100 



THE VENOMS OF CERTAIN THANATOPHIDE2E. 



Time: 



Pressure 



min. see. 



m. m. 



1 00 



27 



1 30 



27 



2 00 



27 



2 30 



22 



9 30 





Dead. Heart arrested in diastole ; blood incoagulable , 

 ecchymoses well-marked in peritoneum and pericardium ; 

 intestines congested ; 50 c. c serum in peritoneal cavity. 

 Section of cord complete, except anterior columns. 



Experiment No. 39. 





Time: 



Pressure 



min. 



sec. 



m. m. 



Normal . . 





44 





10 



44 





20 



56 





30 



62 





40 



60 



1 



00 



52 



1 



20 



44 



1 



40 



44 



2 



00 



38 



4 



00 



30 



6 



00 



28 



8 



00 



26 



12 



00 



22 



Experiment No. 40. 





Time. 



Pressure 



min. 



sec. 



m. m. 



Normal 





46 





20 



40 





30 



48 





40 



44 



1 



00 



44 



1 



30 



40 



1 



50 



38 



4 



20 



28 



6 



20 



28 



8 



20 



28 



10 



20 



28 



12 



20 



28 



15 



20 



28 



18 



20 



28 



21 



20 





Injected intravenously 0.015 gram dried venom of the Cro- 

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



Dead. 



REMARKS. 



Injected intravenously 0.003 gram dried venom of the Ancis- 



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

 Muscular movements. 



Dead. Blood is incoagulable : 

 membranes. 



no ecchymoses in serous 



Experiment No. 41. 



Normal 



Time : 

 min. sec. 



10 

 20 

 40 



Pressure 

 m. m. 

 64 

 56 

 54 

 48 



Injected intravenously 0.003 gram dried venom of the Ancis- 

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



