Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 6 On the Eight Bones of the Head and the Sutures Connecting Them

Appendix D: A cartilage or bone in the brain

But since Galen elsewhere 149 mentions a cartilaginous or osseous substance located next to the gland in the brain (L in figure 7, book 7) that is compared by anatomists to the look of a pine cone [corpus pineale], and for this reason one might find lacking something apparently omitted in my account of the bones of the head, I would like to advise those concerned that in the skull of a dog, unlike that of man, a wide and quite thin bone is seen originating from the occipital bone, laid over the entire upper surface of the cerebellum in the same way as we see the process [tentorium cerebelli] (O, O, O in figure 7, book 7 and V, V in figure 8, book 7) of the hard membrane [dura mater cranialis] of the brain covering the cerebellum in humans, parting and separating it from the cerebrum where the latter presses upon the cerebellum; this process is extremely hard and thick at the point (next to V [venae internae cerebri] in figure 7, book 7) where it brings vessels [vena magna cerebri] (H in figure 6, book 7) in its own pocket into the anterior ventricles [ventriculus tertius] of the brain next to the recently mentioned gland 150 (T in figure 7, book 7). The hardness of this part or area has seemed to some so great in certain animals that they have called it cartilaginous or even osseous — unless perhaps people disputing about the cartilage or bone of the cerebrum knowingly referred to that thin, wide canine bone, even though it never occurs in man. But no one should fail to realize that most of the ancients presented as confused an anatomy of many animals as Galen did.



Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 6 On the Eight Bones of the Head and the Sutures Connecting Them