JOHN’s Way. 153 put a few of his screws in the sand, and they would gradually heat there. He watched them, and as fast as they became blue on the little spot that he had brightened, he would take them out, and dip them in cold water. “While he was at the emery-wheel, brightening his screws, Mr. Naylor came to look at them; and after examining the wheel, said he wanted to have a wheel to revolve faster, and he asked John if he could plan the machinery to make one revolve three hundred times in a second. “John said he did not think he could. ““« Why, you seem to be something of a scholar, John. Have you ever studied ge- ometry ?’ said Mr. Naylor. “No, sir,’ said John; ‘but I wantto study it very much.’ ” <7 thought it was likely,’ said Mr. Nay- lor. ‘Well, there is to be an evening school for teaching geometry in the village,—to begin next week,—and if you wish, you may go.’ . “John liked this plan very much. He was very diligent and attentive to his geometry, and learned very fast, and the Knowledge of it, that he acquired, helped