132 



THE STRUCTURE OF MAN 



skull roof. In Man and Mammals the pineal gland is pushed 

 away from the free surface of the brain by the growth of the 

 hemispheres, and it is thus shifted back till it comes to lie in a 

 depression between the corpora- quadrigemina (nates). It is in 



Fio. 84. BRAIN OF A BABBIT. 



A, dorsal ; B, ventral ; C, lateral view ; b.o., bulbus olfactorius ; cb'. , median Jobe of the 

 cerebellum (superior vermis) ; cb"., its lateral lobe ; cr., crura cerebri ; ep., glandula 

 pinealis ; /.&., fore-brain ; f.p., fissura pallii ; h.b., hind-brain ; h.p., hypophysis ; 

 i to xii, first to the twelfth cranial nerves ; m.b., mid-brain ; md., medulla oblongata ; 

 p.v., region of the pons. 



this position recognisable, in Man, as the well known dorso-ventrally 

 compressed pine- or cone-shaped organ. Into it the lumen of the 

 third ventricle frequently extends ; and its base divides into two 

 stalks, which pass directly into the taenise medullares and thalami 



