DESCRIPTION OF FIGURES. 299 



origin of the V nerve (555), X 50. The motor V nucleus lies not at 

 the point indicated by the letters m. 71. v., but a few sections farther 

 cephalad in the corresponding position. 



Fzgtere 21. — Transection of the V + VII ganglionic complex of 

 Menidia through the geniculate ganglion (529), X 50.. 



Plate VII. 



Figure 22. — Transection of the V+ VII roots of Menidia at the 

 level at which the ganglionic complex passes through a foramen to 

 the outer side of the cranial wall (500), X 50. 



Figure 2j. — Similar transection at the origin of the infraorbital 

 trunk (485), X 50. 



Figure ^^. —Similar transection farther cephalad, showing the 

 median and lateral lobes of the first ganglion of the sympathetic 

 chain (481), X 50. 



Figure 2j. — Similar section farther cephalad, showing the origin 

 of the radix longa of the ciliary ganglion and of the r. ophthalmicus 

 profundus (478), X 50. 



Figure 26. — A projection on the transverse plane of the course of 

 the first facial root of the r. lateralis accessorius and the mode of its 

 origin from the geniculate ganglion. A composite constructed by 

 the superposition of a series of camera lucida outlines of transverse 

 sections, X 50. The numbers represent the serial section numbers at 

 the points where they are placed. At the point marked x the second 

 root of the r. lateralis accessorius joins the first root. 



Figure 27. — A camera sketch of a preparation of the left operculum 

 of Menidia, X 10. See the text, Section 7, IV, 2. 



