There is another strong instinct which the Marten evinces even when tamed. It has an implacable hostility to cats, and lets slip no opportunity of springing upon them and giving them a mortal wound. In the forests, diminutive as it is in comparison, it battles stoutly with the wild cat; and we shall venture to quote from "The British Naturalist" an account of one of these battles, as from an eye witness. "In the year 1805, a gentleman, on whose veracity we can depend, witnessed one of those combats in the Morven district of Argyleshire. In crossing the mountains from Loch Sunart southward, he passed along the bank of a very deep wooded dell, the hollow of which, though it occasionally showed green patches through trees and coppice, was one hundred and fifty or two hundred feet from the top. The dell is of difficult access, and contains nothing that would compensate the labor, and thus it is abandoned to wild animals, and, among others, to the Marten, which, though the skin fetches a high price, is not so much hunted there as in more open places; because, though they might succeed in shooting it from the heights above, they could not be sure of removing the body. Thus it is left to contend with the mountain cat for the sovereignty of this particular dell, and both are safe, except when they approach the farm-house at the bottom of the hill. The contest then lasted for more than a half an hour, and both combatants, were too intent on each other's destruction to shun or fear observation. At last, however, the Marten succeeded in falling upon the right side of the cat's neck, and jerking his long body over her, so as to be out of the reach of her claws; when, after a good deal of squeaking and struggling, by which the enemy could not be shaken off, the martial achievements of puss were ended in the field of glory." Next comes a Ruffed Lemur, as it is called from the half-circle of white hair, which you see on each side of its face. Notice, too, Charley, the big patches of white on its back and sides, and its long bushy tail, longer even than its whole body. [Illustration: RUFFED LEMUR.] "It is a native of Madagascar, which, you see on your map, is an island south-east of Africa. It lives in the thick woods, and sleeps all day, but when night comes, it starts forth after its food, which consists of fruits, insects, and small birds. It is a little bigger, you see, than a common cat. The Lemur, of which there are several varieties, is a good deal like a monkey in his habits and some of them look like monkeys.