[ARTICLE] 6
[CIK] 0000887428
[NAME] SMITH BARNEY ADJUSTABLE RATE GOVERNMENT INCOME FUND. CLASS I
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          MAY-31-1999
[PERIOD-END]                               MAY-31-1999
[INVESTMENTS-AT-COST]                      138,252,245
[INVESTMENTS-AT-VALUE]                     137,880,934
[RECEIVABLES]                                7,615,016
[ASSETS-OTHER]                                  16,038
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                             145,511,988
[PAYABLE-FOR-SECURITIES]                     3,574,756
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                   17,045,855
[TOTAL-LIABILITIES]                         20,620,611
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   132,049,911
[SHARES-COMMON-STOCK]                        2,583,524
[SHARES-COMMON-PRIOR]                          296,653
[ACCUMULATED-NII-CURRENT]                     (60,564)
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                    (6,724,283)
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                     (373,687)
[NET-ASSETS]                               124,891,377
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                            6,808,108
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               1,670,204
[NET-INVESTMENT-INCOME]                      5,137,904
[REALIZED-GAINS-CURRENT]                       429,844
[APPREC-INCREASE-CURRENT]                    (903,701)
[NET-CHANGE-FROM-OPS]                        4,664,047
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                      430,488
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                      3,264,303
[NUMBER-OF-SHARES-REDEEMED]                  1,014,615
[SHARES-REINVESTED]                             40,183
[NET-CHANGE-IN-ASSETS]                      12,164,241
[ACCUMULATED-NII-PRIOR]                       (80,229)
[ACCUMULATED-GAINS-PRIOR]                  (6,780,026)
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                          445,192
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                              1,670,204
[AVERAGE-NET-ASSETS]                         8,248,861
[PER-SHARE-NAV-BEGIN]                             9.87
[PER-SHARE-NII]                                   0.45
[PER-SHARE-GAIN-APPREC]                           0.03
[PER-SHARE-DIVIDEND]                              0.54
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                              0.03
[PER-SHARE-NAV-END]                               9.78
[EXPENSE-RATIO]                                   1.03
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>