PLURALITY OF COMPLEMENTS OF THE SERUM. 



207 



pig serum with the view of separating the complements by care- 

 fully heating the sera. In the dog serum a half hour's heating to 

 49.5 and in the guinea-pig serum to 49 was sufficient to enable 

 us, by means of the differences of the weakening of the various com- 

 plementing functions, to recognize here also the plurality of the com- 

 plements. The results of these experiments are shown in Tables V 



and IX. 



TABLE VIII. 



HALF AN HOUR'S HEATING OF DOG SERUM TO 49. 5 C. 



TABLE IX. 

 HALF AN HOUR'S HEATING OF THE GUIXEA-PIG SERUM TO 49 C. 



