Houses of wood or iron, complète or in parts

15. Fire-bricks, lime, cernent, shingles and tiles of clay or glass for roofing, and construction of buildings.

16. Marble in slabs, columns, cornices, door and window frames and fountains ; and dressed or undressed marble for buildings.

17. Piping of clay, glazed or unglazed, for aqueducts and sewers.

18. Wire, plain or barbed, for fences, with hooks and staples for same.

19. Printed books, bound or unbound; printed music; maps, charts and globes.

20. Materials for the construction and equipment of railways.