The independent trapper equips himself with a horse and two or three mules--the one for the saddle, the others for his packs--and a certain number of traps, which he carries in a leather bag, with ammunition, a few pounds of tobacco, and dressed deerskins for his mocassins and repairing his garments. His costume is a hunting-shirt of dressed buckskin, ornamented with long fringes; pantaloons of the same material, decorated with porcupine quills and long fringes down the outside of the leg. He has mocassins on his feet, and a flexible felt hat on his head. Over his left shoulder and under his right arm hang his powder-horn and bullet-pouch, with flint, steel, and other articles, in a bag. A belt round the waist secures a large knife in a sheath of buffalo hide to a steel chain, as also a case of buckskin, containing a whetstone. In his belt is also stuck a tomahawk, a pipe-holder hangs round his neck, and a long heavy rifle is slung over his shoulder. Arrived on the hunting-ground, as soon as the ice has broken up he follows the creeks and streams, keeping a lookout for the signs of beavers. As soon as he discovers one, he sets his trap, secured to a chain fastened to a stake or tree, baiting it with the tempting castoreum. He is ever on the watch for the neighbourhood of Indians, who try to outwit him, though generally in vain, to steal his traps and beavers. His eye surveys the surrounding country, and instantly detects any sign of his foes. A leaf turned down, the slightly pressed grass, the uneasiness of the wild animals, the flight of birds, all tell him that other human beings are in the neighbourhood. Sometimes, after he has set his traps and is returning to his camp, the wily Indian who has been watching follows, and a home-drawn arrow, shot within a few feet, never fails to bring the hapless victim to the ground. For one white scalp, however, that dangles in the smoke of an Indian's lodge, a dozen black ones surround the camp-fires of the trappers' rendezvous. Here, after the hunt, from all quarters the hardy trappers bring in their packs of beaver to meet the purchasers, sometimes to the value of a thousand dollars each. The traders sell their goods at enormous profits; and the thoughtless trapper, indulging in the fire-water from which he has long abstained, is too often induced to gamble away the gold for which he has risked life and gone through so many hardships. When all is gone, he gets credit for another equipment, and sets off alone, often to return and repeat the same process, although the profits of one or two successful hunts would enable him to stock a farm and live among civilised men. Wonders of Nature.--Mammoth Cave of Kentucky. There are many other wonders of Nature in different parts of North America well worthy of more notice than we can give them. The most remarkable, perhaps, is the Mammoth Cave of Kentucky. The entrance to it is situated near Green River, midway between Louisville and Nashville.