CONSIDERATIONS OF THE BRAIN OR ENCEPHALON. 



47 



Fig. 21. Base of brain. (Original.) 



a. Olfactory bulb. b. Olfactory tract, c. Medial and lateral olfactory strise. d. Trigo- 

 num olf actorium. e. Area parolf actoria (Brocas). f. Anterior perforated substance, g. Op- 

 tic chiasma. h. Optic tract, i. Tuber cinereum. j. Infundibulum. k. Hypophysis. 1. Cor- 

 pus mammillare. m. Posterior perforated substance, n. Basis pedunculi. o. Sulcus 

 parclfactorius anterior. 2 to 12, the cerebral nerves. 



