On the Precipitin of Cobra Venom.

The Serological and Blood Relationships of Some Common Australian Snakes

“…We have therefore explored the degree of specificity exhibited in preeipitin and complement fixation reactions by the sera of some of these closely allied ophidians, though it seemed unlikely that the former, even witb the development of an adsorption technique, would prove of much value, particularly in view of the results of many modern workers with mammalian sera. Pnrthermore, the nonspecificity exhibited in preeipitin reaetions by the venoms of poisonous snakes (Lamb,8; Plexner and Noguchi,4; Houssay and Negrete,6) was not encouraging. Pinally, we bave utilized suitably adsorbed haemagglutinating sera, which promise a greater degree of specificity, as is indicated by the results obtained with mammalian sera by Landsteiner and Reich (9), Yon Dungern and Hirschfeld (2), Morgenroth and Bieling (11), and by Landsteiner and Van der Scheer (10).…”

On the precipitins of snake antivenoms and snake antisera

“…The action of Daboia antivenom on cobra venom is even less itntense than that of anti-cobra venom on the poison of Daboia. If 2 This antiserum, therefore, though not a very powerful one has an unmistakeable action on cobra serum.…”