        0
074 H000200        0
074 I000200        0
074 J000200        0
074 K000200        0
074 L000200     4447
074 M000200       33
074 N000200   649001
074 O000200        0
074 P000200        0
074 Q000200        0
074 R010200        0
074 R020200        0
074 R030200        0
074 R040200     1188
074 S000200        0
074 T000200   647813
074 U010200   647813
074 U020200        0
074 V010200     1.00
074 V020200     0.00
074 W000200   1.0000
074 X000200     6786
074 Y000200        0
075 A000200   582197
075 B000200        0
076  000200     0.00
015 A000301 STATE STREET BANK AND TRUST COMPANY
015 B000301 C
015 C010301 BOSTON
015 C020301 MA
015 C030301 02266
015 C040301 8600
015 E010301 X
015 A000302 BANKERS TRUST CO.
015 B000302 S
015 C010302 NEW YORK
015 C020302 NY
015 C030302 10015
015 E010302 X
015 A000303 BANK OF NEW YORK
<PAGE>      PAGE  16
015 B000303 S
015 C010303 NEW YORK
015 C020303 NY
015 C030303 10006
015 E010303 X
015 A000304 THE CHASE MANHATTAN CORP.
015 B000304 S
015 C010304 NEW YORK
015 C020304 NY
015 C030304 10006
015 E010304 X
015 A000305 MORGAN GUARANTY BANK & TRUST CO.
015 B000305 S
015 C010305 NEW YORK
015 C020305 NY
015 C030305 10015
015 E010305 X
015 A000306 NATIONSBANK OF NORTH CAROLINA
015 B000306 S
015 C010306 CHARLOTTE
015 C020306 NC
015 C030306 28255
015 E010306 X
015 A000307 PNC BANK, NA
015 B000307 S
015 C010307 PITTSBURGH
015 C020307 PA
015 C030307 15265
015 E010307 X
028 A010300   1130700
028 A020300     11491
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028 B020300     12265
028 B030300         0
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028 C020300     14490
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028 C040300    853065
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028 D020300     12353
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028 D040300   1081989
028 E010300   1302979
028 E020300     12992
028 E030300         0
028 E040300   1282644
028 F010300    983782
028 F020300     18653
<PAGE>      PAGE  17
028 F030300         0
028 F040300    961272
028 G010300   6733257
028 G020300     82244
028 G030300         0
028 G040300   6215960
028 H000300         0
029  000300 N
030 A000300      0
030 B000300  0.00
030 C000300  0.00
031 A000300      0
031 B000300      0
032  000300      0
033  000300      0
034  000300 N
035  000300      0
036 B000300      0
037  000300 N
038  000300      0
039  000300 N
040  000300 Y
041  000300 Y
042 A000300   0
042 B000300   0
042 C000300 100
042 D000300   0
042 E000300   0
042 F000300   0
042 G000300   0
042 H000300   0
043  000300   3144
044  000300      0
045  000300 Y
046  000300 N
047  000300 Y
048  000300  0.500
048 A010300        0
048 A020300 0.000
048 B010300        0
048 B020300 0.000
048 C010300        0
048 C020300 0.000
048 D010300        0
048 D020300 0.000
048 E010300        0
048 E020300 0.000
048 F010300        0
048 F020300 0.000
048 G010300        0
048 G020300 0.000
<PAGE>      PAGE  18
048 H010300        0
048 H020300 0.000
048 I010300        0
048 I020300 0.000
048 J010300        0
048 J020300 0.000
048 K010300        0
048 K020300 0.000
049  000300 N
050  000300 N
051  000300 N
052  000300 N
053 A000300 Y
053 B000300 Y
053 C000300 N
055 A000300 N
055 B000300 N
056  000300 N
057  000300 N
058 A000300 N
059  000300 Y
060 A000300 Y
060 B000300 Y
061  000300    10000
062 A000300 Y
062 B000300   0.0
062 C000300   0.0
062 D000300  15.6
062 E000300   0.0
062 F000300   1.3
062 G000300   6.1
062 H000300   0.0
062 I000300  44.1
062 J000300   5.3
062 K000300   0.0
062 L000300  27.3
062 M000300   0.0
062 N000300   0.0
062 O000300   0.0
062 P000300   0.0
062 Q000300   0.0
062 R000300   0.0
063 A000300  45
063 B000300  0.0
