62 HUNTING DIRECTORY. 



Appearances of the Distemper 



this purpose a considerable portion of the cranium was 

 removed, by first sawing through the frontal sinuses 

 transversely, and continuing the instrument laterally and 

 downwards through the occipital bone : the bony pro- 

 cesses peculiar to carnivorous animals, which assist in 

 forming the falx major, were taken away, and the brain 

 fairly exposed to view. 



" The frontal sinuses were filled with a thin, white 

 fluid, resembling pus, which flowed out freely from the 

 opening made by the saw. 



" The dura mater was perfectly healthy. 



"The veins of the pia mater covering the left hemi- 

 sphere of the cerebrum were more dilated with blood 

 than those on the opposite side. The substance of the 

 brain was firm, and bore no appearance of disease ; nor 

 was there any iilteration in the structvu-e of the ventricles. 

 The origins of all the nerves were clear and distinct. 

 The olfactory pair were extremely large, and looked 

 more like processes of brain than nerves. The pineal 

 gland was present in the form of a small pellucid speck, 

 and was seen in its usual situation at the posterior ex- 

 tremity of the third ventricle. 



" The cerebellum, the pons varolii, and the medulla 

 obl^gata were healthy ; on dividing the latter, a little 

 serum was found in the base of the cranium, and on hold- 

 ing the dog up by the hind legs about two drachms more 

 issued from the sheath of the spinal marrow. 



"The lateral and cavernous sinuses were filled with 

 dark purple blood. 



" Examiiiation of the Spinal Marroiv. — An incision 

 being carried from the occipital bone down to the sa- 



