406 THE EXTERNAL CONFIGURATION 



The number of these fissures of the second order has 

 heen computed to he 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, l f 

 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 ; 

 5, 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 fissure ; 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 ; 16, nerve of 

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

 nerve ; 20, spinal accessory nerve ; 21, hypoglossal 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 full and rounded, and its actual bulk 

 was less. As the result of laborious comparative investi- 

 gations, he says, " the number of laminae in the Bush- 

 woman's Cerebellum agrees very closely with that in the 

 European, the differences being probably only such as 



