<PAGE> PAGE 1
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<PAGE> PAGE 2
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<PAGE> PAGE 3
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<PAGE> PAGE 4
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<PAGE> PAGE 5
015 A000101 STATE STREET BANK AND TRUST COMPANY
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<PAGE> PAGE 6
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<PAGE> PAGE 7
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<PAGE> PAGE 8
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<PAGE> PAGE 9
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<PAGE> PAGE 10
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<PAGE> PAGE 11
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<PAGE> PAGE 12
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<PAGE> PAGE 13
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<PAGE> PAGE 14
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<PAGE> PAGE 15
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<PAGE> PAGE 16
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<PAGE> PAGE 17
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<PAGE> PAGE 18
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<PAGE> PAGE 19
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<PAGE> PAGE 20
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074 T000300 4728448
074 U010300 4728448
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074 V010300 1.00
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<PAGE> PAGE 21
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 353678
028 A020400 2892
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<PAGE> PAGE 22
028 C010400 227844
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028 D020400 2605
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028 E010400 317696
028 E020400 2739
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028 E040400 315031
028 F010400 360596
028 F020400 4438
028 F030400 0
028 F040400 388360
028 G010400 1960830
028 G020400 18490
028 G030400 0
028 G040400 2014032
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
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042 C000400 100
042 D000400 0
042 E000400 0
042 F000400 0
042 G000400 0
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043 000400 964
044 000400 0
045 000400 Y
046 000400 N
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<PAGE> PAGE 23
048 A010400 0
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048 B010400 0
048 B020400 0.000
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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 20.7
062 C000400 0.0
062 D000400 79.3
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062 F000400 0.0
062 G000400 0.0
062 H000400 0.0
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<PAGE> PAGE 24
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062 O000400 0.0
062 P000400 0.0
062 Q000400 0.0
062 R000400 0.0
063 A000400 52
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
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071 D000400 0
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072 B000400 49334
<PAGE> PAGE 25
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<PAGE> PAGE 26
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075 B000400 0
076 000400 0.00
SIGNATURE S. ELLIOTT COHAN
TITLE ASST. GEN. COUNSEL
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000852495
<NAME> CASH TRUST SERIES, INC
<SERIES>
<NUMBER> 01
<NAME> Government Cash Series
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<FISCAL-YEAR-END> May-31-1999
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<EXPENSE-RATIO> 1.00
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000852495
<NAME> CASH TRUST SERIES, INC.
<SERIES>
<NUMBER> 002
<NAME> MUNICIPAL CASH SERIES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-END> MAY-31-1999
<INVESTMENTS-AT-COST> 433,211,651
<INVESTMENTS-AT-VALUE> 433,211,651
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<EXPENSES-NET> (5,814,844)
<NET-INVESTMENT-INCOME> 14,744,857
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<NUMBER-OF-SHARES-SOLD> 2,052,211,320
<NUMBER-OF-SHARES-REDEEMED> (2,249,372,662)
<SHARES-REINVESTED> 13,799,382
<NET-CHANGE-IN-ASSETS> (210,361,960)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,866,150
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 6,485,606
<AVERAGE-NET-ASSETS> 573,540,199
<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
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[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0.000
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000852495
<NAME> CASH TRUST SERIES, INC
<SERIES>
<NUMBER> 03
<NAME> Prime Cash Series
<S> <C>
<PERIOD-TYPE> 12-mos
<FISCAL-YEAR-END> May-31-1999
<PERIOD-END> May-31-1999
<INVESTMENTS-AT-COST> 4,800,408,640
<INVESTMENTS-AT-VALUE> 4,800,408,640
<RECEIVABLES> 31,056,384
<ASSETS-OTHER> 718,794
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,832,183,818
<PAYABLE-FOR-SECURITIES> 49,000,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 54,735,452
<TOTAL-LIABILITIES> 103,735,452
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 0
<SHARES-COMMON-STOCK> 4,728,448,366
<SHARES-COMMON-PRIOR> 3,748,033,965
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 4,728,448,366
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 226,154,847
<OTHER-INCOME> 0
<EXPENSES-NET> (42,371,179)
<NET-INVESTMENT-INCOME> 183,783,668
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 0
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (183,783,668)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 14,914,745,750
<NUMBER-OF-SHARES-REDEEMED> (14,111,336,402)
<SHARES-REINVESTED> 177,005,053
<NET-CHANGE-IN-ASSETS> 980,414,401
