TilE BKAIN. 



388 



Fig. 66. — Lepua 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 floceular lobe of the 

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



CC, cms cerebri. OGr, corpus gemculatum. D, descending cornu of left 

 lateral ventricle. H, hippocampus major. LF, floceular 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. 

 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. VIJ I, auditory nerve. I3C, 

 glosBo-pharyngeal nerve. X, pueumogastric nerve. XI, spinal accesiory 

 nerve. XII hypoglossal nerve. 



