We were lately shown a curiosity in the shape of a sewing machine entirely of wood. It was whittled out of ordinary pine with an ordinary jack-knife by an ordinary boy—no, not an ordinary boy; it was the handiwork of a deaf and dumb boy who resides at Massachusetts. A machine was left at the house of the boy by an agent, and the lad, with considerable ingenuity, made a counterpart of the machine, and did it wholly with a jack-knife.