322 H. W. NORMS AND SALLY P. HUGHES 



the portio major. The latter contains only a very small per- 

 centage of the motor elements in the trigeminal nerve. The 

 sensory fibers of the portio major on entering the brain pass by 



Fig. 22 A projection upon the sagittal plane of the roots and ganglia of the 

 V-VII-VIII nerve complex, portions of the lateral-line roots and ganglia being 

 represented as cut away to expose the gasserian ganglion with its roots and the 

 roots of the facialis proper. Of the auditory nerve only the root is shown. Left 

 view. X20. 



a broad sweeping curve into the tractus spinalis trigemini, run- 

 ning ventral to the motor and visceral sensory roots of the fa- 

 cialis. The condition in Squalus gives no justification for the 

 statement that "the fibers of the ophthalmicus profundus are 



