A private in a company of engineers gained a certain reputation for mending his comrades' watches. His reputation reached his captain's ears, who one day said to him, "Jones, I hear you are clever at watch-mending, here take this one of mine and see what you can make of it." Some few days after, Jones took back the watch. "Well, Jones, how much do I owe you?" "Three shillings," was the reply. "Well, here you are, and thank you," said the captain. "Oh! I forgot," said Jones, "here are three wheels which I had over."