"You see the fine effect of the railway signals towards Burslem," said Horrocks, suddenly breaking into loquacity, striding fast and tightening the grip of his elbow the while. "Little green lights and red and white lights, all against the haze. You have an eye for effect, Raut. It's a fine effect. And look at those furnaces of mine, how they rise upon us as we come down the hill. That to the right is my pet--seventy feet of him. I packed him myself, and he's boiled away cheerfully with iron in his guts for five long years. I've a particular fancy for _him_. That line of red there--a lovely bit of warm orange you'd call it, Raut--that's the puddlers' furnaces, and there, in the hot light, three black figures--did you see the white splash of the steam-hammer then?--that's the rolling-mills. Come along! Clang, clatter, how it goes rattling across the floor! Sheet tin, Raut,--amazing stuff. Glass mirrors are not in it when that stuff comes from the mill. And, squelch!--there goes the hammer again. Come along!" He had to stop talking to catch at his breath. His arm twisted into Raut's with benumbing tightness. He had come striding down the black path towards the railway as though he was possessed. Raut had not spoken a word, had simply hung back against Horrocks's pull with all his strength. "I say," he said now, laughing nervously, but with an undernote of snarl in his voice, "why on earth are you nipping my arm off, Horrocks, and dragging me along like this?" At length Horrocks released him. His manner changed again. "Nipping your arm off?" he said. "Sorry. But it's you taught me the trick of walking in that friendly way." "You haven't learnt the refinements of it yet then," said Raut, laughing artificially again. "By Jove! I'm black and blue." Horrocks offered no apology. They stood now near the bottom of the hill, close to the fence that bordered the railway. The ironworks had grown larger and spread out with their approach. They looked up to the blast furnaces now instead of down; the further view of Etruria and Hanley had dropped out of sight with their descent. Before them, by the stile, rose a notice-board, bearing, still dimly visible, the words, "BEWARE OF THE TRAINS," half hidden by splashes of coaly mud. "Fine effects," said Horrocks, waving his arm. "Here comes a train. The puffs of smoke, the orange glare, the round eye of light in front of it, the melodious rattle. Fine effects! But these furnaces of mine used to be finer, before we shoved cones in their throats, and saved the gas." "How?" said Raut. "Cones?" "Cones, my man, cones. I'll show you one nearer. The flames used to flare out of the open throats, great--what is it?--pillars of cloud by day, red and black smoke, and pillars of fire by night. Now we run it off in pipes, and burn it to heat the blast, and the top is shut by a cone. You'll be interested in that cone." "But every now and then," said Raut, "you get a burst of fire and smoke up there."