226 DIVISION OF LEGISLATIVE POWER. falling within these classes of subjects exists in each Legis- lature, and to define in the particular case before them the limits of their respective powers. It could not have been the intention that a conflict should exist; and in order to prevent such a result the two sections must be read together, and the language of the one interpreted, and where necessary modified, by that of the other. In this way it may in most cases be found possible to arrive at a reasonable and prac- ticable construction of the language of the sections so as to reconcile the respective powers they contain and give effect to all of them. In performing this difficult duty it will be a wise course for those on whom it is thrown to decide each case which arises as best they can, without entering more largely upon the interpretation of the statute than is necessary for the decision of the particular question in hand.” Before attempting to arrange or discuss the various legislative powers, attention may be called to some general principles that ought to be borne in mind, and which are suggested either by the Act itself or by judicial decisions of the Judicial Committee and of the Canadian Courts. 1. Though the 91st section of the Act professes to give “ exclusive ” legislative authority to the Dominion Parlia- ment on the matters specified, such authority is “exclusive” only of provincial Legislatures, and does not affect the supreme legislative power possessed by the Imperial Parliament over all the dominions of the Crown. In other words, the Imperial Parliament still retains co-ordinate legislative power in all matters assigned to either the Dominion or the provincial Legislatures’. oni 2. By the Imperial Act 28 and 29 Vie. c. 63, intituled and “An Act to remove Doubts as to the validity of Colonial a Laws,” it is enacted that any Colonial law “repugnant to tion. the provisions of any Act of Parliament extending to the I See for 8 fuller discussion of this point post ¢. xxi.