PHYSIOLOGICAL ACTION OF VENOM OF BLACK SNAKE. 225 
Experiment 11—Dog, weight 13-5 kilos., ‘15 gramme morphia 
hypodermically ; ether during operation, 
Excursion 
Blood ofthe style 
_ hpi at each Remarks, 
hea. ch beat 
oc: 
| 
| 90 00008 a as kilo. injected into 
jugular v 
SES 
me he 
or 
trachea clamped. 
right and left vagus cut. 
cooococoooso 
bo 
OUk 
ies) 
or 
Aan WSs er 
c8o8oS8wrcobSgwo SES 
cooooococcooooooo ocoooeooose 
~7 
—_ 
—— end of right Mas dons (ponagee 
pressure to fall t 
-00045 | wenities per kilo. tee 
0005 gramme per kilo. injected 
ou 
ror) 
Cm How cree cr oth crt 
OorPwWwWNnNNnW NNN HH Ree 
Ht 
31 
19 Fae 
ceptible dead 
_ 
Oo 
Vagus beats disappeared in two minutes after the injection 
of the venom, Twenty minutes after injection of poison pressure 
®qualled 68 mm., and clamping trachea raised it to 170 mm. 
Severing both Vagi produced no effect. Stimulation of peripheral 
- tnd of right Vagus stopped the heart. 
O—~July 3, 1895, 
