318 a. E. COGHILL 



Figs. 29 to 31 Early flexure stage (No! 473, sections 1-6-16 to 18). X 500. 

 three successive transverse sections through the entrance of the root of the 

 glossopharyngeal nerve into the brain. The lateral line component {R.L.L.IX,X) 

 enters in figures 29 and 30, and the visceral sensory component (R.Vis.IX) enters 

 in figures 30 and 31 at a slightly more ventral and caudal level than the entrance 

 of the lateral line component. No ascending or descending fibers of this complex 

 can be made out beyond the limits of these three sections, a range of 30 m- 



Fig. 32 Early flexure stage (No. 473, section 2-1-12). X 500. This figure 

 shows the only perceptible connection of the vagus nerve other than the lateral 

 line root with the brain at this time, a single nerve fiber (R.X.), which is of doubt- 

 ful nature. It may be motor. 



