Their fore-limbs, though reduced to mere paddles, have all the bones, joints, and even most of the muscles, nerves, and arteries of the human arm and hand. The rudiments of hind-legs are found buried deep in the interior of the animal, and in the young whales bristles about the chin and upper lip give evidence that the whales have once been covered with hair like other mammals. The blubber is also arranged by nature as a means for keeping their bodies warm. True fishes are cold-blooded animals, and not sensible to differences of temperature. All these different facts make people think that at some very remote period whales were land animals. EDITOR. THE GREAT ROUND WORLD AND THE PEOPLE WHO LIVED ON IT. CHAPTER I. There was once a man who lived with his family on a large farm in a fine valley sheltered by high mountains. The farm had need to be large, for the family was numerous. There were the old man's children and grandchildren, and these again had sons and daughters, and they all lived together, in many huts, which made a village or town. Of course they all were more or less nearly related to one another, and all called the old man father. He was their head and chief--their king, and his word, his commands, were their only laws. He was assisted and advised by the oldest and wisest among the men, who met regularly to discuss the family's affairs, and formed a sort of senate or council of elders. When great things had to be talked over and settled, things which interested everybody alike, the whole family was called together, and had a mass-meeting after working hours. The family knew nothing of the great round world but their own farm. In fact, they did not care whether there was any world outside of their mountains, because they had no need of any. All they wanted, for food, clothing, or shelter, they found or raised on their own land. They had pure running water to drink and to fish in; woods to hunt in and cut down for fuel and building timber; meadows for the flocks and herds which gave them milk and flesh, hides and wool; broad fields stretched under the sun, green with the tender sprouting crops or golden with the ripening harvest.