The Mammoth (_Elephas primigenius_) is known to us only by the fossil remains which have been discovered embedded in the glacial deposits of the Intermediate epoch. The first discovery took place in 1799, under circumstances which are thus recorded in the _Zoologist_. In 1799, a Tungusian fisherman observed, in a bank on the shore of the Frozen Ocean, at the mouth of the river Lena, a shapeless mass almost enveloped in ice, and he was quite unable to determine what it might be. In the following year a larger portion of this mass became visible, but the fisherman was still unable to discover its nature. Towards the end of the following summer, however, one of the tusks and an entire side of a fossilized animal were exposed. But it was not until the fifth year from its discovery, when the ice had melted sooner than usual, that the enormous animal became entirely detached from the bank or cliff in which it was first observed, and came thundering down upon a sand-bank below. In the month of March 1804, the fisherman extracted the tusks, which were nine feet six inches long, and together weighed 360 pounds, and sold them at Yakoutsk for fifty roubles. Two years afterwards, Mr. Adams, a traveller, visited the animal, and found it much mutilated. The Yakoutes residing in the neighbourhood had cut away the flesh to feed their dogs; wild beasts had also eaten a great quantity of it. Nevertheless, with the exception of a fore-leg, the skeleton was entire; the other bones being still held together by ligaments and portions of skin. The head was covered with dried skin; one of the ears was entire, and furnished with a tuft of hairs; the pupil of the eye was still to be distinguished; the brain was in the skull, but somewhat dried; the lower lip had been gnawed by animals, the upper one was entirely gone, and the teeth were consequently exposed; the neck was furnished with a long mane; the skin was covered with long hair and a reddish wool; the portion of skin still remaining was so heavy that two men could scarcely carry it; according to Mr. Adams, more than thirty pounds' weight of hair and wool was collected from the wet sand into which it had been trodden by the white bears while devouring the flesh. This skeleton is now preserved in the Museum of the Academy of St. Petersburg. The height of the creature is about nine feet, and its extreme length to the tip of the tail about sixteen feet. A second carcass was afterwards discovered on the bank of the Asaleïa, which empties its waters into the Frozen Sea, by the traveller Sarytcheff. It was standing upright, and wholly covered with its skin and fur. Finally, a third has been recently found in the same region, and the Museum at Paris possesses a portion of its skin, with a tuft of wool, and some relics of the mane.