14 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



CONCLUSIONS. 



(1) Blood of warm-blooded animals is unusually preserved when mixed with an equal quantity 

 of venom, but when small quantities of venom are used the blood breaks down very rapidly. 



(2) The action of the venom of the crotalus adamanteus is less apparent upon its own blood 

 than upon the blood of other varieties of animals. 



(3) In the immunization of rabbits to crotalus adamanteus venom there is a marked leucocy- 

 tosis produced. 



(4) Blood corpuscles of rabbits, immune to fifty times the minimum fatal dose, resist the 

 direct action of the venom, so that the changes which usually occur in the corpuscles when 

 brought in contact with the venom do not occur for about thirty minutes. 



(5) Solutions of potassium permanganate brought in contact with the blood corpuscles that 

 have been altered by the action of crotalus venom restore the corpuscles to their normal size and 

 shape. 



(6) Solutions of hydrogeu peroxide have the same effect upon blood corpuscles affected by 

 venom as do the potassium permanganate solutions. 



(7) Chromic acid solutions 0.1 to 1 per cent apparently have no other effect than to decolorize 

 and partially destroy the blood corpuscles. 



(8) Calcium chloride solutions produce no apparent change in either normal corpuscles or in 

 those affected by venom. 



(9) There is an evident increased susceptibility to venom of the blood corpuscles of rabbits 

 when the rabbits are profoundly intoxicated with alcohol. 



