174 VENOMS 
VIPERIDÆ#. 
Venom of Vipera berus oP “ ... 0°04 gramme 
Vipera russellii (Daboia) co OO OO 
+ Lachesis lanceolatus Brats So) OOP a 
| Lachesis mutus (Surucucu)  ..… 0°02 - 
7 Lachesis neuwiedii (Urutu) ... 0°02 5 
a Lachesis flavoviridis  … ae OOO, - 
Ancistrodon contortria ... . 00'S + 
Cobra-venom. Dose lethal in twenty-four hours for different 
animals :— 
Dog. 48 an ... 0°0008 gramme per kilogramme 
Rabbit 509 see .… 0°0005 
Guinea-pig ... sas ... 0:0004 5 
Rat ... Sa ae ... 00001 . 150 grammes 
Mouse a 2 ...  0‘000003 = 25 . 
Frog ace aie ... 0°0008 5 30 s 
Venom of Bungarus ceruleus (Common Krait), according to 
Elliot, Sillar, and Carmichael.! Minimal lethal doses for :— 
Frog one a .. 0°0005 gramme 
Rat wr sits =.) O00! An 
Rabbit (by subcutaneous 
injection) : UD 000082, per kilogramme 
Rabbit (by caer in- 
jection, according to G. 
Lamb) ... oat ... 0°00004 ,, 
Venom of Ænhydrina valakadien (according to Elhot and 
Fraser).” Minimal lethal doses per kilogramme : — 
Rat as ae ... 0°00009 gramme 
Rabbit oe sie «+» 0°00006 
Cat ine at ... 0°0002 » 
Venom of Enhydris curtus :— 
Rat ise st ... 0°0005 to 0:0006 gramme per kilogramme 
' Proc, Roy. Soc., London, Ixxiv., 1904, pp. 108-109. 
? Ibid., pp. 104-108. 