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 21,092,710
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 49,141,763
<AVERAGE-NET-ASSETS> 4,218,541,948
<PER-SHARE-NAV-BEGIN> 1.000
<PER-SHARE-NII> 0.040
<PER-SHARE-GAIN-APPREC> 0.000
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> (0.040)
<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>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000852495
<NAME> CASH TRUST SERIES, INC
<SERIES>
<NUMBER> 04
<NAME> Treasury Cash Series
<S> <C>
<PERIOD-TYPE> 12-mos
<FISCAL-YEAR-END> May-31-1999
<PERIOD-END> May-31-1999
<INVESTMENTS-AT-COST> 969,533,375
<INVESTMENTS-AT-VALUE> 969,533,375
<RECEIVABLES> 4,578,610
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 974,111,985
<PAYABLE-FOR-SECURITIES> 400,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4,119,794
<TOTAL-LIABILITIES> 4,519,794
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 0
<SHARES-COMMON-STOCK> 969,592,191
<SHARES-COMMON-PRIOR> 821,484,227
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 969,592,191
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 49,334,146
<OTHER-INCOME> 0
<EXPENSES-NET> (9,686,282)
<NET-INVESTMENT-INCOME> 39,647,864
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 0
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (39,647,864)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3,989,765,831
<NUMBER-OF-SHARES-REDEEMED> (3,876,732,235)
<SHARES-REINVESTED> 35,074,368
<NET-CHANGE-IN-ASSETS> 148,107,964
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 4,821,924
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 10,396,759
<AVERAGE-NET-ASSETS> 964,359,999
<PER-SHARE-NAV-BEGIN> 1.000
<PER-SHARE-NII> 0.040
<PER-SHARE-GAIN-APPREC> 0.000
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> (0.040)
<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>
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:
Municipal Cash Series, Government Cash Series, Prime Cash Series,
and Treasury Cash Series) for the year ended May 31, 1999 (on
which we have issued our report dated July 12, 1999), 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 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,
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 or
procedures deteriorate.
Our consideration of the Funds' 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 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 Funds' internal control and its operation,
including controls for safeguarding securities, that we consider
to be material weaknesses as defined above as of May 31, 1999.
This report is intended solely for the information and use of
management and the Securities and Exchange Commission and is not
intended to be and should not be used for any other purpose.
DELOITTE & TOUCHE LLP
July 12, 1999
ITEM 77D
POLICIES WITH RESPECT TO SECURITY INVESTMENTS
The following actions were taken by the Board of Directors on
April 1, 1999 with regard to non-fundamental investment policies:
(1) Approved the elimination of the following non-
fundamental investment limitations of the Funds:
(a) The Fund will not invest in securities of a company
for the purpose of exercising control or
management; and
(b) The Fund will not invest in puts, calls, straddles,
spreads, or any combination of them.
(2) Approved revisions to the Fund's non-fundamental
investment limitation regarding restricted securities
(Government Cash Series only) to read as follows:
"The Fund may invest in restricted securities.
Restricted securities are any securities in which the
Fund may invest pursuant to its investment objective
and policies but which are subject to restrictions on
resale under federal securities law. Under criteria
established by the Directors certain restricted
securities are not determined to be liquid the Fund
will limit their purchase, together with other liquid
securities, to 10% of its net assets."
(3) Approved revisions to the Funds' non-fundamental
investment limitations to read as follows:
"The Fund will not purchase securities for which there
is no readily available market, or enter into
repurchase agreements or purchase time deposits
maturing in more than seven days, if immediately after
and as a result, the value of such securities would
exceed, in the aggregate, 10% of the Fund's net
assets."
(4) Approved the elimination of the following undertaking
of the Funds:
"The Fund does not expect to borrow money or pledge
securities in excess of 5% of the value of its net
assets during the coming fiscal year."
(5) Approved the addition of a non-fundamental investment
policy as follows in applying the Funds' concentration
restriction to the Funds:
"(a) utility companies will be divided according to
their services, for example, gas, gas transmission,
electric and telephone will each be considered a
separate industry; (b) financial service companies
will be classified according to the end users of their
services, for example, automobile finance, bank
finance and diversified finance will each be
considered a separate industry; and (c) asset-backed
securities will be classified according to the
underlying assets securing such securities."
(6) Approved the elimination of the Funds' non-fundamental
investment policy pertaining to when-issued and
delayed delivery transactions that provides that the
Fund will not engage in such transactions to an extent
that would cause the segregation of more than 20% of
the value of its total assets.
(7) Approved the addition of a non-fundamental investment
policy (Treasury Cash Series only) to read as follows:
"The Fund may engage in reverse repurchase
agreements.'
(8) Approved the addition of a non-fundamental policy that
provides that the Funds will pursue their investment
objectives by investing in a portfolio of money
market securities maturing in 397 days or less.
