The Guanacos, when they have plenty of the rushy grass, on which they love to feed, never require any drink, but they have no cells in their stomach for the secretion of water: they are particularly active in throwing out their saliva at the least offence. They give very severe blows with their fore feet: and I have often, with the above gentleman, watched them fight with a fury which was at first laughable, tearing large mouthfuls of hair from each other, and at last obliged to be separated, from the injuries they were likely to give and receive. The great enemy of these animals is the Puma, and they fly from him; but Mr. Darwin says he has often known them not only neigh and squeak when men approach, but dance and leap about in the most absurd manner. They are easily caught, for they get quite bewildered, when pursued; but they are much bolder when in captivity. They appear to have favourite spots to which they go to die, and which are perfectly white with their bones; this has been observed close to the river Gallego, and elsewhere. Manufactures from their hair more resemble silk than woolen stuffs, and some of those made of the Alpaca fleece, are quite black, without having been dyed. It has been a matter of surprise to many, that they are not naturalized in this country, as the climate would not be an obstacle to success. The demand, however, for their produce so much, increases, that it is very probable they may at some future time become denizens of our mountainous districts. DEER. The elegant animals included under the name of Deer, afford the highest sport to the hunter, the most precious skins, and delicious food. Considering their size, they are matchless in speed and vigour, and are as beautiful as they are swift. They are spread all over the globe, except Australia, and Central and Southern Africa; their place in the latter continent being supplied by giraffes and antelopes. They leave the higher mountains to goats, live on moderate elevations, but delight most in wide, open countries. The fissures, or what are called lachrymals, exist in most of them; they are clefts below the eyes, which bear the name of tear-ducts, but their use is not yet understood. They would not be so much developed as they are in many, unless they bore strongly upon the animal's economy; but they do not communicate with the nose, nor are they, in any way, connected with respiration. They are certainly in relation with glands, because they secrete a greasy fluid, more abundant at some times than at others, when the edges are much swollen; and the animals often touch objects with them, stretching them wide open, doing so, when they are under excitement of any kind. The muzzles of some deer are nearly flat, and destitute of hair; in others, they are covered with hair, and the upper lip is prehensile.