“Are you the driver of this cab?” he asked. “Yes, sir” said Diamond, showing his badge, of which, he was proud. “You're the youngest cabman I ever saw. How am I to know you won't break all my bones?” “I would rather break all my own,” said Diamond. “But if you're afraid, never mind me; I shall soon get another fare.” “I'll risk it,” said the gentleman; and, opening the door himself, he jumped in. He was going a good distance, and soon found that Diamond got him over the ground well. Now when Diamond had only to go straight ahead, and had not to mind so much what he was about, his thoughts always turned to the riddle Mr. Raymond had set him; and this gentleman looked so clever that he fancied he must be able to read it for him. He had given up all hope of finding it out for himself, and he could not plague his father about it when he was ill. He had thought of the answer himself, but fancied it could not be the right one, for to see how it all fitted required some knowledge of physiology. So, when he reached the end of his journey, he got down very quickly, and with his head just looking in at the window, said, as the gentleman gathered his gloves and newspapers: “Please, sir, can you tell me the meaning of a riddle?” “You must tell me the riddle first,” answered the gentleman, amused. Diamond repeated the riddle. “Oh! that's easy enough,” he returned. “It's a tree.” “Well, it ain't got no mouth, sure enough; but how then does it eat all day long?” “It sucks in its food through the tiniest holes in its leaves,” he answered. “Its breath is its food. And it can't do it except in the daylight.” “Thank you, sir, thank you,” returned Diamond. “I'm sorry I couldn't find it out myself; Mr. Raymond would have been better pleased with me.” “But you needn't tell him any one told you.” Diamond gave him a stare which came from the very back of the north wind, where that kind of thing is unknown. “That would be cheating,” he said at last. “Ain't you a cabby, then?” “Cabbies don't cheat.” “Don't they? I am of a different opinion.” “I'm sure my father don't.” “What's your fare, young innocent?” “Well, I think the distance is a good deal over three miles--that's two shillings. Only father says sixpence a mile is too little, though we can't ask for more.” “You're a deep one. But I think you're wrong. It's over four miles--not much, but it is.” “Then that's half-a-crown,” said Diamond. “Well, here's three shillings. Will that do?” “Thank you kindly, sir. I'll tell my father how good you were to me--first to tell me my riddle, then to put me right about the distance, and then to give me sixpence over. It'll help father to get well again, it will.” “I hope it may, my man. I shouldn't wonder if you're as good as you look, after all.”