THE ACTION OP VENOMS UPON THE PULSE- RATE. 



61 



Experiment No. 12. 



Time: 



Normal 



mm. sec. 



10 

 20 

 30 

 00 

 30 

 00 

 30 

 00 

 00 

 30 

 35 

 45 

 05 

 15 

 25 

 45 

 25 

 35 

 45 

 55 

 05 

 15 

 25 



Pulsations 

 per minute. 



305 

 300 

 240 

 240 

 270 

 265 

 265 

 270 

 275 

 300 

 300 

 300 

 300 

 260 



250 

 145 

 130 

 120 

 100 

 115 

 120 

 132 



Injected intravenously 0.004 gram dried venom of the A ncis- 

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



Injected as in the foregoing. 



[• Convulsive movements 



Animal died in a few minutes. 



Experiment No. 13. 



Normal 



Time: 

 min. see. 



10 

 30 

 00 

 30 

 00 

 30 

 30 

 30 

 50 

 30 

 50 

 50 

 00 



Pulsations 

 per minute. 



320 



320 



370 



340 



340 



330 



330 



360 



350 - 



320 



250 



360 



390 



Injected intravenously Q.003 gram dried venom of the Ancis- 

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



Injected as in the foregoing. 

 Struggles. 



Injection repeated. 

 Death. 



