Freiburger historische Bestände - digital

EXPLANATION

OF

PLATE 26.

the canal in which the organon of Jacobson lias had its place

Fig. 1. Sagittal section of the skull of the old Elephant Chang. At the time when it was drawn the whole
of the ethmoturbinals had been cut away and they have therefore here been taken from another figure of the
same specimen which is drawn at a time when they were still invested with the mucous membrane.

Most of the thin vertical plate dividing the deep groove, into which the nuchal ligament has been inserted,
has been taken away, only an upper and an inferior fragment having been left.

bony

condyle opening of foramen lacerum post,

carotic canal

1 The orbital fissure has its opening in the upper wall of the foramen rotunduni and is not seen in this position of the. skull.

Fig. 2. Horizontal section of the skull of the Elephant k. As far as the cerebral cavity reaches, the cut
has been laid nearly parallel to the upper surface of the basioccipital, but anteriorly the cut has a somewhat
other direction, forming a very obtuse angle with the posterior part of the section. The cut has gone somewhat
above the bony auditory meatus, on the left side a little deeper than on the right; on the left it has taken away the
upper part of the tympano-petrosum and has opened the cavum tympani and the innermost part of the bony
meatus. On the right side the said bone is intact.