Henry L. Bruner 7) 
method, excepting those already mentioned (Sceloporus undulatus and 
Anolis caroliniensis). In the study of these forms a fairly uniform 
mode of treatment was employed, the court plaster being applied behind 
the posterior canthus, so as to leave the eyelids free. 
1. PHRYNOSOMA CoRNUTUM.—In this species the flooding of the veins 
and sinuses was somewhat slow, in accordance with the great deliberation 
which usually characterizes the movements of this form. Satisfactory 
results were easily obtained, however, both stages being shown by marked 
protrusion of the eyes. Special interest was attached to this experiment, 
because Phrynosoma is noted for the ejection of blood from the “ eye. 
No ejection accompanied the moulting movements, however, although 
several specimens were subjected to the treatment and all responded 
with large protrusion of the orbital region. 
2. STELLIO VULGARIS responded to the artificial stimulus at first with a 
mere twitching of the eyelids. Afterwards a quiet flooding of the sinus 
orbitalis was observed but reduction occurred without the production of a 
second stage. A few minutes later, however, the sinuses were flooded 
again, with two typical stages, both of which were well marked. Unusual 
prolongation of the intumescence was observed, the sinus orbitalis re- 
maining distended for several seconds, as in the first stage. Occasion- 
ally, also, the second stage was repeated two or three times in succession, 
or with short intervals between, during which the sinus was kept dis- 
tended, as in the first stage. After these movements the side of the face 
was usually scratched energetically with the hind foot. 
3. One of the obstinate cases which finally yielded satisfactory results 
was that of LACERTA MURALIS. Observations were begun on this species 
in the summer of 1903, when several specimens in good condition were 
treated in the usual way. The response usually began with a rubbing 
of the head against a convenient object, while the eyes were moderately 
protruded. Another characteristic movement was the moistening of the 
lips with the tongue, which was pushed out between the lips and repeat- 
edly drawn from the rostrum toward the angle of the mouth. Quiet 
flooding of the cephalic sinuses was observed and occasionally quick 
movements of the masticatory and buecco-pharyngeal muscles also oc- 
curred, but these movements were weak and not in their proper relation, 
so that the flooding of the blood-vessels was very incomplete. 
29 
The failure of these first experiments was accounted for by suppres- 
sion of the regular movements, due to the shyness of the specimens 
treated. I accordingly obtained other specimens the following summer, 
and these, after some preliminary irregular movements similar to those 
