12 THE SOURCES OF THE LAW AND tories!, British Columbia? and Prince Edward’s Island? into the Dominion. Several Orders in Council have been issued lisallowing Acts of the Dominion Parliament. Orders in Council are often issued under the authority of Statute by the Governor and Privy Council of Canada. The Lieutenant-Governor of the North West Territories for in- stance carries on the government and administration of these Territories partly under the provision of the Statute Law partly under Orders of the Dominion Privy Council. 5. Orders of the Dominion Parliament and Provincial Legislatures. The Dominion Parliament and the Provincial Legislatures conduct their proceedings partly under the authority of statutes, partly under standing and other orders, and partly under customs and usages. Each House has its own standing orders and resolutions, based mainly on the practice that prevails in the English House of Commons. The written rules of the Dominion House of Commons and of the Quebec Legislative Assembly are much more detailed shan those drawn up by the other legislative bodies, but all ‘he Legislative Assemblies agree in adopting as a standing order that “in all unprovided cases the rules, usages and forms of the House of Commons of the United Kingdom of Great Britain and Ireland shall be followed.” 6. Usages. The constitutional usages that always tend 0 come into existence cannot be neglected, whether the effect be to supply the absence of a necessary legal rule or to modify the administration of a law. The Hon. J. S.C. Wurtele, Speaker of the Legislative Assembly of Quebec, has compiled a body of such usages in force in that assembly®, and Mr Burinot, in his valuable work on Parliamentary Practice, refers to many similar usages followed by the Dominion Parliament. 7. Letters Patent and Instructions relating to the office of the Governor-General. The Letters Patent constituting the 1 30th June, 1870. 2 16th May, 1871. 3 26th June, 1873. + Manual of the Legislative Assembly of Quebec,