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

EIGHTH FIGURE OF THE SIXTH CHAPTER 33


Although I should like to be as little trouble to the reader as possible in the number of figures and will therefore avoid separately illustrating individual bones of the head wherever possible, yet because the circumference of the cuneiform bone [os sphenoidale] and the eighth bone [os ethmoidale] of the head, which is as full of holes [lamina et foramina cribrosa] as a seive, 34 is not as readily understood as the other bones of the head, the cuneiform bone is represented in this figure with the eighth bone free from all the others on the side where it faces the inside of the skull [basis cranii interna], the seat of the brain. 35 We have presented it so that the hollows that generally occur in the cuneiform bone will be as conspicuous as possible.

A B A : The eighth bone 36 of the head; B specifically identifies the septum [crista galli] separating the areas provided for the processes [tracti] of the cerebrum which come out of the brain like nerves [tractus et bulbus olfactorius] and are considered to be the organs of smell. 37
C D : The two principal hollows [sinus sphenoidales] of the cuneiform bone.
E : Septum [septum intersinuale sphenoidale] dividing the hollows just indicated.
F : Foramen [apertura sinus sphenoidalis] of one hollow or antrum, extending into the space of the nostrils.
G : Cavity located in the lower area of the septum dividing the two principal antra. The remaining foramina visible everywhere in this figure will be explained in the twelfth Chapter, together with the other foramina of the skull. 38
H : Processes [laminae mediales et lateralis processus pterygoidei] of the cuneiform bone that resemble bats’ wings, 39 visible here on each side.
It is now time to begin the text of the Chapter, to discuss all these parts in order, and judge the diligent craft of our Maker in building the skull. I believe it will be permitted, with apologies to those preoccupied with words alone, to include the entire construction represented in the third, fourth, fifth, sixth, and seventh figures under the name “skull”, though others would wish only the part adorned with hair to be so called. For teaching purposes, we are dividing this mass into the head [cranium] and the upper maxilla [maxilla]. 40



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