120 INDIAN SNAKm POISONS, 



coagulum are also poisonous. When water is added to 

 the coagulum decomposition rapidly sets in, and the 

 products cannot be distinguished from those of any 

 other similar organic body. The changes are greatly 

 dependent on the physical conditions to which the 

 poison is subjected. Coagulation occurred in some 

 poison kept at 29° C. (84° F.) in ten days, whereas 

 weeks were required when the temperature was 20° 0. 

 (68° F.) 



The effects of heat on cobra-poison are well worthy 

 of attention. It is well known that raising the tempe- 

 rature of a solution of cobra-poison to boiling point 

 does not destroy its physiological effects, though much 

 less local inflammation is then produced by it. 



Experiment I. 



Six centigrammes and a half of dried cobra-poison 

 were heated in solution to boiling point, and the solution 

 was afterwards injected into a dog. 



12.50 P.M. Injection. 



1.40 P.M. Eetching. 



1.45 P.M. Vomiting. 



1.50 P.M. Staggering. 



1.54 P.M. Muscular twitchings. 



1.50 P.M. Profuse salivation ; cannot stand. 



2.27^ P.M. Dead. 



There was but very slight local inflammation rft the 

 site of the injection. 



