<ARTICLE> 5
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                         374,860
<SECURITIES>                                         0
<RECEIVABLES>                                  123,430
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                               498,813
<PP&E>                                       5,762,753
<DEPRECIATION>                               3,003,882
<TOTAL-ASSETS>                               3,257,684
<CURRENT-LIABILITIES>                          153,934
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                   3,103,750
<TOTAL-LIABILITY-AND-EQUITY>                 3,257,684
<SALES>                                        416,435
<TOTAL-REVENUES>                               419,870
<CGS>                                          278,553
<TOTAL-COSTS>                                  278,553
<OTHER-EXPENSES>                               105,956
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 35,361
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                             35,361
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    35,361
<EPS-PRIMARY>                                     5.89
<EPS-DILUTED>                                     5.89