270 



THK GROWTH OF THE BRAIN. 



coming from the much smaller cortical area for the leg 

 and examination of cross-sections of the cord supports 



FIG. 60. Schema showing the pathway of efferent fibres. (Van 

 Gehuchten.) III-XII, nuclei of cranial nerves in connection 

 with " head area " of the cortex ; F>., central root of the 

 cervical region in connection with the "arm area" of the 

 cortex. 



this inference. These fibres forming the pyramidal 

 tracts pass down towards the spinal cord by way of 



