132 MAMMALIA. 



which divides into a temporal and malar branch, as in the dog, but varies in size in 

 different animals, according to the extent of the parts to be supplied ; in the dog the 

 temporal branch of the malar gives a branch to communicate with one from the supra- 

 orbital for the lachrymal gland, and then passes out at the exterior of the orbit, 

 communicates with a branch of the hard portion, and is distributed to the cutaneous 

 muscle and skin of the temple. The malar branch, on emerging from its foramen, 

 communicates with a branch of the hard portion, and then terminates on the skin of 

 the face and the lower eye-lid. In the calf, pig, and sheep, the temporal and malar 

 branches arise separately. In the calf a nerve is sent from the Gasserian ganglion, 

 close to and communicating with the temporal ; it supplies the lachrymal gland, and 

 then terminates on the outer part of the upper eye-lid and eye-brow ; the temporal 

 emerges at the exterior of the orbit, communicates with the hard portion, and gives 

 branches to the superficial muscles and skin of the temple ; the greatest part of it 

 then passes outwards, to be distributed on the horn. The malar portion, on emerging, 

 communicates with the hard portion, and is distributed principally on the lower eye-lid. 

 Two other branches from the Gasserian ganglion pass outwardly in a canal on the 

 inner plate of the frontal sinus, as far as the junction of this with the outer plate, near 

 the insertion of the horn. In the pig, the temporal sends off filaments, which com- 

 municate with others from the outer branch of the lachrymal, and then passes on the 

 temple, and joins a large branch of the temporal branch of the hard portion, to supply 

 the outer part of the orbicular muscle and the skin of the temple ; the malar emerges 

 from the orbit, and communicates with a filament of the hard portion, and then 

 supplies the lower eye-lid. In the monkey, the second trunk of the fifth gives off the 

 Vidian, the lateral nasal and palatine, as in man, but not from a ganglion. In many 

 other animals the second trunk gives off the lateral nasal and palatine, which some- 

 times arise in one branch, and then separate ; the lateral nasal becomes connected 

 with the Vidian, and on entering the nose becomes also connected with part of the 

 olfactory, and is distributed on the Schneiderian membrane; the palatine passes 

 through one or several foramina, to be distributed on the palate. In the calf, the 

 lateral nasal and palatine nerves arise separately, but communicate afterwards by 



