72 



Messrs. Mott, Schuster, and Sherrington. [Mar. 28, 



marked in the diagram with a number of large and small dots is covered by 

 a type of cortex characterised by the absence of a distinct layer of " granules " 

 or " stellate cells," and thus corresponding to Campbell's* precentral and 



19 a (mesial surface) 



Fig. 1. 



L, Lateral Surface of Right Hemisphere ; E, Mesial Surface of Eight Hemisphere, 



intermediate precentral types, or to Brodmann'sf types 4 and 6. The size of 

 the dots shows roughly the relative size of the largest cells in the ganglionic 

 layer or inner layer of large pyramids. The largest of these clots indicate 

 the presence of cells which may safely be called giant pyramids or Betz 



* Campbell, ' Histological Studies on the Localisation of Cerebral Function,' Cambridge, 

 1905. 



t Brodniann, "Beitrage zur histologischen Localisation der Grosshirnrinde," III, 

 ' Journal fur Psychologie und Neurologie,' 1905, bd. 4, heft 5 — 6. 