064 A000300 Y
064 B000300 N
070 A010300 Y
070 A020300 Y
070 B010300 N
070 B020300 N
070 C010300 N
<PAGE>      PAGE  19
070 C020300 N
070 D010300 N
070 D020300 N
070 E010300 N
070 E020300 N
070 F010300 N
070 F020300 N
070 G010300 N
070 G020300 N
070 H010300 N
070 H020300 N
070 I010300 N
070 I020300 N
070 J010300 Y
070 J020300 Y
070 K010300 N
070 K020300 N
070 L010300 Y
070 L020300 Y
070 M010300 N
070 M020300 N
070 N010300 Y
070 N020300 N
070 O010300 Y
070 O020300 N
070 P010300 Y
070 P020300 N
070 Q010300 N
070 Q020300 N
070 R010300 N
070 R020300 N
071 A000300         0
071 B000300         0
071 C000300         0
071 D000300    0
072 A000300 12
072 B000300   180158
072 C000300        0
072 D000300        0
072 E000300        0
072 F000300    15717
072 G000300     2372
072 H000300        0
072 I000300     6564
072 J000300      209
072 K000300        0
072 L000300      633
072 M000300       27
072 N000300      514
072 O000300       49
072 P000300        0
<PAGE>      PAGE  20
072 Q000300      153
072 R000300       13
072 S000300       12
072 T000300    11002
072 U000300        0
072 V000300        0
072 W000300       56
072 X000300    37321
072 Y000300     5759
072 Z000300   148596
072AA000300        0
072BB000300        0
072CC010300        0
072CC020300        0
072DD010300   148596
072DD020300        0
072EE000300        0
073 A010300   0.0500
073 A020300   0.0000
073 B000300   0.0000
073 C000300   0.0000
074 A000300     9178
074 B000300   583655
074 C000300  3150121
074 D000300        0
074 E000300        0
074 F000300        0
074 G000300        0
074 H000300        0
074 I000300        0
074 J000300        0
074 K000300        0
074 L000300    15585
074 M000300      223
074 N000300  3758762
074 O000300        0
074 P000300        0
074 Q000300        0
074 R010300        0
074 R020300        0
074 R030300        0
074 R040300    10728
074 S000300        0
074 T000300  3748034
074 U010300  3748034
074 U020300        0
074 V010300     1.00
074 V020300     0.00
074 W000300   0.9999
074 X000300   221771
074 Y000300        0
<PAGE>      PAGE  21
075 A000300  3143505
075 B000300        0
076  000300     0.00
015 A000401 STATE STREET BANK AND TRUST COMPANY
015 B000401 C
015 C010401 BOSTON
015 C020401 MA
015 C030401 02266
015 C040401 860
015 E010401 X
015 A000402 BANKERS TRUST CO.
015 B000402 S
015 C010402 NEW YORK
015 C020402 NY
015 C030402 10015
015 E010402 X
015 A000403 BANK OF NEW YORK
015 B000403 S
015 C010403 NEW YORK
015 C020403 NY
015 C030403 10006
015 E010403 X
015 A000404 THE CHASE MANHATTAN CORP.
015 B000404 S
015 C010404 NEW YORK
015 C020404 NY
015 C030404 10006
015 E010404 X
015 A000405 MORGAN GUARANTY BANK & TRUST CO.
015 B000405 S
015 C010405 NEW YORK
015 C020405 NY
015 C030405 10015
015 E010405 X
015 A000406 NATIONS BANK OF NORTH CAROLINA
015 B000406 S
015 C010406 CHARLOTTE
015 C020406 NC
015 C030406 28255
015 E010406 X
015 A000407 PNC BANK, NA
015 B000407 S
015 C010407 PITTSBURGH
015 C020407 PA
015 C030407 15265
015 E010407 X
028 A010400    452459
028 A020400      2798
028 A030400         0
028 A040400    504229
028 B010400    342876
<PAGE>      PAGE  22
028 B020400      2981
028 B030400         0
028 B040400    363617
028 C010400    198828
028 C020400      3119
028 C030400         0
028 C040400    199119
028 D010400    247930
028 D020400      2509
028 D030400         0
028 D040400    252401
028 E010400    309850
028 E020400      2691
028 E030400         0
028 E040400    316337
028 F010400    267655
028 F020400      4209
028 F030400         0
028 F040400    265254
028 G010400   1819598
028 G020400     18307
028 G030400         0
028 G040400   1900957
028 H000400         0
029  000400 N
030 A000400      0
030 B000400  0.00
030 C000400  0.00
