<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> JUN-30-1998 <CASH> 1,689,877 <SECURITIES> 9,546,936 <RECEIVABLES> 0 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 11,533,117 <PP&E> 10,788,451 <DEPRECIATION> (6,963,486) <TOTAL-ASSETS> 15,825,249 <CURRENT-LIABILITIES> 2,946,686 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 86,191,709 <OTHER-SE> (74,745,262) <TOTAL-LIABILITY-AND-EQUITY> 15,825,249 <SALES> 0 <TOTAL-REVENUES> 489,394 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 7,420,103 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 144,664 <INCOME-PRETAX> 0 <INCOME-TAX> 0 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (6,930,709) <EPS-PRIMARY> (.34) <EPS-DILUTED> (.34)