20 THE VENOMS OF CERTAIN TH A N A T P HI DE 



Crotalus adamanteus 



O.o grain dried venom = water-venom-globulin 0.0495 



copper- veil om-globuliii 0.0375 



dialysis- venom-globulin 0.0360 



0.1 230 = globulins. 



0.3770 = peptone' (estimated.) 



Ancistiodon piscivorus 



0.3364 grain dried venom = water-venom-globulin 0.0034 



copper- venom-globulin 0.0182 



dialysis-venom-globulin 0.0047 



0.0263 = globulins. 

 0.3101 = peptone 1 (estimated). 



According to this estimate there would be in 0.5 gram 0.0391 globulins. 



0.4609 peptone.' 



Cobra 



0.2 gram dried venom = water-venom-globulin 0.0035 



peptone 1 0.1965 (estimated). 



According to this estimate there would be in 0.5 gram 0.0087 globulin. 



4912 peptone. 1 



From these analyses it will be observed that the dried venom of the Crotalus 

 adamanteus contains 24.6 per cent, of globulins, the Ancistrodon 7.8 per cent., 

 and the Cobra 1.75 per cent. The globulins in the Crotalus venom appear to be 

 in almost equal proportions, while in the Ancistrodon the copper-venom-globulin is 

 about five times greater than the water-venom-globulin and about four times more 

 than the dialysis-venom-globulin the two latter being nearly in the same propor- 

 tion therefore constituting more than half of the entire weight of globulins. 



These differences in the proportions of the various globulins in any specimen of 

 venom and the differences in the proportions of globulins and peptones in different 

 venoms are of immense importance in affording an explanation of the physiological 

 peculiarities exhibited in poisoning by different species of snakes. It will be 

 observed that the proportion of globulins in Crotalus is over three times the 

 quantity in the Ancistrodon, and nearly fifteen times that in the Cobra. 



1 Including the salts, which are in very small quantity. 



