British North America Act 1949

46 (1) Oleomargarine or margarine may be manufactured or sold in the Province of Newfoundland after the date of the Union and the Parliament of Canada shall not prohibit or restrict such manufacture or sale except at the request of the Legislature of the Province of Newfoundland, but nothing in this Term shall affect the power of the Parliament of Canada to require compliance with standards of quality applicable throughout Canada.

(2) Unless the Parliament of Canada otherwise provides or unless the sale and manufacture in, and the interprovincial movement between, all provinces of Canada other than Newfoundland, of oleomargarine and margarine, is lawful under the laws of Canada, oleomargarine or margarine shall not be sent, shipped, brought, or carried from the Province of Newfoundland into any other province of Canada.