An enemy so numerous and destructive, would soon render the countries where they appear utterly uninhabitable, did it not fortunately happen, that the same rapacity that animates them to destroy the labours of mankind, at least impels them to destroy each other. After committing incredible devastations, they at last separate into two armies, opposed with deadly hatred, along the coasts of the larger lakes and rivers. The Laplanders, who observe them thus drawn up, instead of considering their mutual animosities as a happy riddance of the most dreadful pest, form ominous prognostics from the manner of their engagements: they consider their combats as a presage of war, and expect an invasion from the Russians or Swedes. The two divisions, however, continue their engagements, and from that time they begin to disappear, nor is it well known what becomes of either the conquerors or the conquered. Some suppose that they rush into the sea, others that they kill themselves, as some are found hanging on the forked branches of trees; and others that they are destroyed by the young spring herbage. But it is most probable, that having consumed the vegetable productions of the country, they then fall upon and devour each other. However this may be, they die in such numbers, that their carcasses have been known to infect the air, and to produce malignant disorders. They seem also to infect the plants which they gnaw, as the cattle often die that feed in the places where they passed. In fine weather, they go in droves into the water, but no sooner does the wind rise, than they are all drowned. As the inhabitants know not from whence they come, it is a vulgar opinion that they fall from the clouds with the rain.[E] [Footnote E: Scheffer's Hist. Lapland, Phil. Trans. &c.] The male is generally larger, and its spots bigger than those of the female. The flesh of the lemings is horrid food, and their skins, though covered with a very beautiful fur, is of too little consistence to be serviceable. THE SEA OTTER. Thevet says, "the Saricovienne, or Sea Otter, is found by the sides of the river Plata; it is an amphibious animal, and lives as much in the water as upon land; it is full as large as a cat, its skin is a very dark grey, nearly black, and is extremely soft; its feet are webbed like those of water fowls; and its flesh is very good, and even delicate."