384 VENOMS 



Hsemorrhagin, present in some speoies.of ViperidcB, 249. 



,, sensitive to heat, 249. 



Hamadryas elaps, 37. See also Naja bungarus. 

 Harlequin or coral snake, 106. . See also Elaps fulvius. 

 Heart, action of venom on, 184. 



Heat, comparative effect on venoms of ColubridcB, HydrophiidcB and ViperidcB, 161. 

 ,, hsBmorrhagin sensitive to, 249. 

 ,, resistance of hsemolysins of venoms to, 202. 



,, sole agent in attenuating venom submitted to alternating high frequency currents, 

 165. 

 Heating destroys toxicity of blood of reptiles, 218. 

 Hedgehog, immunity of, to venom of Vipera berus, 226. 



,, ,, „ ,, proved experimentally, 226. 



,, blood of, toxic before heating, antitoxic afterwards, 226. 



Heloderma horridum, 321. 



,, „ saliva sometimes toxic, sometimes harmless, 323. 



„ „ venom of, 321, 322. 



Hemibungarus, 39. 



,, calligaster, 40. 



,, collaris, 40. 



„ japonicus, 40. 



,, nigrescens, 40. 



Henri, V., poison from pedicellarise prepared by, 273. 

 Herons of Colombia hunt young snakes for food, 227. 



,, ,, probable immunity to snake-venom, 226, 227. 



Hetero-albumoses, active principle of snake-venom, 164. 



,, separation from snake-venom, 162, 168. 



Heterometrus maurus, venom of, 279. 



,, ,, ,, efiect upon sparrows, 279. 



High frequency currents, alternating, attenuate venom only by thermic action, 165. 

 Hill, Patrick, on duck-billed platypus, 324. 

 Hindus, worship bestowed on Naja by, 38. 

 Holbrook on Grotalus confluentus, 125. 

 JSolocanthus, 305. 



,, imperator, 305. 



Homalopsince, sub-family of Opisthoglypha, 3. 

 „ geographical distribution, 4. 



,, aquatic, 4. 



Homorelaps, 57. 

 Hoplocephahis, 93. 



„ bitorguatus, 94. 



,, bungaroides (syn. S. variegatus, broad-headed snake), 94. 



,, curtus {Notechis scutatus, tiger-snake), 95. 



,, ,, ,, ,, ,, bite dangerous, 100. 



,, ,, ,, ,. ,, secretion of, 149. 



,, stephensii, 94. 



Horned rattle-snake, 129. See also Grotalus cerastes. 



Horse, bleeding, aseptically, after vaccination to obtain antiyenomous serum, 245, 246. 

 ,, immunisation to venom, diflfioultieS, attending, 244, 245. 



