64 



THE VENOMS OF CERTAIN T H A N A T P II I D E M . 



Experiment No. 21. 



Normal 



Time: 

 min. sec. 



10 

 30 

 00 

 30 

 00 

 30 

 30 

 00 

 30 



Pulsations 

 per minute. 



295 



300 



300 



300 



295 



300 



305 



290 



285 



9 30 



Experiment No. 22. 





Time: 



Pulsations 





min. 



sec. 



per minute. 



Normal 





20 



315 





1 



00 



320 





1 



20 



335 





1 



40 



330 





2 



00 



320 





2 



20 



340 





4 



20 



340 





5 



50 



350 





8 







Experiment No. 23. 







Time: 



Pulsations 



Normal 



20 



30 

 40 

 50 

 00 

 20 

 50 

 50 

 00 

 00 

 00 

 00 

 00 

 00 

 10 

 19 20 

 19 30 

 19 40 



19 50 



20 00 



per minute. 



240 

 300 



300 



300 



300 



240 



225' 



210 



270 



300 



*285 



270 



270 



285 



240 



255 



255 



255' 



240 



240 



240 



REMARKS. 



Pneumogastric nerves cut. Injected intravenously 0.003 

 gram dried venom of the Grotalus adamanteus dissolved 

 in 1 c. c. distilled water. 



Injected a similar dose. 

 Dead. 



REMARKS. 



Pneumogastric nerves cut. Injected intravenously 0.015 

 gram dried venom of tbe Grotalus horridus dissolved in 

 1 c. c. distilled water. 



Violent struggles. 



Dead. 



Pneumogastric nerves cut. Injected intravenously 0.003 

 gram dried venom of the Ancistrodon piscivorus dissolved 

 in 1 c. c. distilled water. 



Struggles. 



Struggles. 

 Convulsions. 



Injected a similar dose. 



