There is no question that injuries of this kind are repaired by first intention. The soft tissues and the bone together furnish an exudation which becomes organized at one part into a layer of callus and at another into a cellular or cellulo-fibrous tissue; and it will be observed, that the connection between the two new products is considerably closer than that which exists between bone and its periosteum in their normal condition. But in the unfavorable circumstances under which these accidents occur, and in which they remain, for a more or less lengthened period, until the arrival of surgical aid, such injuries are more frequently repaired by suppuration and granulation, after the exposed layer of the bone has exfoliated. Not unfrequently, indeed, they lead to a fatal termination, by the extensive suppuration in the soft parts, and the necrosis of the bone, which, like other injuries of bone complicated with wounds of the soft parts, they set up.