The _bolla_ is one of the most terrible weapons used by the South American horsemen. It consists of three balls, covered with leather, and fastened to three leathern cords, which are connected. One of the balls is held in the hand, while the other two are flourished in the air over the head, when the order is given to charge. When a horse is struck in the leg with one of them, it stops him, and sometimes makes him fall; and in this way many captures are made. The South American cavalry soldier is second to none in the world, in any kind of combat; and in a defeat, they retain their superiority in pursuing their enemy. They are stopped in their course by no obstacles in the field. If a tree does not allow them to pass while sitting erect, they throw themselves back upon the crupper of the half-wild horse, and disappear among the trappings of the animal. They arrive at a river, and plunge in, with their arms in their teeth; and sometimes wound their enemy in the middle of the stream. Besides the bolla, they carry the terrible _Coltelo_, or knife, which, as before has been mentioned, they keep with them all their lives, and manage with a dexterity peculiar to themselves. Woe to the soldier whose horse tires! "Bollado," or struck with the bolla, he cannot defend himself from the knife of his pursuer, who dismounts to strike him with it in the throat, and then mounts again, to overtake others. Such customs prevail among them, that sometimes, when men of courage meet, even after a victory, scenes occur which would shock a reader if they were described. One of those encounters I witnessed. It occurred at a short distance from a line, between a party of our soldiers and one of the enemy, whose horse had been killed. Having fallen to the ground, he rose and fought on foot, first with him who had dismounted him, whom he treated very roughly. Another then came to his assistance, then another; and at length he was engaged with six, when I reached the spot, in order to save the life of the brave man—but too late. Our enemy was now entirely routed, and the victory complete. The pursuit was continued several miles. The immediate result, however, was not what it might have been, for the want of good horses, as many of the enemy escaped. But, notwithstanding this, during the whole time that the troops remained at Salto, we had the satisfaction of seeing that department free from the enemy.