THE BASE OF THE FORE-BRAIN. 



75 



Fig. 26. Base of fore-brain and cut surface of mid-brain, 

 away, to show inferior surface of the island. 



Right temporal pole cut 

 (Original.} 



a. Sulcus parolfactorius anterior, b. Sulcus parolfactorius posterior, c. Olfactory bulb. 

 d. Olfactory tract, e. Olfactory striae, f. Area parolfactoria. g. Trigonum olfactorium. 

 h. Substantia perforata anterior, i. Gyrus subcallosus (peduncle of corpus callosum). 

 j. Optic chiasma. k. Optic tract. I. Tuber cinereum. m. Infundibulum. n. Corpus mam- 

 millare. o. Substantia perforata posterior, p. Aqueductus cerebri. q. Quadrigeminal col- 

 liculus. r. Corpus pineale. s. Splenium. 



