CHAPTER III THE SOURCES OF THE LAw AND CUSTOM OF THE CONSTITUTION. THE legal rules and constitutional customs that form the « Constitutional Law and Custom” of Canada are derived from seven sources:—(1) Imperial Acts, (2) Dominion Acts, (8) Provincial Acts, (4) Orders in Council issued under Imperial, Dominion or Provincial authority, (5) Orders and rules of the Dominion Parliament and of Provincial Legislatures, (6) Usages, and (7) The Letters Patent, Commission and Instructions issued to the Governor-General. 1. Imperial Acts. Though the Union Act of 1867 contains the general scheme of the Constitution it has been supplemented by several subsequent and important statutes. The 34 & 35 Vie. (i) c. 28 conferred on the Dominion power to establish new provinces and to provide for the government of any territory not within the limits of a province, The 38 & 39 Vic. (i) c. 38 repealed the 18th section of the Act of 1867 relating to the privileges of the Dominion Parliament and more clearly defined the powers of the legislature to determine its own privileges, and the 49 & 50 Vic. (i) c. 35 authorized the Canadian Parliament to make provision for the representation of new provinces in the Senate and House of Commons.