Before this Court it has been urged on behalf of the r e spondents 94 that (i) promotions of employees including Supervisor ' A ' were governed by the Rules and in view of Rule 12 no a p pointment could be made otherwise than as specified therei n; (ii) appointments by promotion were to be made according to Rule 8 on the basis of selection list prepared in the mann er provided there in and there was no scope for automat ic promotion merely after expiry of 2 years of continuo us service on the basis of the circular dated 6th Novembe r, 1962; (iii) the circular which was in the nature of an executive instruction prescribed 2 years ' service as Supe r visor 'A ' to make them only eligible for promotion; and (i v) after the issue of the subsequent order dated 28th Decembe r, 1965 and circular dated 20th January, 1966 no Supervis or could claim to have become eligible for promotion merely on completion of 2 years ' satisfactory service and his prom o tion thereafter could be effected only in accordance wi th the normal Rules.