422 



DISEASES DUE TO VENOMS AND POISONS 



tition is slow and painful, but digestion is powerful and rapid, so that 

 the bones themselves are dissolved. 



There are some lizards that possess snake-like features, but on 



' f 



a, Cranial skeleton of one of the non-poisonous Cohibridx {Ptyas mucosus) ; 3, cranial 

 skeleton of one of the poisonous Cohihrida {Naja tripudians) ; c, cranial skeleton of 

 one of the poisonous Coluhrida [Bungarus fasciaius) ; d, cranial skeleton of one of the 

 Viperidce (Vipera russellii) ; e, cranial skeleton of one of the Viper idx Crotalina {Crotalus 

 durussis) ; /, cranial skeleton of one of the Colubrida Hydrophiime [Hydrophis pelamis). 



examination it will be found that they do not have extensile jaws, 

 but they do have eyelids and an external ear, which latter organ snakes 

 do not possess. 



For details see a larger work. 



