1. - By this appeal under Section 18 of the Rajasthan High Court Ordinance, 1949, the unsuccessful petitioner questions the correctness of the order dated April 4, 1985 of the learned single Judge by which his petition under Article 226 of the Constitution of India was dismissed. The petitioner-appellant applied for registration under the General Registration Scheme, 1979 issued by the Rajasthan Housing Board, Jaipur by depositing a sum of Rs. 4,600/- on January 13, 1980 for allotment of house in the category of Middle Income-Group II under Item No. 2-7 of the Scheme. The registration certificate dated December 15, 1980 was issued by the Rajasthan Housing Board ('Board here in') under Rule 20(ii) of the General Registration Scheme, 1979. The Board again invited option through Lottery No. 4 in the year 1980-81 for allotment of house including the M.I.G.-II category. The petitioner-appellant submitted his option application form keeping in view the cost of the house mentioned in the General Registration Scheme, 1979. The house reserved in Lottery No. 4 held on January 19, 1982 was allotted to the petitioner on October 9, 1982. After the reservation of the house, the petition