In the present case after 21 March, 1963 memorandum was superseded and abrogated by 2 April, 1968 memorandum the respondents could not draw any sustenance from 21 March, 1963 memorandum. 2 April, 1 968 memorandum reduced the age of superannuation and withdrew. the benefits which had been conferred by 21 March, 1963 memorandum. This was again done in the interest of the Government servants to prevent unemployment as a result of increase of age of superannuation. This Court in Bishun Narain Mishra's case(1 ) in dealing with a notification directing ·all those who were be.tween the age of 55 and 58 and had been retained in service could be retired on 31December,1961 said that the rule treated alike all those who were between the age of 55 and 5 8 years. In the present appeals, the 1963 notification treated all Government servants, alike, namely, that they could be retained beyond the age of superannuation, but such retention depended upon the exigencies of the public service and the consideration of physical fitness and efficiency. Therefore it could not be said that 1he memorandum of 1963 infringed Article 14.