<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> JUN-30-1998 <CASH> 2,781,574 <SECURITIES> 0 <RECEIVABLES> 994,263 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 3,775,837 <PP&E> 2,036,282 <DEPRECIATION> 1,796,763 <TOTAL-ASSETS> 4,015,356 <CURRENT-LIABILITIES> 332,599 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 3,682,757 <TOTAL-LIABILITY-AND-EQUITY> 4,015,356 <SALES> 0 <TOTAL-REVENUES> 915,243 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 482,454 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 432,789 <INCOME-TAX> 0 <INCOME-CONTINUING> 432,789 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 432,789 <EPS-PRIMARY> 0 <EPS-DILUTED> 0