Regulations for the leasing and administration of lands containing limestone, granite, slate, marble, gypsum, marl, gravel, sand, clay, or any building stone, in the provinces of Manitoba, Saskatchewan and Alberta, the Northwest Territories, within twenty miles on either side of the main line of the Canadian Pacific Railway, in the province of British Columbia, in the tract of three and one half (3 1/2) million acres acquired by the government of the Dominion from the province of British Columbi

by Canada