5. (1) It shall be lawful for His Majesty, if an address in that behalf has been presented to him by each House of Parliament and if the condition herein-after mentioned is satisfied, to declare by Proclamation that as from the day therein appointed there shall be united in a Federation under the Crown, by the name of the Federation of India,-
(a) the Provinces hereinafter called Governors’ Provinces ; and
(b) the Indian States which have acceded or may thereafter accede to the Federation ; and in the Federation so established there shall be included the Provinces hereinafter called Chief Commissioners’ Provinces.
(2) The condition referred to is that States-
(a) the Rulers whereof will, in accordance with the provisions contained in Part II of the First Schedule to this Act, be entitled to choose not less than fifty-two members of the Council of State; and
(b) the aggregate population whereof, as ascertained in accordance with the said provisions, amounts to at least one-half of the total population of the States as so ascertained, have acceded to the Federation.