There seemed no limit to his inventive powers. He made a locomotive and then a steamboat, perfect in every part, even to the minutest, using nothing but his knife, hammer, and a small chisel. He constructed a clock with his jack-knife, which kept perfect time, and the articles which he made were wonderfully stared at at fairs, and in show windows, while Johnny modestly pegged away at some new idea. He became a master of the art of telegraphy without assistance from any one using merely a common school philosophy with which to acquire the alphabet.