seas

hollow parts of the large bones of animals. The whale, the skate, and the turtle have no cavities in their bones. cury, and the nearest to the earth of the outer planets. It is of nearly 5,000 miles diameter, and only planet the details of whose surface can be seen from the earth, and presents interesting appearances not yet understood. by the fact that the young are born in the embryo state, and are carried for a time in a peculiar pouch in the abdomen of the mother. The body is elongated and slim, the ears larger than in the weasel, the tail bushy, the legs short, and the feet have five toes, with long sharp claws. Martens live generally in thick woods, and can climb trees with the greatest ease. They feed on rats, mice, birds, and other small animals. They are widely distributed over Europe, Asia, and North America. The sable marten inhabits Si¬ beria, and furnishes the highly valuable sable fur. The pine marten, or American sable, is found in the northern parts of North America, especially in the thick pine woods. It is much hunted for its fur, which is very handsome and highly prized. The best known of the American species is the purple martin. It will readily nest in a bird-box, near houses. kneading, rubbing, and stroking the muscles, used especially for nervous diseases. courage, often used for watching houses. elephant, but larger and with tusks of great length. It was formerly abundant in the United