VELOCITY OF REACTION. HETEROGENEOUS SYSTEMS 115 



triolein seem to differ from the other lysins. The formula 

 gives the observed results within the limits of the errors 

 of observation. 



The change of the agglutinating power with temperature 

 was investigated in an analogous manner. The values for 

 mercuric chloride, ricin, coli- and typhoid-agglutinin are 

 given below for the shortest times used : 



INFLUENCE OF TEMPERATURE ON AGGLUTINATION BY MEANS OF 



The two agglutinins acting upon equine erythrocytes 

 give remarkably similar values of /*, although the time of 

 reaction is rather long. 



The values of /* for longer times seems to indicate 

 that the limit-value of p for the two bacterio-agglutinins 



