But the work was new and strange to him. He did not like it. He did not think, at first, that he ever could like it. It was so dark in the mines, so desolate, so lonely. He grew accustomed to the place, however, as the days went by, and then he began not to mind it so much after all. He had more responsibility here, but the work was not so tiresome and monotonous as it had been in the screen-room, and he could be in motion all the time. He went down the shaft every morning with a load of miners and laborers, carrying his whip and his dinner-pail, and a lighted lamp fastened to the front of his cap. When he reached the bottom of the shaft he hurried to the inside plane, and up the slope to the stables to get his mule. The mule's name was Jasper. Nobody knew why he had been named Jasper, but when Ralph called him by that name he always came to him. He was a very intelligent animal, but he had an exceedingly bad habit of kicking. It was Ralph's duty to take the mule from the stable, to fasten him to a trip of empty mine cars, and to make him draw them to the little cluster of chambers at the end of the branch that turned off from the upper-level heading. This was the farthest point from the shaft in the entire mine. The distance from the head of the plane alone was more than a mile, and it was from the head of the plane that Ralph took the cars. When he reached the end of his route he left one car of his trip at the foot of each chamber in which it was needed, gathered together into a new trip the loaded cars that had been pushed down to the main track for him, and started back with them to the head of the plane.