308 



COLLECTED STUDIES IN IMMUNITY. 



TABLE X. 



Complete solvent dose of cobra venom (0.1%) in the presence of 0.01 cc. lecithin 

 = 0.005 cc. Complete solvent dose of lecithin in the presence of 0.1 cobra 

 venom (0.1%) =0.005 cc. 



A. 



1 cc. 5% Ox Blood + Decreasing Amounts of Cobra Venom Kept Two Hours 



B. 



1 cc. 5% Ox Blood + Decreasing Amounts of Lecithin Kept at C. for Two 



C. 



