_Musk-Rat._――This animal is closely allied in form and habits to the beaver, and is found in the same parts of America as that animal, from thirty to sixty-nine or seventy degrees of latitude. But it is more familiar in its habits, as it is to be found only a short distance from large towns. The musk-rat is a watchful, but not a very shy animal. It may be frequently seen sitting on the shores of small muddy islands, not easily to be distinguished from a piece of earth, till, on the approach of danger, it suddenly plunges into the water. It forms burrows on the banks of streams and ponds, the entrance to which is in deep water. These burrows extend to great distances, and do extensive injury to the farms, by letting in the water upon the land. In some situations, these animals build houses of a conical form, resembling those of the beaver, formed of mud, grass and reeds, plastered together. They feed upon the roots and tender shoots of aquatic plants and on the leaves of grasses. They are excellent swimmers, dive well, and can remain for a long time under water. It is rare to have an opportunity of seeing the animal during the day, as it then lies concealed in its burrow, and it is not till night, that it issues forth for food or recreation. It does not, like the beaver, lay up a store of provision for the winter; but it builds a new habitation every season. This animal is common in the Atlantic states, and its fur being valuable for hats, it is much hunted. The Indians kill them by spearing them through the walls of their houses. Between four and five thousand skins are annually imported into Great Britain from North America. _The American Badger_, as compared with the European, is smaller and lighter, with different markings on its fur, and with a head less sharp towards the nose. It frequents the prairies and sand plains at the base of the Rocky Mountains, as far north as latitude fifty-eight degrees. It abounds on the plains watered by the Missouri. Timid and slow, the badger, on being pursued, takes to the earth like a mole, and makes his way with great rapidity. It is caught in spring, when the ground is frozen, by filling its hole with water, when the tenant is obliged to come out.