As they groped their way slowly along, their feet splashed into pools of yellow clayey water at the sides of the drive, or stumbled over the rough ground and rugged rails laid down for the trollies. All along the gallery, at regular intervals, were posts of stringy bark in a vertical position, while beams of the same were laid horizontally across the top, but so low that Vandeloup had to stoop constantly to prevent himself knocking his head against their irregular projections. Clinging to these side posts were masses of white fungus, which the miners use to remove discolorations from their hands, and from the roof also it hung like great drifts of snow, agitated with every breath of wind as the keen air, damped and chilled by the underground darkness, rushed past them. Every now and then they would hear a faint rumble in the distance, and Archie would drag his companion to one side while a trolly laden with white, wet-looking wash, and impelled by a runner, would roll past with a roaring and grinding of wheels. At intervals on each side of the main drive black chasms appeared, which Archie informed his companion were drives put in to test the wash, and as these smaller galleries continued branching off, Vandeloup thought the whole mine resembled nothing so much as a herring-bone. Being accustomed to the darkness and knowing every inch of the way, the manager moved forward rapidly, and sometimes Vandeloup lagged so far behind that all he could see of his guide was the candle he carried, shining like a pale yellow star in the pitchy darkness. At last McIntosh went into one of the side galleries, and going up an iron ladder fixed to the side of the wall, they came to a second gallery thirty feet above the other, and branching off at right angles. This was where the wash was to be found, for, as Archie informed Vandeloup, the main drives of a mine were always put down thirty or forty feet below the wash, and then they could work up to the higher levels, the reason of this being that the leads had a downward tendency, and it was necessary for the main drive to be sunk below, as before mentioned, in order to get the proper levels and judge the gutters correctly. At the top of the ladder they found some empty trucks which had delivered their burden into a kind of shoot, through which it fell to the lower level, and there another truck was waiting to take it to the main shaft, from whence it went up to the puddlers. Archie made Vandeloup get into one of these trucks, and though they were all wet and covered with clay, he was glad to do so, and be smoothly carried along, instead of stumbling over the rails and splashing among the pools of water. Every now and then as they went along there would be a gush of water from the dripping walls, which was taken along in pipes to the main chamber, and from thence pumped out of the mine by a powerful pump, worked by a beam engine, by which means the mine was kept dry.