L.ol 



& 



IC'T-foftm 



Lot 



D 



Cos Co.p MH JV J1H 

 Ep 



iv --- 



^ I* 



<'/i /)i 



V 



FIG. 881. Rana esculenta. The brain. A, from above ; B, from below ; C, from the side ; 

 D, in sagittal section. Aq. Syl. iter or Aqueduct of Sylvius ; Ca. corpus callosum ; ch. opt. 

 optic chiasma ; co. a. anterior commissure ; co. p. posterior commissure ; co. s. superior com- 

 nissure ; F. Mo. foramen of Monro ; HH, cerebellum ; Hyp. pituitary body ; Inf. inf undibulum ; 



. ol. olfactory lobe 

 optic thalamus ; Tr 

 sphere ; ZH, diencephal 

 From Wiedersheim's Comparative Anatomy.) 



