After these the animals. Round Eye the dormouse goes to sleep about November. He builds a nest of leaves and grass all around himself, and, if the winter is cold, sleeps straight away into April. If the winter is warm, however, he may wake up and eat a little food, and if he is a wise little mouse, as he usually is, he keeps a little store of nuts and seeds at hand in case he _does_ wake up. Prickles the hedge-pig does much the same. He has a nest which is even warmer, for, besides the leaves and grass which make the round of it, he rolls his spines into anything soft which will stick to them and so has a nice warm blanket next to his skin. Once he has dropped off to sleep he stays asleep till the spring comes. I don't think he ever wakes up like the dormouse, or ever makes a store of food. [Illustration: PRICKLES THE HEDGE-PIG] The only other animals which sleep the winter through in this country are the bats, and some of them sleep even longer than the dormouse and the hedge-pig; indeed, they are only awake for three or four months in the year. Sometimes there are crowds of them sleeping together in old caves, and tree trunks, and places like that, and it may be that they half wake up and talk to each other to pass away the time. Indeed, if you know their hole and can put your ear close to it, you can sometimes hear them talking and squabbling--faint little squabblings like the sound of a kettle simmering on the hob when you can just hear the tiny bubbles hitting each other and bursting with bad temper. [Illustration: THE HEDGE-PIG IN HIS WINTER SLEEP He is not so tightly coiled as when he shuts up to defend himself] When bats are flying about and hunting for moths they often squeak for joy, and then their voice is quite different. It is so high that some people cannot hear it at all; but you can make a noise just like it by striking two pennies sharply together, and if you can hear that being done when you are several yards away from the person who is doing it, you ought to be able to hear a bat squeak too. [Illustration: THE LESSER HORSESHOE BAT IN HIS WINTER SLEEP He is hanging head-downwards and is completely shut up in his own wings, which, you see, are beautifully folded] You have to watch bats very closely before you can tell one kind from another, and I expect some of you will be surprised to hear that there are more different kinds of bats in England than there are of any other kinds of animals. There are, at least, twelve different kinds of English bats, and, as bats now and then seem to get blown over the sea from France, or be brought in the rigging of ships, quite a strange foreign bat may turn up sometimes. THE BLUNDERS OF BARTIMÆUS (MICHAELMAS DAY) [Illustration: BARTIMÆUS]