THE BRAIN. 



389 



Fig. 68. Lepus cuniculus. The ventral surface of the brain. The 

 greater part of the left temporal lobe has been sliced off horizontally. 

 The positions of the three semicircular canals of the left side are 

 indicated by the thick lines surrounding the floccular lobe of the 

 cerebellum, x 2. (a. m. m.) 



CC, cms cerebri. CG, corpus geniculatum. D, descending cornu of left 

 lateral ventricle, h, hippocampus major. LF, floccular lobe of cerebellum. 

 LL, lateral lobe of cerebellum. OC, optic chiasma. OT, optic tract, p, 

 pituitary body. PV, pons Varolii. SA, anterior vertical semicircular canal, 

 t SH, horizontal semicircular canal. SP, posterior vertical semicircular canal. 

 T, temporal lobe of cerebral hemisphere. 



I, olfactory lobe, with roots of olfactory nerves. II, optic nerve. Ill, third 

 nerve, or motor oculi. IV, pathetic nerve. V, trigeminal nerve. VI, sixth 

 or abducent nerve. VII, facial nerve. VIII, auditory nerve. IX, glosso- 

 pharyngeal nerve, x, pneumogastric nerve. XI, spinal accessory nerve. XII, 

 hypoglossal nerve. 



