GANGLIA OF RANA 485 
Fig.4 A camera outline through the dorsal portion of the right side of the head 
of Rana pipiens, 10 mm. in length. The section passes through the middle of the 
first portion of the visceral X ganglion (G.V.X}1, fig. 2) and the posterior portion of 
first branchial nerve (Br. X') of that ganglion. The position of the section is indi- 
cated at the bottom of figure 2 (Sec. 26). The details of area blocked out are shown 
in figure 8. XX 50. 
Fig. 5 A camera outline of the dorsal portion of the right side of the head of 
Rana pipiens, 10 mm. in length. The section passes through the lateralis IX 
(L.1X.) and the second visceral ganglion of X (G. V. X2). The position of this 
section is indicated at bottom of figure 2.(Sec. 31) and the details of the area 
blocked out are shown in figure 9. X 50. 
Fig.6 <A camera outline through the dorsal portion of the right side of the head 
of Rana pipiens, 10 mm. in length. The section passes through the four posterior 
masses of the X ganglion. The position of this in figure 2 is indicated at the bot- 
tom of that figure (Sec. 36). The details of the area blocked out are given in figure 
105 x<eeo0: 
