On Injuries of the Head   

thickness of the bone; and moreover, as there is less brain in that
part of the head, more persons who are wounded in the back part of
the head escape than of those who wounded in the anterior part. And
in fatal cases, a man will survive longer in winter than in summer,
whatever be the part of the head in which the wound is situated.

PART 3

As to the haedrae (dints or marks?) of sharp and light weapons, when
they take place in the bone without fissure, contusion, or depression
inwards (and these take place equally in the anterior and posterior
part of the head), death, when it does occur, does not properly result
from them. A suture appearing in a wound, when the bone is laid bare,
on whatever part of the head the wound may have been inflicted, is
the weakest point of the head to resist a blow or a weapon, when the
weapon happens to be impinged into the suture itself; but more especially
when this occurs in the bregma at the weakest part of the head, and
the sutures happen to be situated near the wound, and the weapon has
hit the sutures themselves.

PART 4

The bone in the head is liable to in the following modes, and there
are many varieties in each of these modes of fracture: When a wounded
bone breaks, in the bone comprehending the fissure, contusion necessarily
takes place where the bone is broken; for an instrument that breaks
the bone occasions a contusion thereof more or less, both at the fracture
and in the parts of the bone surrounding the fracture. This is the
first mode. But there are all possible varieties of fissures; for
some of them are fine, and so very fine that they cannot be discovered,
either immediately after the injury, or during the period in which
it would be of use to the patient if this could be ascertained. And
some of these fissures are thicker and wider, certain of them being
very wide. And some of them extend to a greater, and some to a smaller,
distance. And some are more straight, nay, completely straight; and
some are more curved, and that in a remarkable degree. And some are
deep, so as to extend downwards and through the whole bone; and some
are less so, and do not penetrate through the whole bone.

PART 5

But a bone may be contused, and yet remain in its natural condition
without any fracture in it; this is the second mode. And there are
many varieties of contusion; for they occur to a greater or less degree,
and to a greater depth, so as sometimes to extend through the whole
bone; or to a less depth, so as not to extend through the whole bone;
and to a greater and smaller length and breadth. But it is not possible
to recognize any of these varieties by the sight, so as to determine
their form and extent; neither, indeed, is it visible to the eyes
when any mischief of this kind takes place, and immediately after
the injury, whether or not the bone has been actually bruised, as
is likewise the case with certain fractures at a distance from the
seat of injury.

PART 6

And the bone being fractured, is sometimes depressed inwards from
its natural level along with the fractures, otherwise there would
be no depression; for the depressed portion being fractured and broken
off, is pushed inwards, while the rest of the bone remains in its
natural position; and in this manner a fracture is combined with the
depression. This is the third mode. There are many varieties of depression,
for it may comprehend a greater and a small extent of bone, and may
either be to a greater depth, or less so, and more superficial.