THEIE NATUBE AND EFFECTS. 83 



'blood-poisoning little, if at all, less dangerous than the 

 primary symptoms. We have, in addition, the greater 

 local mischief caused by daboia-poison, and the greater 

 power it has of destroying the coagulability of the 

 hlood. 



The physiological properties of dahoia-poison undergo 

 great change by its being heated to 100° C. in solution, 

 losing the power of producing primary convulsions, 

 whereas cobra-poison remains unaltered. 



Daboia-poison kills birds at once in convulsions, 

 whereas with cobra-poison — unless the poison has been 

 directly injected into the circulation — death occurs only 

 after paralysis. 



Lastly, amphibia recover from an amount of daboia- 

 poison that would be necessarily fatal in the case of 

 cobra-poison. 



