Plate II. Ventral view of the brain of an adult albino rat four times 

 natural size. The representation of the nerve roots is somewhat 

 diagrammatic. 



bo, olfactory bulb; cho, optic chiasma; cma, mamillary body; ct, 

 trapezoid body; frh, rhinal fissure; i, infundibulum; Ip, pyriform 

 lobe; nc, neopallium; p, pyramid; pf, paraflocculus; po, pons; pp, 

 basis (pes) pedunculi cerebri; si, first cervical spinal nerve, ventral 

 root; tc, tuber cinereum; to, tuberculum olfactorium; trol, olfactory 

 tract; III., oculomotor nerve; IV., trochlear nerve; V., trigeminal 

 nerve (large sensory and small motor portions); VI., abducent nerve; 

 VII., facial nerve; VIII., auditory nerve; IX. +X., glossopharyngeal 

 and vagus nerves; XL, spinal accessory nerve; XII., hypoglossal 

 nerve. 



