Luc pushed a door open, and made his escape into the open air. The night was damply warm, and he drew a long breath, feeling refreshed by the wind which was blowing. When he raised his eyes he was unable to distinguish a single star beyond the wild rush of the clouds. But the lamp globes shining here and there in the yard replaced the hidden moon, and again he saw the chimneys rising amidst lurid smoke, and a coal-smirched sky, across which upon every side, forming as it were some gigantic cobweb, flew all the wires which transmitted electric power. The machines which produced it, two machines of great beauty, were working close by in some new buildings. There were also some works for making bricks and crucibles of refractory clay; there was a carpenter's shop for model-making and packing, and numerous warehouses for commercial steel and iron. And Luc, after losing himself for a time in that little town, well pleased when he came upon deserted stretches, black peaceful nooks where he seemed to revive to life, suddenly found himself once more inside the inferno. On looking around him he perceived that he was again in the gallery containing the furnaces for the crucibles. Another operation was now being executed there. Seventy crucibles were being removed at the same moment for some big piece of casting which was to weigh over three thousand nine hundred pounds. The mould with its funnel was waiting in readiness in the pit, in the neighbouring hall. And the procession was swiftly organised, all the helpers of the various squads took part in it, two men for each crucible, which they raised with pincers and carried off with long and easy strides. Another, then another, then another, the whole seventy crucibles passed along in a dazzling procession. One might have thought it some ballet scene, in which vague dancers with light and shadowy feet passed two-by-two carrying huge Venetian lanterns, orange-red in hue. And the marvellous part of it all was the extraordinary rapidity, the perfect assurance of the well-regulated movements in which the bearers were seen gambolling, as it were, in the midst of fire, hastening up, elbowing one another, marching off and coming back, juggling all the while with fusing stars. In less than three minutes the seventy crucibles were emptied into the mould, whence arose a sheaf of gold, a great spreading bouquet of sparks. When Luc at last returned to the hall containing the puddling furnaces and the rollers, after a good half-hour's promenade, he found Bonnaire finishing his work. 'I will be with you in a moment, monsieur,' said the puddler.