THE DOGS SKULL, 
xvi. The inter-orbital foramina per- 
forate the anterior portion of the 
palatine, on the inner wall of the orbit. 
They transmit the nasal branch of 
the ophthalmie division of the fifth 
nerve. 
xvii. The infra-orbital foramina are 
two large apertures, one situated on 
either side of the maxilla beneath the 
jugals. They transmit branches of 
the maxillary division of the fifth 
nerve. 
xvill. A series of foramina perforate the 
posterior border of the ethmo-turbinal, 
through which branches of the olfaet- 
ory nerve pass. This _ perforated 
plate is termed the eribriform plate. 
xix. The inferior dental foramen is a 
large aperture on the inner side of 
the ascending ramus of the mandible, 
slightly above and in front of the 
angular process. It leads into the 
dental canal, and admits a branch of 
the fifth nerve known as the dental 
nerve, also an artery. 
xx. The mental foramen is a small 
aperture on the outside of the hori- 
zontal ramus of the mandible ; and, in 
the anterior portion, throuch-1t va 
branch of the dental nerve makes 
its exit. 
