In five in which the cranial cavity was wounded, four patients perished.

There were two remarkable instances of recovery after penetration of the pleural cavity by arrows.

The great fatality of arrow-wounds of the abdomen is well known, and, according to Bill, the Indians always aim at the umbilicus; when fighting Indians, the Mexicans are accustomed to envelop the abdomen, as the most vulnerable part, in many folds of a blanket.
Of the arrow-wounds reported, nine were fatal, with one exception, in which the lesion implicated the soft parts only.

The regions injured were the scalp, face, and neck, in three instances; the parietes of the chest in six; the long muscles of the back in two; the abdominal muscles in two; the hip or buttocks in three; the testis in one; the shoulder or arm in 13; forearm or hand in six; the thigh or leg in seven.
The force with which arrows are projected by Indians is so great that it has been estimated that the initial velocity nearly equals that of a musket-ball.

At a short distance an arrow will perforate the larger bones without comminuting them, causing a slight fissure only, and resembling the effect of a pistol-ball fired through a window-glass a few yards off.
Among extraordinary cases of recovery from arrow-wounds, several of the most striking will be recorded.