Mr. M.N. Phadke, Senior Advocate appearing for the appellants in Civil Appeals 1652 to 1659 of 1978 drew our attention to the 562 special provisions in various Government orders which are executive instructions issued before the Adhoc Rules were framed under the proviso to Article 309 of the Constitution on 19.9.1973 and to some special provisions made even in those adhoc rules showing preference and priority for Post Graduate School Assistants holding first and second class Post Graduate degrees over such Assistants holding only third class Post Graduate degrees in the matter of appointment as Junior Lecturers in Junior Colleges and of promotion of Junior Lecturers as Principals of Junior Colleges and submitted that fixing seniority of Junior Lecturers holding first and second class Post Graduate degrees, forming one group and of those holding third class Post Graduate degrees, forming another group, on the basis of the dates of their original appointment as Post Graduate School Assistants is arbitrary and therefore the impugned seniority list of 1976 should be quashed and the seniority of the petitioners in the representation Petitions (appellants in Civil Appeals 1652 to 1659 of 1978) fixed in the list of 1974 should be restored.