031 A000400      0
031 B000400      0
032  000400      0
033  000400      0
034  000400 N
035  000400      0
036 B000400      0
037  000400 N
038  000400      0
039  000400 N
040  000400 Y
041  000400 Y
042 A000400   0
042 B000400   0
042 C000400 100
042 D000400   0
042 E000400   0
042 F000400   0
042 G000400   0
042 H000400   0
043  000400    827
044  000400      0
045  000400 Y
<PAGE>      PAGE  23
046  000400 N
047  000400 Y
048  000400  0.500
048 A010400        0
048 A020400 0.000
048 B010400        0
048 B020400 0.000
048 C010400        0
048 C020400 0.000
048 D010400        0
048 D020400 0.000
048 E010400        0
048 E020400 0.000
048 F010400        0
048 F020400 0.000
048 G010400        0
048 G020400 0.000
048 H010400        0
048 H020400 0.000
048 I010400        0
048 I020400 0.000
048 J010400        0
048 J020400 0.000
048 K010400        0
048 K020400 0.000
049  000400 N
050  000400 N
051  000400 N
052  000400 N
053 A000400 Y
053 B000400 Y
053 C000400 N
055 A000400 N
055 B000400 N
056  000400 N
057  000400 N
058 A000400 N
059  000400 Y
060 A000400 Y
060 B000400 Y
061  000400    10000
062 A000400 Y
062 B000400  15.8
062 C000400   0.0
062 D000400  83.6
062 E000400   0.0
062 F000400   0.0
062 G000400   0.0
062 H000400   0.0
062 I000400   0.0
062 J000400   0.0
<PAGE>      PAGE  24
062 K000400   0.0
062 L000400   0.0
062 M000400   0.0
062 N000400   0.0
062 O000400   0.0
062 P000400   0.0
062 Q000400   0.0
062 R000400   0.0
063 A000400  40
063 B000400  0.0
064 A000400 N
064 B000400 N
070 A010400 Y
070 A020400 Y
070 B010400 N
070 B020400 N
070 C010400 N
070 C020400 N
070 D010400 N
070 D020400 N
070 E010400 N
070 E020400 N
070 F010400 N
070 F020400 N
070 G010400 N
070 G020400 N
070 H010400 N
070 H020400 N
070 I010400 N
070 I020400 N
070 J010400 N
070 J020400 N
070 K010400 N
070 K020400 N
070 L010400 N
070 L020400 N
070 M010400 N
070 M020400 N
070 N010400 N
070 N020400 N
070 O010400 Y
070 O020400 N
070 P010400 Y
070 P020400 N
070 Q010400 N
070 Q020400 N
070 R010400 N
070 R020400 N
071 A000400         0
071 B000400         0
071 C000400         0
<PAGE>      PAGE  25
071 D000400    0
072 A000400 12
072 B000400    46348
072 C000400        0
072 D000400        0
072 E000400        0
072 F000400     4134
072 G000400      624
072 H000400        0
072 I000400      629
072 J000400       86
072 K000400        0
072 L000400       70
072 M000400        8
072 N000400       57
072 O000400       53
072 P000400        0
072 Q000400      140
072 R000400       13
072 S000400        6
072 T000400     4442
072 U000400        0
072 V000400        0
072 W000400       11
072 X000400    10273
072 Y000400     1972
072 Z000400    38047
072AA000400        0
072BB000400        0
072CC010400        0
072CC020400        0
072DD010400    38047
072DD020400        0
072EE000400        0
073 A010400   0.0500
073 A020400   0.0000
073 B000400   0.0000
073 C000400   0.0000
074 A000400       23
074 B000400   686600
074 C000400   129819
074 D000400        0
074 E000400        0
074 F000400        0
074 G000400        0
074 H000400        0
074 I000400        0
074 J000400        0
074 K000400        0
074 L000400     7394
074 M000400        0
<PAGE>      PAGE  26
074 N000400   823836
074 O000400        0
074 P000400        0
074 Q000400        0
074 R010400        0
074 R020400        0
074 R030400        0
074 R040400     2352
074 S000400        0
074 T000400   821484
074 U010400   821484
074 U020400        0
074 V010400     1.00
074 V020400     0.00
074 W000400   1.0001
074 X000400     7881
074 Y000400        0
075 A000400   826882
075 B000400        0
076  000400     0.00
SIGNATURE   S. ELLIOTT COHAN                             
TITLE       ASST. GEN. COUNSEL  
 


