1. - The petitioner passed the M.S. (General Surgery) examination in April 1960 and entered the service of the Rajasthan State as Civil Assistant Surgeon in May 1960. He held that post on a substantive basis when he was appointed Civil Assistant Surgeon-cum-Tutor in surgery for the periods mentioned by him, and then as Lecturer in surgery from September 16, 1965 to July 30, 1967. At that time the Rajasthan Medical Service (Collegiate Branch) Rules, 1962 were in force. He was appointed as officiating Reader in surgery in the Medical College at Bikaner, for a period of one year, by an order dated July 20, 1967. Similar appointments were given to some of the respondents. The petitioner took over charge as officiating Reader on August 1, 1967, but the Government amended that order on August 16, 1967 and made the petitioner an officiating Lecturer. He challenged that order by writ petition No. 150 of 1968 which was allowed by a learned single Judge on July 22, 1968. The petitioner therefore continued to work as a Reader.

2. The State Government promulgated the Rajasthan Medical Service (Collegiate Branch) Special Selection Rules, 1968, hereinafter referred to as "the Rules of 19