The beaver is the only fur animal in these latitudes that does not change its colour in the course of the year. This is probably owing to the circumstance, that in winter it dwells wholly in the water, thus enjoying a comparatively equable temperature. In the river Obi, at Beresov, the water does not usually freeze below the depth of four feet eight inches, and the beaver always has two entrances to his dwelling, one high on the bank above the stream, the other below the freezing limit. The architectural and wood-cutting habits of the animal are the same here as in America; but two assertions, new to Mr Erman, were made respecting it by the Beresov hunters. He was assured that "among beavers, as with bees and men, there are distinctions of ranks; each chief keeping a number of labourers, the toils of which he oversees and directs without taking part in them; and, again, it was stated that the contents of the castoreum bags depend on the moon." It was impossible to verify the veracity of these two statements. As regards the moon's influence, however, there is ground for a suspicion that its advantages are rather felt by the hunter, than essential to the virtues of the drug. Full moon is maintained, both by Ostyaks and Russians, to be the propitious time. The most northern tribe of Ostyaks, who dwell between the rivers Obi and Yenisei, surpass their southern neighbours in venatorial skill, as they, in their turn, are surpassed by the Samoyedes, who live in the northernmost regions of Siberia. The men of the Yenisei kill wolves, which, on account of their long soft hair, are reckoned greatly superior to the forest and steppe wolves of middle Siberia. They are also famed for their dexterity in killing and capturing reindeer. "Tying leathern cords between the tops of the antlers of their tame deer, they turn the animals loose, one by one, in the neighbourhood of a wild herd: these do not fail to attack the strangers, and their antlers becoming entangled in the cords during the contest, they are held fast by the tame deer till the men arrive. These Ostyaks know also how to plant spring-bows, which send the arrow against the animal's breast." But the Samoyedes, besides these ordinary artifices, have other and ingenious ways, peculiar to themselves, of ensnaring and slaying the brute creation, by putting themselves as much as possible on an equality with the animals pursued, going on all-fours, and imitating them in voice and clothing. The Polar bear is a common victim to their cunning devices, and even to their open attacks; for their intimate acquaintance with the formidable beast makes them regard him as an easy prey. "The Samoyedes assert that the white bear far exceeds the black bear in ferocity and strength, whilst fully equal to it in cunning; yet, owing to his unwieldiness, they encounter it without fear, and always reckon on victory as certain. A man will often go singly against a Polar bear, eight feet long, without any