The female brings forth in May a single calf, rarely two. This is small and weak, but after a few days it follows the mother, who suckles her young but a short time, as it is soon able to seek and to find its food. The reindeer gives very little milk--at the very utmost, after the young has been weaned, a bottleful daily; but the quality is excellent, for it is uncommonly thick and nutritious. It consists almost entirely of cream, so that a great deal of water can be added before it becomes inferior to the best cow-milk. Its taste is excellent, but the butter made from it is rancid, and hardly to be eaten, while the cheese is very good. The only food of the reindeer during winter consists of moss, and the most surprising circumstance in his history is the instinct, or the extraordinary olfactory powers, whereby he is enabled to discover it when hidden beneath the snow. However deep the _Lichen rangiferinus_ may be buried, the animal is aware of its presence the moment he comes to the spot, and this kind of food is never so agreeable to him as when he digs for it himself. In his manner of doing this he is remarkably adroit. Having first ascertained, by thrusting his muzzle into the snow, whether the moss lies below or not, he begins making a hole with his fore feet, and continues working until at length he uncovers the lichen. No instance has ever occurred of a reindeer making such a cavity without discovering the moss he seeks. In summer their food is of a different nature; they are then pastured upon green herbs or the leaves of trees. Judging from the lichen’s appearance in the hot months, when it is dry and brittle, one might easily wonder that so large a quadruped as the reindeer should make it his favorite food and fatten upon it; but toward the month of September the lichen becomes soft, tender, and damp, with a taste like wheat-bran. In this state its luxuriant and flowery ramifications somewhat resemble the leaves of endive, and are as white as snow. Though domesticated since time immemorial, the reindeer has only partly been brought under the yoke of man, and wanders in large wild herds both in the North American wastes, where it has never yet been reduced to servitude, and in the forests and tundras of the Old World.