118 



CHEMICAL EQUILIBRIA 



we find that one equivalent of the first dose 

 (°'333 equivalents) neutralizes 54 ( = 3-18) per cent. 



A T 



AT = i-oo- -82 = -18 and Au= -333; hence-— = -54. 



The second dose corresponds to 57 per cent, and so 

 forth. The poison spectrum of ammonia should 

 therefore be represented as in the diagram, Fig. 32, 

 and we ought therefrom to conclude that ammonia 

 contains not less than six different "partial poisons," 



Q.uaat ity of H 3 0jB added 



Fig. 32. 



if we used the same reasoning as Ehrlich regarding 

 the diphtheria poison, which he and Sachs have in 

 this manner divided up in not less than ten different 

 " toxins " and " toxoids." Of course this is not true 

 for ammonia, and, after all, not more for the diphtheria 

 toxin ; the conclusion is based only on the relatively- 

 great errors of observation. This is easily seen 

 from the figures for ammonia, which agree with the 

 calculated figures within the possible errors of 

 observation. 



After the determination of K = 1 02 from the 



