Wagons, carts and hand-carts

22. Iron and steel, in rails for railroads and other similar uses, and tructural iron and steel for bridges and building purposes.

23. Wire, for fences, with or without barbs, clamps, posts, clips and other accessories, of wire not less than three lines in diameter.

24. Machinery of ail kinds for agricultural purposes, arts and trades, and parts of such machinery.