202 
A. LIAUTARD. 
deep organs are the globe of the eye, the lacrymal apparatus, 
the muscles moving the globe, blood vessels and nerves; all 
enclosed in the ocular sheath, a kind of envelope which isolates 
them from the surrounding parts. 
SUPRACILIARY REGION. 
It lias for base, inwardly, the orbital process of the frontal, 
outwardly the apex of the zygomatic process of the temporal and 
the superior extremity of the moelar bone resting on the temporal. 
It is limited above by the hollows of the eye* below by the superior 
eyelid, inside fiy the frontal region, outside it extends to the masse- 
terine region. It is therefore elongated sideways, slightly con¬ 
vex from above below, and curved in its great axis. 
The skin of that region is somewhat thick, and is covered 
with hairs, early in foetal life; these are uniform and short, 
mixed up with some long and strong ones. Under the skin we find 
1° the superior fibres of the orbicularis palpebrum, very adher¬ 
ing to the skin and under, immediately on the bone, a connective 
tissue somewhat abundant and easily infiltrated. 
We find also the orbital process of the frontal turned out¬ 
ward, downward and a little backward, about one centimeter 
thick behind, sharp forward, and perforated at the base by the 
ciliary foramen, which gives passage to the nerve and artery of 
the same name ; it rests upon the extremity of the temporal. The 
orbital process covers the lacrymal gland and the globe of the 
eye. The blood vessels are small; they come from the ophthal¬ 
mic artery, and go to the angular vein. Sensitive nerves come 
from the fifth pair. 
Differences —That region in carnivorous and in pigs has, 
properly speaking, no bony frame ; the orbital process of the 
frontal not resting on the zygomatic process. In its place is 
found a fibrous cord on which the ocular sheath is attached. 
PALPEBRAL REGION. 
The eyelids are membranous sheaths placed in front of the 
ocular globe, which they partly or entirely cover, whether open 
or closed. It is not easy to define closely the eyelids, as they 
*Sali$re. 
