IMMUNIZATION 



155 



duce some figures given by MADSEN and JORGENSEN 

 for the content of agglutinin in a goat, which was 

 strongly immunized before the experiment against 

 typhoid bacilli. At the time indicated as o, i cc. of a 

 culture of typhoid bacilli was injected subcutaneously. 



ACTIVE IMMUNIZATION OF A GOAT AGAINST TYPHOID BACILLI 

 (MADSEN AND JORGENSEN) 



Here the time of incubation is reduced to 2-4 

 days, which is probably due to the previous strong 

 immunization, 136 units. The time of rapid increase 

 (6-6 days) lasts about as long as in the last case (6-5 

 days). The rapid decrease is not so pronounced 

 as in the last case. The final regular decrease 

 causes a sinking of the agglutinin to the half-value 

 in 1 1 days, whereas in the last case the corresponding 



