THEIE NATURE AND EFFECTS. 81 



Summary of the Diffeeence of the Effects of 

 Daboia and Cobea Poison. 



From the above examination of the symptoms pro- 

 duced by the two poisons, the following summary of the 

 differences in their effects may be made. 



Cobra-poison, when introduced slowly into the circu- 

 lation, produces gradual general paralysis, but at the 

 same time shows a preference for certain nerve centres, 

 — paralysis of the tongue, lips, and larynx, being very 

 marked symptoms, — and respiration is very quickly 

 extinguished after the paralysis shows itself. Death is 

 often attended by convulsions, which are clearly due to 

 carbonic-acid poisoning. 



Introduced with a fair amount of rapidity, these 

 symptoms are rapidly developed, the paralysis being 

 preceded by gentle stimulation, which causes slight 

 muscular twitchings. 



Injected in a large quantity into the circulation, the 

 stimulation is so violent as to cause general convulsions, 

 of which, however, the respiratory muscles have the 

 chief share, and which are immediately followed by 

 paralysis and death. 



Daboia-poison, though riot injected directly into the 

 circulation, causes directly the most violent convulsions, 

 which are in no way necessarily followed by immediate 

 paralyfis and death, but may be for the time completely 

 recovered from. They do not depend on carbonic-acid 



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