322 G. E. COGHILL 



Figs. 38 to 41 Coiled-reaction stage (No. 447, sections 1-5-10 to 13). X 500. 

 Four successive, serial, transverse sections through the entrance of the seventh 

 and eighth nerves into the brain. These figures are from the same specimen as 

 are figures 3 and 5, with which they should be studied. Figure 38 is the most 

 rostral of the series. In this figure the root of the lateral line ganglion on the 

 hyomandibular division of the nerve {R.L.L.VII,b) is entering, and the ascending 

 fibers of the other division {L.L.VII,Asc.a) appear in a slightly more dorsal 

 position. These fibers are seen entering the brain in the three following figures 

 {R.L.L.VII,a). The visceral sensory component of the facial nerve is entering 

 the brain in figure 39, and its fibers appear as the fasciculus solitarius (Fas. Sol.) 

 in the two following figures. The auditory root {R.VIII) enters in figures 40 and 

 41. All of these root systems lie dorsally of the descending trigeminal tract 

 (Tr.Des.V), which consists here of scattered fibers through a rather extensive 



