Here we see the word "brain" occurring for the first time in human speech, as far as it is known to us; and in discussing injuries affecting the brain, we note the surgeon's effort to delimit his terms as he selects for specialization a series of common and current words to designate three degrees of injury to the skull indicated in modern surgery by the terms "fracture", "compound fracture," and "compound comminuted fracture," all of which the ancient commentator carefully explains.
