<ARTICLE>                                      5
<LEGEND>
     This schedule contains summary financial information extracted from the
consolidated balance sheet and the consolidated statement of operations and
is qualified in its entirety by reference to such financial statements.
</LEGEND>
       
                                            
<PERIOD-TYPE>                                  6-mos
<FISCAL-YEAR-END>                              Dec-31-1998
<PERIOD-END>                                   Jun-30-1998
<CASH>                                         505,571
<SECURITIES>                                   0
<RECEIVABLES>                                  0
<ALLOWANCES>                                   0
<INVENTORY>                                    0
<CURRENT-ASSETS>                               882,802
<PP&E>                                         10,744,015
<DEPRECIATION>                                 4,636,373
<TOTAL-ASSETS>                                 7,272,627
<CURRENT-LIABILITIES>                          444,102
<BONDS>                                        0
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<COMMON>                                       0
<OTHER-SE>                                     2,115,254
<TOTAL-LIABILITY-AND-EQUITY>                   7,272,627
<SALES>                                        0
<TOTAL-REVENUES>                               1,057,208
<CGS>                                          333,970
<TOTAL-COSTS>                                  477,179
<OTHER-EXPENSES>                               (10,082)
<LOSS-PROVISION>                               230,919
<INTEREST-EXPENSE>                             0
<INCOME-PRETAX>                                25,222
<INCOME-TAX>                                   0
<INCOME-CONTINUING>                            25,222
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   25,222
<EPS-PRIMARY>                                  1.49
<EPS-DILUTED>                                  1.49