The door was now becoming red-hot, lighting up the legs of both of them with a violet gleam. But neither felt the scorching heat in the current of icy air that enveloped them. The fireman, at a sign from his chief, had just raised the rod of the ash-pan which added to the draught. The hand of the manometer at present marked ten atmospheres, and La Lison was exerting all the power it possessed. At one moment, perceiving the water in the steam-gauge sink, the driver had to turn the injection-cock, although by doing so he diminished the pressure. Nevertheless, it rose again, the engine snorted and spat like an animal over-ridden, making jumps and efforts fit to convey the idea that it would suddenly crack some of its component pieces. And he treated La Lison roughly, like a woman who has grown old and lost her strength, ceasing to feel the same tenderness for it as formerly. "The lazy thing will never get to the top," said he between his set teeth--he who never uttered a word on the journey. Pecqueux, in his drowsiness, looked at him in astonishment. What had he got now against La Lison? Was it not still the same brave, obedient locomotive, starting so readily that it was a pleasure to set it in motion; and gifted with such excellent vaporisation that it economised a tenth part of its coal between Paris and Havre? When an engine had slide valves like this one, so perfectly regulated, cutting the steam so miraculously, they could overlook all imperfections, as in the case of a capricious, but steady and economical housewife. No doubt La Lison took too much grease, but what of that? They would grease it, and there was an end of the matter. Just at that moment, Jacques, in exasperation, repeated: "It'll never reach the top, unless it's greased!" And he did what he had not done thrice in his life. He took the oil-can to grease the engine as it went along. Climbing over the rail, he got on the frame-plate beside the boiler, which he followed to the end. It was a most perilous undertaking. His feet slipped on the narrow strip of iron, wet with snow. He was blinded, and the terrible wind threatened to sweep him away like a straw. La Lison, with this man clinging to its side, continued its panting course in the darkness, cutting for itself a deep trench in the immense white sheet covering the ground. The engine shook him, but bore him along. On attaining the cross-piece in front, he held on to the rail with one hand, and, stooping down before the oil-box of the cylinder on the right, experienced the greatest difficulty in filling it. Then he had to go round to the other side, like a crawling insect, to grease the cylinder on the left. And when he got back to his post, he was exhausted and deadly pale, having felt himself face to face with death. "Vile brute!" he murmured.