CONCENTRATION OF ANTIBODIES 



fluids of an animal immune to one kind of blood show an increased 

 hemolytic and agglutinating power toward the corpuscles of another 

 species. An experiment of this kind is shown in Table 4. 



TABLE 4 . 



LYTIC AND AGGLUTINATING ACTION ON HORSE AND RABBIT CORPUSCLES OF BODY FLUIDS OF A DOG 



INJECTED WITH HORSE SERUM. 

 (100 c.c. of serum injected intraperitoneally January 16; fluids removed January 29.) 



Horse corpuscle control =o. Rabbit corpuscle control =o. 



The animal tested here, while showing a marked immunity to 

 horse corpuscles, does not show immunity toward rabbit corpuscles 

 much higher than the normal. Indeed, in the 10 normal animals 

 studied, in two cases the lysins in the neck lymph were as concentrated 

 as here; and in five cases the lysins in the thoracic lymph were as 

 concentrated as here. Therefore, the lysins for rabbit corpuscles 

 are apparently little more concentrated as may be seen by comparing 

 Table 4 with Table i. The agglutinins are somewhat higher than 

 normal. Apparently the immunity is not entirely specific. 



Muir and Browning 32 have advanced some evidence that a com- 



