846 



COMPARATIVE ANATOMY 



Medulla oblongat* 



H. 



tuli drier, mamiltart 



lf. frontal. Sulc. front. \Snlc. jrae- Sale, centralis Sale, pott 

 med. suft. centra' sn6. tKotnn<{i\ r,,ttm/;. 



tral. sup. (Rola 



rails StiU. in tc, fa rut 



Sttlc. prnecentral. 

 inf 



Sulci occipitaltt 

 superior as et lattr. 



Poltis occipitalif 



AW ctretri Polus t,-m- Sulc. temp. Sutc. Snic. hcisura praeoccipHal. 



lateral { R,,,,,. post.) for all, sup. f,;,,p. mf d. temp. inf. 



Oyr Jrontalts ttiftr 



' ' \ 



Cyr. /rctitiilis wfjitts 



I Part ofrreal. 

 Pars trianfH- 

 lari, 

 Pan. ortit.,1. 



'yr. desceHttmt (Ectfrt 



c. 



Fig. 473. 



A, Diagram to show development of five secondary brain vesicles. (After His.) 

 B, Median sagittal section through brain of man. C and D, dorso-lateral cerebral 

 surfaces. C to show fissures and sulci, and D to show gyri. (After Villiger.) 



