“ 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 hæmolytic action, 255. “ prevention of absorption first step in treatment after bite, 262. “ produces acute inflammation of mucous membrane, 180. “ protective _rôle_ of leucocytes against, 216. “ proteolytic action, 204. “ reconstitution, 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. Snakes, non-poisonous, withstand large doses of venom, 172. “ poisonous, all species carnivorous, 17. “ “ arrangement of scales on head of, 15. “ “ artificial feeding of, 17, 18. “ “ bite of, danger diminished by clothing or other means of protection, 170. “ “ blood of, toxicity, 217. “ “ characterised by special arrangement of facial bones, 6. “ “ deaths from, in Queensland, 100. “ “ devoured by herons, 227. “ “ different species should not be placed in same cage, 219. “ “ difficult to distinguish from non-venomous, 2. “ “ digestion aided by venom, 213, 214. “ “ dread of destruction of, cause of excessive mortality from snake-bite in India, 2. “ “ geographical distribution of, 2, 3. “ “ habits of, 17. “ “ health authorities’ notices respecting, in Australia, 100. “ “ kept in captivity, 61, 72, 125, 156, 223. “ “ method of capture, 20, 21. “ “ “ striking and seizing prey, 17. “ “ muscular apparatus of head of, 11, 12, 13. “ “ of Africa, 57-81. “ “ Asia, Dutch Indies and Philippine Islands, 30-57. “ “ Australia, 81-100. “ “ Europe, 22-29. “ “ Malaysia, 81. “ “ New Guinea, 81-100. “ “ South Sea Islands, 81-100. “ “ Sunda Islands, 81. “ “ poison-apparatus of, 8. “ “ poison-fangs of, 8. “ “ poison-glands of, 10, 11, 12, 13. “ “ succumb to venom of other species, 173. “ “ teeth of, difference in arrangement and dimensions of various species, 9. “ “ treatment of bites from, in French Settlements in India, 359.