TOXICITY OF THE BLOOD OF VENOMOUS SNAKES 221 
Summing up what has been stated above, we find that the 
blood of both poisonous and non-poisonous snakes contains toxic 
substances, destructible by heating to 68° C., and physiologically 
distinct from venoms, but like the latter possessing the property 
of dissolving the red corpuscles of the majority of vertebrates and 
of producing hemorrhages. 
