334 Dr. A. J. Wall. On the [June 16, 



11.27 a.m. Affected by the poison. Staggers when he attempts to 

 walk. Chewing movement of the jaw and lips. 



11.28 a.m. Salivation. 



11.30 A.M. Pupils somewhat small. 



11.31 a.m. Attempting to vomit. 



11.35 a.m. Respiration becoming slower. 



11.37 a.m. Respirations 16 per minute. 



11.38 a.m. Copions salivation. 



11.39 a.m. Respirations fallen to 12 per minute. 



11.42 a.m. Tongue hanging out of the mouth. 



11.43 to 11.46. Convulsions. 



11.47-J a.m. Respiration completely ceased. Pupils dilating. 

 11.49 a.m. Heart stopped. Dead. 



'Experiment II. 



A fine large cock had 2 mgrms. of dried cobra poison in solution 

 injected into its leg. 

 3.13 p.m. Injection. 

 3.20 p.m. Respirations 30 per minute. 



3.38 p.m. Head drooping as if the neck were too weak to support 

 it ; but from time to time the head is raised with a jerk. 

 3.41 p.m. Respirations 25 ; can barely stand. 

 3.48 p.m. Respiratory movement very slight. 

 3.50 p.m. Cannot stand. 



3.55 p.m. Respirations 19 ; pupils somewhat contracted. 

 4.3 p.m. Respirations 16 ; movement exaggerated. 

 4.5 p.m. Comb has become of a dusky purple colour ; slight con- 

 vulsive movements of the body. 

 4.9 p.m. Respirations 9. 

 4.17 p.m. Convulsions. 



4.20 to 4.22 p.m. Convulsions continuing, but gradually becoming 

 less violent. 



4" 25 p.m. Pupils widely dilated. Dead. 



Experiment III. 



A medium-sized frog (Rana tigrina) had 5 cgrms. of dried cobra 

 poison dissolved in water, injected into its dorsal sac : — 

 12.42 p.m. Injection. 

 1.23 p.m. Struggling violently to escape. 

 1.40 P.M. Becoming paralysed. 

 1.53 p.m. Dead. 



In these three experiments the effects of cobra poison on mammals, 

 birds, and amphibia, are well shown. But as the symptoms in man, 

 owing to the differences in his nervous system, are peculiar, it is 

 requisite to give an outline of the results of cobra poisoning in his 



