94 



LECTURES ON IMMUNITY 



at different times. For this purpose a part of the mixture 

 was rapidly cooied in a test-tube surrounded by ice, whereby 

 the destruction of the lysin was practically brought to an 

 end. The quantity of lysin remaining was determined in 

 the ordinary manner by measuring its haemolytic action 

 upon a suspension of erythrocytes. 



In this manner the following values were obtained : 



