32 
THE, DOGS SKULL, 
through which the maxillary division 
of the fifth nerve passes. 
Anteriorly each maxilla is produced into a 
plate-like portion, the facial or nasal 
plate. In a like manner posteriorly 
each is produced and forms the malar 
process. Behind and beneath the 
malar process is a small tuberosity, 
in which are a number of small fora- 
mina, for the passage of the superior 
dental nerve and blood vessels. The 
ventral portion is termed the alveolar 
portion; it is hollowed out into the 
alveoli, or sockets, for the lodgment 
of teeth. From the alveolar border 
a large horizontal process passes in- 
wards, the palatine plate, which meets 
with its fellow of the opposite side in 
the median line, in a sutural ridge 
which lends support to the vomer. 
The premaxill@ form the most anterior 
portion of the skull; together with 
the maxillz, with which they articu- 
late, they form the upper jaw. They an- 
chylose with each other in the median 
line, and also carry the incisor teeth. 
The lateral and dorsal portions of each 
bone articulates with the nasal. 
On the ventral surface each is perforated 
by a large aperture, the anterior 
