402 



VENOMS 



Vipera raddii, 44. 

 renardi, 44. 



russellii {daboia, or Eussell's viper), 45, 46. 

 ,, muscular apparatus of head of, 11, 12. 

 ,, poison-gland of, 11, 12. 

 ,, protection against, adopted by natives, 46. 



,, venom of, coagulant action on blood, diminished when heated, 191. 

 ,, ,, extremely potent, 46. 



,1 ,, dose lethal for rabbit, 175. 



„ „ ingestion causing death, 180. 



superciliaris, 69. 

 ursinii, 24, 25, 44. 

 Viperidce, 5, 43, 66. 



bites of, local gangrene resulting from, 177. 

 characteristics of , 5. 

 geographical distribution, 6. 

 poison-fangs canaliculate, 5. 



species of, bite produces grave local disorders, 168. 

 sub-families of, 6. See also Vipei-ina, Crotaliiue. 



venoms of, absorption by digestive tract sets up acute inflammation of gastric 

 mucous membrane, 180. 

 action on nervous centres weak, 185, 186. 



comparison of coagulant action on blood of various species, 190. 

 easily destroyed by heat, 161. 

 hsemolysing power, weak, 199. 

 lethal effects on mammals, 171. 

 neurotoxin present in those of some species, 249. 

 non-dialytic, 161. 

 produce coagulation of blood, 179, 188, 189. 



,, hsemorrhagic injections of peritoneum, 179, 180. 

 recovery after non-lethal doses, slow, 177. 



,, ,, ,, followed by loss of sight, smell, or 



hearing, 178. 

 recovery after non-lethal doses complicated by visceral haemorrhages, 



177, 178. 

 resemblance in action of that of Japanese salamander to, 317. 



,, „ ,, Ornithorhynchus to, 2fli. 



richness in hsemorrhagin, 249. 

 Viperin, chemistry of, 130. 



VipervncB, 43, 66, 101. See also Athens, Atractaspis, Bitis, Causus, Cerastes, Echis, 

 Pseudocerastes, Vipera. 

 „ characteristics of, 6, 

 Viscera, haemorrhages from, complicating recovery from bites of Viperidce, 177, 178. 

 ,, hypersemia of, caused by fatal bite of species of Colubridts, 171. 



Wall, chemical constituents of venom, 160. 



Waller, fatal instance of rapid poisoning from bite of Naja haje, 60. 



Walterirmesia, 64, 



