Just before crossing the bridge on the north side of the river she had caught a glimpse of a great railway terminus. Down below there, rectilinear, scientifically paralleled and squared, the Yard disclosed itself. A system of grey rails beyond words complicated opened out and spread immeasurably. Switches, semaphores, and signal towers stood here and there. A dozen trains, freight and passenger, puffed and steamed, waiting the word to depart. Detached engines hurried in and out of sheds and roundhouses, seeking their trains, or bunted the ponderous freight cars into switches; trundling up and down, clanking, shrieking, their bells filling the air with the clangour of tocsins. Men in visored caps shouted hoarsely, waving their arms or red flags; drays, their big dappled horses, feeding in their nose bags, stood backed up to the open doors of freight cars and received their loads. A train departed roaring. Before midnight it would be leagues away boring through the Great Northwest, carrying Trade⁠—the life blood of nations⁠—into communities of which Laura had never heard. Another train, reeking with fatigue, the air brakes screaming, arrived and halted, debouching a flood of passengers, business men, bringing Trade⁠—a galvanising elixir⁠—from the very ends and corners of the continent.