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

The suture surrounding the eighth bone [os ethmoidale] of the head.

There is also another (near h, L, and Y in figure 6) [sutura frontoethmoidalis] common to the head inside the skull, appearing mainly where the brain is contained, between the frontal bone and the bone (A, B, A in fig. 8) [os ethmoidale] where the organs of smell (L and D in fig. 13, Bk. 7) are located and which looks as full of holes as a seive [lamina et foramina cribrosa]. This bone, as if inserted into the base of the frontal bone, is obscurely surrounded by this suture, which skirts it in the head cavity; it has another suture as well between it and the bones of the upper maxilla. This bone extends a bony septum (S in fig. 5, O in fig. 1, ch. 9) [lamina perpendicularis] separating the foramina [cavitates nasi] of the nostrils; it is divided by a suture (g in figure 1, Ch. 9) [sutura vomeromaxilla] along the lower part of the septum, extending its length from the largest bones of the upper maxilla which hold the teeth, just as it is also separated from the cuneiform bone [os sphenoidale] in the place (ϖ, m,n, c in fig. 2, ch. 12) where the foramina of the nostrils reach the throat. 75 I shall explain in what manner this bone is perforated like a seive in my account of other bones of the head, after I have gone over the other sutures common to the head and other bones.



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