110 



LECTURES ON IMMUNITY 



the temperature would probably exert a very minute influ- 

 ence. To attain a certain effect, for instance total 

 haemolysis or the first appreciable trace of haemolysis, a 

 certain amount of acid or base would be necessary, equiv- 

 alent to the quantity of erythrocytes present. Madsen and 

 I found the following values (q) of 0.05 n. NaOH or 

 0.037 n - NH 3 to be the greatest quantities which could 



