$4 THE DOGS SKULL, 
frontals; on the sides of which, notice the post- 
orbital processes. 
The cribriform plate is bounded dorsally and later- 
ally by the frontals; beneath and posterior to 
the cribriform plate, the most anterior portion 
of the pre-sphenoid is visible, and anteriorly 
the vomer. 
P P [n.O.F. 
Fig 9.—Transverse section through the Skull passing in 
front of the fronto-parietal suture and the 
anterior borderof the Pre-sphenoid. (F.w.c.) 
C. Cribriform plate. F. Frontal. FS. Frontal Sinus. JIn.0O.F. Inter- 
orbital foramen. I.0.F. Infra-orbital foramen. JU. Malar. L. Lachrymal. 
L.C. Lachrymal canal. OrS. Orbito-sphenoid. P, Palatine. Po.P. Post- 
orbital process. PS. Pre-sphenoid. Vo. Vomer. 
Laterally, notice the lachrymals, perforated by the 
lachrymal canal. 
