It was observed by the majority Judges of this Court at p. 308: "The question which must be considered is whether the notification issued by the President is law within the meaning of section 87 read with section 2 (d) of the Bombay Reorgani sation Act, 11 of 1960." After analysing the three stages of the constitutional process leading to the ultimate exercise of function of the Union Government the Court observed (at p. 309): "By article 53 the executive power of the Union is vested in the President and is exercisable by him either directly or through officers subordinate to him in accordance with the Constitution and the executive power of the Union by article 73 extends subject to the provisions of the Constitution: (a) to the matters with respect to which Parliament has power to make laws; and 414 (b) to the exercise of such rights, authority and jurisdiction as are exercisable by the Government of India by virtue of any treaty or agreements: Provided that the executive power referred to in sub cl.