Two characteristic accomplishments of man would not be his if it were not for his versatile tongue; they are spitting and whistling. The drawing of milk in nursing is an act of the tongue, and the power of its muscles as well as the complete control of its movements is an interesting provision of nature. It is believed by some that the pleasures of the taste sense are confined to such animals as suckle their young. Tongues are rough because the papillæ, which in ordinary skin are hidden beneath the surface, come quite through and stand up like the villi of the digestive canal. The red color of the tongue is due to the fact that the papillæ are so thinly covered that the blood circulating within shows through. [Illustration: FROM COL. CHI. ACAD. SCIENCES. CHICAGO COLORTYPE CO., CHIC. & NEW YORK. PUMA. 1/6 Life-size. COPYRIGHT 1899, NATURE STUDY PUB. CO., CHICAGO.] THE MOUNTAIN LION. This is only one of the names by which the puma (_Felis concolor_) is known in the United States. He has different local names, such as tiger, cougar, catamount and panther, or "painter," as the backwoodsmen entitle him, and silvery lion. The puma ranges the whole of both the Americas from the Straits of Magellan to where the increasing cold in the north of Canada blocks his passage. Like many other large animals, however, the puma has retired before the advance of civilization, and in many of the more thickly populated portions of the United States a straggler, even, is rarely to be found. The haunts of the puma depend upon the nature of the country. In sections well-wooded he decidedly prefers forests to plains; but his favorite spots are edges of forests and plains grown with very high grass. He always selects for his abode such spots as afford some shelter, in the vicinity of rocks which have caverns for secure concealment, and in which to bring forth his young. He spends the day sleeping on trees, in bushes, or in the high grass; in the evening and at night he goes forth to hunt. He sometimes covers great distances in a single night, and sportsmen do not always find him near the place where he struck down his prey.