484 LANDACRE AND McLELLAN 
= 
50 4 YO 35 30 25 Jo /F fo a / 
Fig. 2 <A flat reconstruction of the [IX and X cerebral ganglia of Rana pipiens 
10 mm. in length; shading asin figurel. The scale at the top of the figure indicates 
number and position of sections 10yu in thickness over which the plot extends. The 
seale at the bottom of the plate indicates the number of the section and the num- 
ber of the figure illustrated in succeeding plates. As in figure 1, the special vis- 
ceral or gustatory ganglia are not indicated. 1,.2, 3, 4 are the first four roots 
according to Strong’s nomenclature (Strong ’95, plate 12, fig. (a) and page 135). 
* 100. 
Fig.3 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 anterior end 
of the [X ganglion and the origin of the ramus laryngeus. The position of the sec- 
tion on figure 2 is indicated at the bottom of that figure (Sec. 2). The details of 
the area blocked out are shown on figure 7. X 50. 
