(3)So far as regards any such amendment as is mentioned in paragraph (c) of the last preceding subsection, the provisions of subsection (1) of this section shall apply to a resolution of a Provincial Legislature whenever passed, but, save as aforesaid, those provisions shall not apply to any resolution passed before the expiration of ten years, in the case of a resolution of the Federal Legislature, from the establishment of the Federation, and, in the case of a resolution of a. Provincial Legislature, from the commencement of Part III of this Act.