406 



THE EXTERNAL CONFIGURATION 



The number of these fissures of the second order has 

 been computed to be from 600 to 800. They divide the 

 surface of the Cerebellum into a multitude of ' laminae,' 

 the nature and arrangement of which will be better ap- 

 preciated after an examination of figs. 156, 162, 166. 



Fig. 150.— Inferior Surface of the Cerebellum (Sappey, after Hirschfeld. ) 1,1, 

 Inferior vermiform process ; 2, 2, median fissure of the cerebellum ; 3, 3, 3, lobes 

 and lobules of the cerebellar hemispheres; 4, 'amygdala' or almond-like lobe ; 

 6, lobule of the pneumogastric ; 6, pons Varolii; 7, median groove on the same; 

 8, middle peduncle of the cerebellum ; 9. cut surface of medulla ; 10, anterior 

 extremity of the great circumferential fissiu-e ; 11, anterior border of the upper 

 surface of the cerebellum ; 12, motor root of the trigeminal nerve ; 13, sensory root 

 of the same ; 14, nerve of the external ocular muscle ; 15, facial nerve ; 10, nerve of 

 Wrisberg; 17, auditory nerve; 18, glosso-pharyngeal nerve; 19, pneumogastric 

 nerve \ 20, si)inal accessory nerve ; 21, hj'poglossal nerve. 



According to Marshall, the Cerebellum of the Bush- 

 woman was more prominent at the sides, and proportion- 

 ally wider and longer than in the European, though its 

 outline was not so fall and rounded, and its actual bulk 

 was less. As the result of laborious comparative investi- 

 gations, he says, " tlie number of lamime in the Bush- 

 woman's Cerebellum agrees very closely with that in the 

 European, the dilferences being probably only such as 



