THE ACTION OF VENOMS UPON ARTERIAL PRESSURE. 



93 



Experiment No. 21. 



Time: 



Normal 



mm. sec. 



10 



20 



40 



1 00 



1 20 



1 40 



2 00 

 2 20 



4 20 



5 50 

 8 00 



144 Injected intravenously 0.015 gram dried venom of the Cro- 



talus horridus dissolved in 1 c. c. distilled water. 

 146 Struggles. 

 124 Violent struggles. 

 124 



94 



80 



70 



56 



54 



54 



44 



12 Dead. 



Experiment No. 22. 



Time: 



Normal 



mm. sec. 



10 



20 

 30 

 40 

 00 

 20 



1 

 1 



1 40 



Pressure 

 m. m. 

 90 

 76 

 54 

 44 

 50 

 54 

 44 

 24 



Injected intravenously 0.0035 gram dried venom of the Ancis- 

 trodon piscivorus dissolved in 1 c. c. distilled water. 



Convulsions. 



Dead. 



Experiment No. 23. 



Normal 



Tiir 



ie : 



Pressure 





min. 



sec. 



m. m. 









110 



Injected intn 





10 



84 



Irodon pi's. 





20 



64 







30 



68 



Struggles. 





40 



78 







50 



76 





1 



00 



72 





1 



20 



66 





3 



50 



52 





5 



50 



64 



Struggles. 



6 



00 



86 



Convulsions. 



8 



00 



100 





10 



00 



74 





12 



00 



70 





14 



00 



66 





19 



00 



70 



Injection rep 



19 



10 



70 





19 



20 



52 





19 



30 



98 





19 



40 



68 





19 



50 



90 





Injected intravenously 0.003 gram dried venom of the Ancis- 

 trodon piscivorus dissolved in 1 c. c. distilled water. 



