WILLARD: CRANIAL NERVES OF ANOLIS CAROLINENSIS. 83 
back far enough to reach the trunk ganglion. This was done in an- 
other series. The best demonstration however, of the course of the 
yagus to show the trunk ganglion and the postganglionic branches 
was furnished by a dissection of this region mounted in balsam. As 
these structures lie underneath all muscles, it was possible to remove 
the floor of the pharynx in this region and pin it out on cork and then 
fix it in Vom Rath’s fluid. The preparation, which consisted of the 
‘mucous membrane, the blood vessels and the nerve trunk with all the 
branches to the mucous membrane, was cleared and mounted on a 
glass slide giving a diagrammatic picture of the distribution of the 
nerves. A drawing (Fig. L) of a portion of such a preparation is given 
Fig. L.— Camera drawing of a portion of a dissection to show trunk ganglion 
of the vagus and the relation of ramus recurrens to the arterial arches. 
This is part of a preparation made in the same manner as that showing dis- 
tribution of motor VII (figure J). For ver. X, read rcr. X. 
(0 supplement the plotting. It will be seen that no branches are 
siven off proximal to the ganglion, which lies just clear of the thymus 
sland at its posterior end. The ganglion itself is a pear-shaped struc- 
jure through the center of which there is a distinct fiber path. At its 
listal end two very fine rami are given off, one (phx. X) mesally, to 
. he pharynx wall, the other (sy. XY.) to the main sympathetic trunk. 
” ‘he vagus nerve crosses the arterial arches on their ventral side and 
-/aches a position alongside the trachea just cephalad of the bronchial 
ivision. As it nears the median line the ramus recurrens laryngis 
ie X.) is given off. It crosses the arterial arches on their dorsal 
\de thus forming the loop. The posterior ramus visceralis proper was 
ot followed farther than is shown in this preparation. It branches 
