Now, this is what had been happening to Tom Kitten, and it shows how very unwise it is to go up a chimney in a very old house, where a person does not know his way, and where there are enormous rats. Tom Kitten did not want to be shut up in a cupboard. When he saw that his mother was going to bake, he determined to hide. He looked about for a nice convenient place, and he fixed upon the chimney. The fire had only just been lighted, and it was not hot; but there was a white choky smoke from the green sticks. Tom Kitten got upon the fender and looked up. It was a big old- fashioned fireplace. The chimney itself was wide enough inside for a man to stand up and walk about. So there was plenty of room for a little Tom Cat. He jumped right up into the fireplace, balancing himself upon the iron bar where the kettle hangs. Tom Kitten took another big jump off the bar and landed on a ledge high up inside the chimney, knocking down some soot into the fender. Tom Kitten coughed and choked with the smoke; he could hear the sticks beginning to crackle and burn in the fireplace down below. He made up his mind to climb right to the top, and get out on the slates, and try to catch sparrows. "I cannot go back. If I slipped I might fall in the fire and singe my beautiful tail and my little blue jacket." The chimney was a very big old- fashioned one. It was built in the days when people burnt logs of wood upon the hearth. The chimney stack stood up above the roof like a little stone tower, and the daylight shone down from the top, under the slanting slates that kept out the rain. Tom Kitten was getting very frightened! He climbed up, and up, and up. Then he waded sideways through inches of soot. He was like a little sweep himself. It was most confusing in the dark. One flue seemed to lead into another. There was less smoke, but Tom Kitten felt quite lost. He scrambled up and up; but before he reached the chimney top he came to a place where somebody had loosened a stone in the wall. There were some mutton bones lying about. "This seems funny," said Tom Kitten. "Who has been gnawing bones up here in the chimney? I wish I had never come! And what a funny smell? It is something like mouse, only dreadfully strong. It makes me sneeze," said Tom Kitten. He squeezed through the hole in the wall and dragged himself along a most uncomfortably tight passage where there was scarcely any light. He groped his way carefully for several yards; he was at the back of the skirting board in the attic, where there is a little mark * in the picture. All at once he fell head over heels in the dark, down a hole, and landed on a heap of very dirty rags. When Tom Kitten picked himself up and looked about him, he found himself in a place that he had never seen before, although he had lived all his life in the house. It was a very small stuffy fusty room, with boards, and rafters, and cobwebs, and lath and plaster.