/ 
THE 
VETERINARIAN. 
VOL. vii, No. 77.] MA\, 1834. 
[New Series, No. 17. 
MR. YOUATT’S VETERINARY LECTURES, 
DELIVERED AT THE UNIVERSITY OF LONDON. 
LECTURE XLI. 
The Ninth Pair of Nerves—the Glosso-Pharyngeus—an organic 
motor Nerve. 
THE Lateral Column of the spinal chord appears in view on 
each side immediately posterior to the pons varolii. It is dis¬ 
tinct from the very beginning in the human being, under the 
name of the coripus restiforme. The corpus olivare there separates 
it from the central column on the inferior surface of the medulla 
oblongata, and is in a manner interposed between the central and 
the lateral columns ; while there is a distinct sulcus on each side, 
which unites at the base of the corpus olivare, and forms an evi¬ 
dent furrow that can be followed along the whole course of the 
spinal chord. On the superior surface of the chord, and com¬ 
mencing within the fourth ventricle, there is also a line of demar¬ 
cation between the central and lateral columns. In the solipede 
orthe ruminant,however, there is no distinct corpus olivare,nor any 
sulcus on either side cl it; but the lateral column is as evident, 
or more so. The sulcus between it and the central column can¬ 
not be overlooked ; and the rounded head of the column is com¬ 
posed of the corpus olivare compressed and flattened out, with 
which the corpus restiforme is blended, and in which it is lost. 
The Nerves from the Lateral Column. —From the sulcus be¬ 
tween the corpus olivare and restiforme, in the human being, and 
from the anterior surface of the spinal chord and the front of the 
lateral column, in the same subject, but from the sice of the round¬ 
ed head of the lateral column in the quadruped, there arise three 
distinct sets of nerves which now demand consideration. One 
portion of the seventh (portio dura), the ninth or glosso-pharyn- 
geus, and the tenth or cerebro-visceral motor nerve. The seventh, 
with its double root, I will for the present pass over : we are not 
prepared for its consideration. I will proceed to the ninth. 
VOL. vii. . I i 
