THE ACTION OF VENOMS UPON THE PULSE-RATE. 



67 



Experiment No. 29. 



Time: 



Pulsations 



min. sec. 



per minute. 



Normal . . . 



185 



10 



185 



20 



185 



30 



180 



1 00 



180 



1 20 



180 



3 20 



180 



3 50 



180 



5 50 



160 



1 50 





Experiment No. 30. 





Time : 



Pulsations 



Time : 



Pulsations 



miu. sec. 



per minute. 



Normal . . . 



240 



10 



230 



20 



230 



30 



230 



40 



195 



1 00 



200 



1 20 



205 



1 40 



210 



2 00 



230 



2 30 



265 



3 00 



250 



6 00 



300? 



6 05 



265 



6 15 





6 35 



210 



1 05 



260 



1 35 



260 



8 05 



260 



15 05 





Experiment No. 31. 





Time : 



Pulsations 



min. sec. 



per minute. 



Normal . . . 



235 



10 



230 



30 



240 



40 



240 



1 00 



235 



2 00 



240 



4 00 



240 



6 00 



230 



8 00 



220 



12 00 





REMARKS. 



Pncumogastric nerves and cord cut. Injected intravenously 

 0.003 gram dried venom of the Crotalus adamanleus dis- 

 solved in 1 c. c. distilled water. 



Dead. 



REMARKS. 



Pneumogastric nerves and cord cut. Injected intravenously 

 0.003 gram dried venom of the Crotalus adamanteus dis- 

 solved in 1 c. c. distilled water. 



Injected a similar dose. 



Dead. 



REMARKS. 



Pneumogastric nerves and cord cut. Injected intravenously 

 0.015 gram dried venom of the Crotalus horridus dis- 

 solved in 1 c. c. distilled water. 



Dead. 



