The train was at this time engineless, but presently a railway "flier," painted a glowing vermilion, slid modestly down and took its place at the head. The guard walked along the platform, and decisively closed each door. He wore a dark blue uniform thoroughly decorated with silver braid in the guise of leaves. The way of him gave to this business the importance of a ceremony. Meanwhile the fireman had climbed down from the cab and raised his hand, ready to transfer a signal to the driver, who stood looking at his watch. In the interval there had something progressed in the large signal box that stands guard at Euston. This high house contains many levers, standing in thick, shining ranks. It perfectly resembles an organ in some great church, if it were not that these rows of numbered and indexed handles typify something more acutely human than does a keyboard. It requires four men to play this organ-like thing, and the strains never cease. Night and day, day and night, these four men are walking to and fro, from this lever to that lever, and under their hands the great machine raises its endless hymn of a world at work, the fall and rise of signals and the clicking swing of switches. And so as the vermilion engine stood waiting and looking from the shadow of the curve-roofed station, a man in the signal house had played the notes that informed the engine of its freedom. The driver saw the fall of those proper semaphores which gave him liberty to speak to his steel friend. A certain combination in the economy of the London and Northwestern Railway, a combination which had spread from the men who sweep out the carriages through innumerable minds to the general manager himself, had resulted in the law that the vermilion engine, with its long string of white and bottle-green coaches, was to start forthwith toward Scotland.