384 VENOMS 
Hemorrhagin, present in some species of Viperidæ, 249. 
sensitive to heat, 249. 
Bamnanyjas 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 Colubride, Hydrophiide and Viperide, 161. 
hemorrhagin sensitive to, 249. 
,, resistance of hæmolysins 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. 
As 33 proved experimentally, 226. 
i blood of, toxic hefore too antitoxic afterwards, 226. 
Heloderma horridum, 321. 
a AA saliva sometimes toxic, sometimes harmless, 323. 
an venom of, 321, 322. 
Hemibungar us, 39. 
calligaster, 40. 
collaris, 40. 
a japonicus, 40. 
me nigrescens, 40. 
Henri, V., poison from pedicellariæ prepared by, 273. 
Herons of Colombia hunt young snakes for food, 227. 
5 probable immunity to snake-venom, 226, 227. 
Histera- albumoses, active principle of snake-venom, 164. 
+ separation from snake-venom, 162, 163. 
Heterometrus maurus, venom of, 279. 
Fp effect upon sparrows, 279. 
High frequency Gumconts, alternating, attenuate venom only by thermic action, 165. 
Hill, Patrick, on duck-billed platypus, 324. 
Hindus, worship bestowed on Naja by, 38. 
Holbrook on Crotalus confluentus, 125. 
Holocanthus, 305. 
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LE] 
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- imperator, 305. 
Homalopsine, sub-family of Opisthoglypha, 3. 
Le geographical distribution, 4. 
a aquatic, 4. 
Homorelaps, 57. 
Hoplocephalus, 93. 
a bitorquatus, 94. 
bungaroides (syn. H. variegatus, broad-headed snake), 94. 
curtus (Notechis scutatus, tiger-snake), 95. 
a a pa bite dangerous, 100. 
- 55 ie à LA secretion of, 149. 
3 stephensii, 94. 
Horned rattle-snake, 129. See also Crotalus cerastes. 
Horse, bleeding, aseptically, after vaccination to obtain antivenomous serum, 245, 246. 
immunisation to venom, difficulties attending, 244, 245. 
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