VIII 



Integrating this equation we gel 



- Kt + K, 



where K : is a new constant. 



This equation we put into the following form as 

 being more convenient: 



1000" 



-*r- - ct + Cl . 



Taking the left side of this equation as theordinate, 

 corresponding to t as abscissa, a new curve is obtained, 

 which, is our supposition correct, will be a straight line. 



In this straight line 



X ct + Cj 

 a series of corresponding values of t and X viz. 



1 B 



Xj X 2 X 3 ...... 



are to be found. 



To illustrate the mode of procedure I reproduce the 

 calculations of a special case. 



Goat N VII, curve N 12 had on the 33 /e an intrave- 

 nous injection of typhoid agglutinin from goat; after the 

 injection the blood contained 950 agglutinin units pr. cc. 

 During the following days the agglutinating power of 

 the blood rapidly decreased. 



In the table the time t is indicated in days, the 

 amounts of agglutinin observed in arbitrary units: 

 t 







0,3 



1 



3 



5 



8 

 11 

 15 