<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 01
   <NAME> GOVERNMENT CASH SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          MAY-31-1998
<PERIOD-END>                               MAY-31-1998
<INVESTMENTS-AT-COST>                        556477610
<INVESTMENTS-AT-VALUE>                       556477610
<RECEIVABLES>                                  1868243
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                              3907
<TOTAL-ASSETS>                               558349760
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      1166217
<TOTAL-LIABILITIES>                            1166217
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     557183543
<SHARES-COMMON-STOCK>                        557183543
<SHARES-COMMON-PRIOR>                        530367058
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                 557183543
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                             31721150
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 5657657
<NET-INVESTMENT-INCOME>                       26063493
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                         26063493
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     26063493
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     2571697688
<NUMBER-OF-SHARES-REDEEMED>                 2567675348
<SHARES-REINVESTED>                           22794145
<NET-CHANGE-IN-ASSETS>                        26816485
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          2817822
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                7190900
<AVERAGE-NET-ASSETS>                         563564428
<PER-SHARE-NAV-BEGIN>                            1.000
<PER-SHARE-NII>                                  0.050
<PER-SHARE-GAIN-APPREC>                          0.000
<PER-SHARE-DIVIDEND>                             0.050
<PER-SHARE-DISTRIBUTIONS>                        0.000
<RETURNS-OF-CAPITAL>                             0.000
<PER-SHARE-NAV-END>                              1.000
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                             0.000
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 02
   <NAME> MUNICIPAL CASH SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          MAY-31-1998
<PERIOD-END>                               MAY-31-1998
<INVESTMENTS-AT-COST>                        643785454
<INVESTMENTS-AT-VALUE>                       643785454
<RECEIVABLES>                                  4446775
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                            768605
<TOTAL-ASSETS>                               649000834
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      1188064
<TOTAL-LIABILITIES>                            1188064
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     647812770
<SHARES-COMMON-STOCK>                        647812770
<SHARES-COMMON-PRIOR>                        515059673
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                 647812770
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                             22527547
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 5898458
<NET-INVESTMENT-INCOME>                       16629089
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                         16629089
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     16629089
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     2320881148
<NUMBER-OF-SHARES-REDEEMED>                 2204129137
<SHARES-REINVESTED>                           16001086
<NET-CHANGE-IN-ASSETS>                       132753097
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          2910985
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                6503987
<AVERAGE-NET-ASSETS>                         582196557
<PER-SHARE-NAV-BEGIN>                            1.000
<PER-SHARE-NII>                                  0.030
<PER-SHARE-GAIN-APPREC>                          0.000
<PER-SHARE-DIVIDEND>                             0.030
<PER-SHARE-DISTRIBUTIONS>                        0.000
<RETURNS-OF-CAPITAL>                             0.000
<PER-SHARE-NAV-END>                              1.000
<EXPENSE-RATIO>                                   1.01
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                             0.000
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 03
   <NAME> PRIME CASH SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          MAY-31-1998
<PERIOD-END>                               MAY-31-1998
<INVESTMENTS-AT-COST>                       3733775720
<INVESTMENTS-AT-VALUE>                      3733775720
<RECEIVABLES>                                 15585962
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                           9400766
<TOTAL-ASSETS>                              3758762448
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                     10728483
<TOTAL-LIABILITIES>                           10728483
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    3748033965
<SHARES-COMMON-STOCK>                       3748033965
<SHARES-COMMON-PRIOR>                       2363381880
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                3748033965
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            180157760
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                31561331
<NET-INVESTMENT-INCOME>                      148596429
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                        148596429
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    148596429
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                    12363460681
<NUMBER-OF-SHARES-REDEEMED>                11122809806
<SHARES-REINVESTED>                          144001210
<NET-CHANGE-IN-ASSETS>                      1384652085
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         15717524
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               37320380
<AVERAGE-NET-ASSETS>                        3143504853
<PER-SHARE-NAV-BEGIN>                            1.000
<PER-SHARE-NII>                                    .05
<PER-SHARE-GAIN-APPREC>                          0.000
<PER-SHARE-DIVIDEND>                               .05
<PER-SHARE-DISTRIBUTIONS>                        0.000
<RETURNS-OF-CAPITAL>                             0.000
<PER-SHARE-NAV-END>                              1.000
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                             0.000
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 04
   <NAME> TREASURY CASH SERIES
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          MAY-31-1998
<PERIOD-END>                               MAY-31-1998
<INVESTMENTS-AT-COST>                        816419391
<INVESTMENTS-AT-VALUE>                       816419391
<RECEIVABLES>                                  7394287
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                             22747
<TOTAL-ASSETS>                               823836425
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      2352198
<TOTAL-LIABILITIES>                            2352198
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     821484227
<SHARES-COMMON-STOCK>                        821484227
<SHARES-COMMON-PRIOR>                        771163822
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                 821484227
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                             46348470
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 8301156
<NET-INVESTMENT-INCOME>                       38047314
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                         38047314
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     38047314
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     3586341688
<NUMBER-OF-SHARES-REDEEMED>                 3569463870
<SHARES-REINVESTED>                           33442587
<NET-CHANGE-IN-ASSETS>                        50320405
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          4134411
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               10273632
<AVERAGE-NET-ASSETS>                         826882242
<PER-SHARE-NAV-BEGIN>                            1.000
<PER-SHARE-NII>                                  0.050
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                             0.050
<PER-SHARE-DISTRIBUTIONS>                        0.000
<RETURNS-OF-CAPITAL>                             0.000
<PER-SHARE-NAV-END>                              1.000
<EXPENSE-RATIO>                                  1.000
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


