Blowpipes are formed in various ways,--for one, the stems of a small palm, the triatea setigera, are used. Outside they appear pointed, from the scars of the fallen leaves, but within they have a soft pith, which soon rots in water, and is easily extracted, leaving a smooth, polished bore. They vary from the thickness of a finger to two inches in diameter. Each of these stems is slender, the one of a size which may be pushed inside the larger. This is done that any curve in the one may counteract that in the other. A conical wooden mouthpiece is fitted on the one end, and the whole is spirally bound with the smooth black bark of a creeper. Two teeth, fastened about a couple of feet apart from the mouth end, serve as sights to enable the sportsman to take better aim. The end applied to the mouth is bound round with a small silk-grass cord to prevent it splitting; while the other is strengthened by having the seed of a nut, with a hole cut through it, secured round it. The arrows, from nine to ten inches long, are made from the leaves of a species of palm, or from the spinous processes of the patawa, pointed as sharp as a needle. The other end is burned hard, and round it is wound a little conical tuft of tree-cotton, the silky covering of the bomba, so as exactly to fill up the bore of the tube. They are carried in a quiver, which holds some hundreds. It is in shape somewhat like a backgammon dice-box, formed of basketwork, and covered with a piece of the skin of the tapir. To it is attached a bunch of silk-grass, a small piece of bone for scratching the point of the arrows, and a basket for holding wild honey secured round the blunt end. The points of the arrows are tipped with the deadly wourali or urali poison. Another kind of gravatana is made of two separate pieces of wood, each scooped out so as to form one half of the tube. The two halves are then secured together, by binding round them spirally long fiat strips of the jacitira, or wood of the climbing palm-tree, the whole being afterwards smeared over with the black wax of the melipona bee. The tube tapers towards the muzzle, and a cup-shaped mouthpiece is fitted in the broad end. It is so heavy that only a strong man, accustomed to its use, can employ it. The boys learn to shoot with a smaller and lighter instrument. The tools used are made of the incisor teeth of the paca and cavy. A light arrow is put in at the inner end, and when the ball of silk-cotton secured to the shafts fits tightly, it can be propelled with such force by the breath that it makes a noise almost as loud as a pop-gun when flying from the muzzle. An expert Indian can propel arrows so as to kill at a distance of fifty or sixty yards. It is more useful in the forest than a gun, for the report of firearms alarms the birds or monkeys, while the silent poisoned dart brings them down one by one, until the sportsman has a heap of slain by his side. WOURALI POISON.