68 



THE VENOMS OF CERTAIN THANATOPHIDE^E. 



Experiment No. 32. 



Time : 



Pulsations 



min. 



sec. 



per minute. 



Normal . , 





220 





20 



210 





30 



200 





40 



200 



1 



00 



210 



1 



30 



210 



1 



50 



210 



4 



20 



195 



8 



20 



210 



10 



20 



210 



12 



20 



210 



15 



20 



210 



18 



20 



210 



21 



20 





Experiment No. 33. 





Time: 



Pulsations 



min. 



sec. 



per minute. 



Normal 





260 





10 



255 





20 



250 





40 



243 



1 



00 



243 



1 



30 



245 



2 



00 



240 



4 



00 



240 



1 



00 



240 



9 



00 



240 



11 



00 



240 



13 



00 



240 



15 



00 



240 



17 



00 



240 



20 



00 



240 



22 



00 



240 



22 



15 



? 



Pneumogastric nerves and cord cut. Injected intravenously 

 0.003 gram dried venom of the Ancistrodon piscivorus 

 dissolved in 1 c. c. distilled water. 



Struggles. 



Dead. 



Pneumogastric nerves and cord cut. Injected intravenously 

 0.003 gram dried venom of the Ancistrodon contorlrix 

 dissolved in 1 c. c. distilled water. 



22 30 



Injected 0.006 gram. 



Dead. 



Experiment No. 34. 



Normal 



Time: 



Pulsations 



min. sec. 



per minute. 





220 



10 



215 



30 



215 



1 00 



210 



3 00 



215 



5 00 



215 



8 00 



225 



11 00 



225 



14 00 



225 



19 00 



REMARKS. 



Pneumogastric nerves and cord cut. Injected intravenously 

 0.003 gram dried Cobra venom dissolved in 1 c. c. distilled 

 water. 



225 Killed by pithing. 