INDEPENDENT AUDITORS' REPORT

To the Board of Directors and Shareholders of Cash Trust Series, Inc.:

In planning and performing our audit of the financial statements of Cash 
Trust Series, Inc. (Comprising the following portfolios: Government Cash 
Series, Municipal Cash Series, Prime Cash Series, and Treasury Cash 
Series) for the year ended May 31, 1998 (on which we have issued our 
reports dated July 10, 1998), 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 Cash Trust Series, 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 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, errors or fraud 
may occur and not be detected.  Also, projection of any evaluation of 
internal control to future periods is subject to the risk that it may 
become inadequate because of changes in conditions or that the 
effectiveness of the design and operation may deteriorate.

Our consideration of the Fund's 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 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 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 May 31, 1998.

This report is intended solely for the information and use of management 
and the Securities and Exchange Commission.



DELOITTE & TOUCHE LLP

July 10, 1998


Item 77C
Submission of Matters to a Vote of Security Holders

A Special Meeting of Shareholders of Cash Trust Series, Inc. (the 
"Corporation") was held on May 15, 1998.  The following items, which are 
required to be reported under this Item 77 C were approved at the 
meeting:

1.  To elect Directors;

					SHARES VOTED    SHARES WITHHELD 
DIRECTOR				    FOR		 AUTHORITY	
Thomas G. Bigley			3,096,135,538	166,988,035		
John E. Murray, Jr., J.D., S.J.D.	3,096,268,650	166,854,923
Nicholas P. Constantakis		3,096,798,545	166,325,028

Messers. Bigley, Murray and Constantakis, having been elected, now 
serve with the Corporation's Board of Directors which also consists 
of John F. Donahue, John T. Conroy, Jr., William J. Copeland, J. 
Christopher Donahue, James E. Dowd, Esq., Lawrence D. Ellis, M.D., 
Edward L. Flaherty, Jr., Esq., Peter E. Madden, Wesley W. Posvar, and 
Marjorie P. Smuts.

2.  To approve or disapprove an amendment to the fundamental investment 
policies on diversification of investments on behalf of Municipal Cash 
Series and Prime Cash Series;

Municipal Cash Series
Shares voted affirmatively . . . . . . . . . .    	239,908,782
Shares voted negatively . . . . . . . . . . .          	  5,861,211
Shares abstaining . . . . . . . . . . . . . . . .         6,689,056
Broker Non-Vote . . . . . . . . . . . . . . . .        	 85,945,816

Prime Cash Series
Shares voted affirmatively . . . . . . . . . .        1,512,588,840
Shares voted negatively . . . . . . . . . . . .       	 32,612,786
Shares abstaining . . . . . . . . . . . . . . . . .      75,203,288
Broker Non-Vote . . . . . . . . . . . . . . . . .     	559,973,364

3.  To approve or disapprove an amendment to change from a fundamental 
to an operating policy the ability to invest in restricted securities on 
behalf of Municipal Cash Series and Prime Cash Series;

Municipal Cash Series
Shares voted affirmatively . . . . . . . . .            232,164,427
Shares voted negatively . . . . . . . . . . .             9,463,315
Shares abstaining . . . . . . . . . . . . . . . .        10,831,308
Broker Non-Vote . . . . . . . . . . . . . . . .          85,945,815

Prime Cash Series
Shares voted affirmatively . . . . . . . . . .        1,468,556,965
Shares voted negatively . . . . . . . . . . . .          65,420,630
Shares abstaining . . . . . . . . . . . . . . . . .      86,427,319
Broker Non-Vote . . . . . . . . . . . . . . . . .       559,973,364

4.  To approve or disapprove an amendment in Prime Cash Series' 
fundamental investment policy on its intention to concentrate portfolio 
investments in one industry;

Prime Cash Series
Shares voted affirmatively . . . . . . . . . .        1,467,187,926
Shares voted negatively . . . . . . . . . . . .          70,422,501
Shares abstaining . . . . . . . . . . . . . . . . .      82,794,487
Broker Non-Vote . . . . . . . . . . . . . . . . .       559,973,364








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