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14. Machines, including steam-engines, and those of ail other kinds, and parts of the same, implements and tools for agricultural, mining, manufacturing, industrial and scientitîc purposes, including carts, wagons, handcarts and wheelbarrows, and parts of the same.

15. Material for the construction and équipaient of rail-ways.

16. Iron, cast and wrought, and steel, in pigs, bars, rods, plates, beams, rafters and other similar articles for the construction of buildings, and in wire, nails, screws and pipes.

17. Zinc, galvanized and corrugated iron, tin and lead in sheets, asbestos, tar paper, tiles, slate and other material for roofîng.