§ 2. "That the Ottawa Agreements Act, 1932, and any other enactment relating to customs which amends or relates to that Act, shall have effect, as from the date on which the Agreement made on the twenty-third day of February, nineteen hundred and thirty-seven, between His Majesty's Government in the United Kingdom and His Majesty's Government in the Dominion of Canada comes into force under Article 17 thereof, as if that Agreement were substituted for the Agreement set out in Part I of the First Schedule to that Act."