One day, about this time, when we are looking at the tadpoles in the jar, where it stands on the long bookcase in the study, the Imp says, "I say, Ogre, isn't it time we saw the blood moving?" And then I bring a little microscope, all bright gilt, out of its case in the cupboard. We catch one of the little tadpoles, and lay it on a slip of glass, and look at it down the long tube of the microscope. The tail of it looks huge instead of tiny, and all over it, inside it, we can see little pale blobs running to and fro; and those are the tadpole's blood. The blobs look like wee fishes swimming in narrow canals all over the tadpole's tail. When the Elf has looked as well as the Imp, we let it slip back from the slip of glass into the bowl, and see it flap away, as merrily as before. The tadpole grows fast now, and soon two little hindlegs sprout out, and the forelegs follow them, and the little creature looks like a frog with a tail, and a very big tail at that. And then the tail begins to shrink, and every day the tadpole is more like a frog, and more like a frog, until, at last, the tail goes altogether, and there in the bell jar is a baby froglet, who is quite ready to crawl out of the water on a floating piece of cork, and begin life as a land and water gentleman instead of a mere fish. That is the way the frog young ones grow up. Their mother does not bother about them at all. They have to do everything for themselves. And they do it very energetically. So that as soon as they begin to turn into frogs, we take them back to the pond and let them go; for if we kept them we should soon have them hopping all over the house. A house is no place for a little wet frog. He wants a pond or a muddy brook, and plenty of duckweed to hide under. The duckweed in the pond is stirred by other things besides frogs, as I have told you already. The Elf and the Imp would be very angry with me, if I did not tell you all about the newts. For they are the most exciting of all the watery things that are not simple fishes. They are like water lizards, or like tiny water dragons, with four legs and a waving tail.