<ARTICLE> 5

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                       6,147,442
<SECURITIES>                                         0
<RECEIVABLES>                                   62,928
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                             6,292,370
<PP&E>                                      32,453,632
<DEPRECIATION>                            (28,610,333)
<TOTAL-ASSETS>                              10,135,669
<CURRENT-LIABILITIES>                          568,347
<BONDS>                                      1,273,491
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                   8,293,831
<TOTAL-LIABILITY-AND-EQUITY>                10,135,669
<SALES>                                              0
<TOTAL-REVENUES>                             4,879,638
<CGS>                                                0
<TOTAL-COSTS>                                2,119,455
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              98,394
<INCOME-PRETAX>                              2,661,789
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                          2,661,789
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 2,661,789
<EPS-BASIC>                                          0
<EPS-DILUTED>                                        0