The word }railway~ includes the land upon which any railway is made or authorised to be made, and all buildings and erections of every kind thereon, and all land taken, purchased, or acquired for railway purposes; and, except where inconsistent with the context, such word, when used in this Act, also includes all works, wharves, and jetties the property of the Crown, whether of a permanent or a temporary nature, used for the purposes of or in connection with such railway, and all materials and things of which such railway, buildings, erections, works, wharves, or jetties is or are composed, or which are being used for the purposes thereof, and are erected, placed, or laid upon any such land.