398 , VENOMS 



Snake-venom, antagonism between coagulant and anticoagulant kinde, 194. 

 ,, antidotes to, before absorption, 260; 261. 



,, artificial introduction into egg of fowl, effect on embryo, 214. 



,, bacteriolytic action, 206. 



,, „ substance in, peculiarities of, 207, 208. 



, , chemical study of, 159. 



collection of, 147, 152-158. 

 ,, „ in French Settlements in India, 359. 



,, combination with lecithin, 254. 



,, combined with snake-serum does not dissolve red corpuscles, 220. 



,, complex effects on tissues, 215. 



,, complexity of means of defence against, 215. 



,, cytolytic action, 206. 



,, diastasic action of, 212. 



dried, 149. 

 ,, effects of, in non-lethal doses, 177. 



,, extraction of, by Hindus, 233. 



,, ,, from Alcatifa, for inoculation, 239. 



,, freshly collected, 149. 



,, hypoleucocytosis following fatal dose, 216. 



,, immunity to, 222. 



,, '„ from inoculation, 234-235. 



„ of herons to, probable, 226, 227. 



,, ingestion of, fails to secure immunity to lethal dose, 214, 215. 



,, ,, harmless, 214. 



,, lethal to snakes of other species, 219. 



,, neutralisation by antitoxin, 253-258. 



,, ,, injection of antitoxic serum, second step in treatment 



after bite, 262. 

 ,, no strict ratio between dose inoculated and time elapsing till death, 177. 



,, parallelism between neurotoxic and htemolytic action, 255. 



,, prevention of absorption first step in treatment after bite,(_262. 



,, produces acute inflammation of mucous membrane, 180. 



,, protective role of leucocytes against, 216. 



,, proteolytic action, 204. 



,, re-constitution, method of, 257, 258. 



,, secretion of, 147-152. 



,, temperature lowered after fatal dose, 216. 



,, toxic conditions of, 151. 



„ vaccination against, 241. 



,, variations in local effects of, 176. 



Snakes, coloration of, 15, 16. 



,, subject to biological laws of mimicry, 15, 16. 



cranial skeleton of, 6. 



dentition of, 6. 



moulting of skin, 16, 20. 



non-poisonous, arrangement of scales on head of, 14. 

 ,, poison-glands in, 217. 



,, venomous saliva of, 214. 



