It seems that ferrets, if they once get hold of your thumb, never let go--_not never_--and that you have to force their jaws open with a penholder; also ferrets exhibit a marked preference for thumbs. All this information Tommy conveyed without drawing a breath. The Headmaster said, "Quite so, my boy, quite so. But don't you know it is extremely reprehensible conduct to bring animals to school in your pocket?" Well, you see, that is how Tommy's mother talks to him, so he knew what to do, and, looking up into the Headmaster's face with that wistful look of his, he imparted the deep secret that he had a tortoise. Tortoises, the Headmaster learnt, had a way of getting lost among the cabbages, but, if you wanted to prevent them from straying, all you had to do was to turn them over on their backs and put a piece of brown paper over them for their feet to play with. Also they were stuck fast in their shells, because Tommy had tried. A boy had told Tommy that tortoises laid eggs, but although Tommy had showed his tortoise a hen's egg and then put the tortoise in a nice new nest the tortoise had taken no step in the matter. However, Tommy promised never to bring any more animals to school and to express his sorrow to Miss Price. And he was richer by sixpence when the interview closed. At parting, Tommy offered to lend the Headmaster his tortoise for a week, and told him that, if he stood for a whole hour on its back, it wouldn't hurt it, because Tommy had trained it; also it never crawled out of your pocket. Tommy apologised to Miss Price for bringing the white rats to school--they weren't white rats really, not to look at; they were rather piebald through constant association with ink. Also he brought an apple and showed her how, by holding it a certain way whilst eating it, she would miss the bad part. In further sign of amity he showed her his knife, and especially that instrument in it which was used for removing stones from horses' hoofs. Not that Tommy had removed many stones from horses' hoofs, not very many, but if you had a tooth that was loose it was very helpful. Miss Price gave him a new threepenny bit, and Tommy tried hard to please her in arithmetic by reducing inches to pounds, shillings and pence. With nine-pence in his pocket Tommy felt uneasy. It was a question between a lop-eared rabbit and a mouth-organ. A lop-eared rabbit, that is to say a proper one, cost two shillings; for nine-pence it was probable that you could only get a rabbit which would lop with one ear. Besides, a lop-eared rabbit meant a hutch, and he had already used the cover of his mother's sewing-machine for the piebald rats. On the other hand, you could get a mouth-organ with a bell on it for nine-pence; he knew. It was a splendid instrument! Tommy took it to bed with him and put it under his pillow, and when his mother came to see that he was all right at night his hand was clutched round it as he slept content.