It is scarcely within the power of words to describe the savage desolation of the regions into which the line and its constructors plunged. A smooth ocean of bright-coloured sand spread far and wide to distant horizons. The tropical sun beat with senseless perseverance upon the level surface until it could scarcely be touched with a naked hand, and the filmy air glittered and shimmered as over a furnace. Here and there huge masses of crumbling rock rose from the plain, like islands of cinders in a sea of fire. Alone in this vast expanse stood Railhead--a canvas town of 2,500 inhabitants, complete with station, stores, post-office, telegraph-office, and canteen, and only connected with the living world of men and ideas by two parallel iron streaks, three feet six inches apart, growing dim and narrower in a long perspective until they were twisted and blurred by the mirage and vanished in the indefinite distance. Every morning in the remote nothingness there appeared a black speck growing larger and clearer, until with a whistle and a welcome clatter, amid the aching silence of ages, the 'material' train arrived, carrying its own water and 2,500 yards of rails, sleepers, and accessories. At noon came another speck, developing in a similar manner into a supply train, also carrying its own water, food and water for the half-battalion of the escort and the 2,000 artificers and platelayers, and the letters, newspapers, sausages, jam, whisky, soda-water, and cigarettes which enable the Briton to conquer the world without discomfort. And presently the empty trains would depart, reversing the process of their arrival, and vanishing gradually along a line which appeared at last to turn up into the air and run at a tangent into an unreal world.