1147, Education, dated 4.6.1970 in which Government considered and decided that in the common seniority list first rank should be given only two those who have secured first or second class Post Graduate degree with 50 per cent marks and above and third class Post Graduate Degree holders with not less than five years of service, working as Post Graduate Assistants should be ranked next and third class Post Graduate Degree holders with less than five years of service, working as Post Graduate Assistants, should rank next, and (2) Rule 3(1) (i) and (2) of the Adhoc Rules, 1973 according to which in the appointment of Junior Lecturers preference has to be given firstly to persons with first or second class Post Graduate Degrees, secondly to persons with third class Post Graduate Degrees with not less than five years of service as Post Graduate Assistants and thirdly to persons with third class Post Graduate Degrees with less than five years of service as Post Graduate Assistants, Rule 13(1) of the Adhoc Rules confers seniority on third class Post Graduate Junior Lecturers over first and second class Post Graduate Junior Lecturers based on their earlier appointment as Post Graduate Assistants.