CHEMICAL EQUILIBRIA 



117 



neutralization products (with their specific anti- 

 toxins) are consequently less dissociated than the 

 corresponding products of diphtheria toxin. 



If we now consider the neutralization of ammonia 

 with boracic acid, which is tabulated below, we 

 find that the toxicity, when equivalent quantities are 

 mixed, has been reduced to only about 50 per cent, 

 and, even if the double quantity of boracic acid has 



NEUTRALIZATION OF THE HAEMOLYTIC ACTION (T) OF i MOL. 

 NH 3 THROUGH n EQUIVALENTS OF H 3 O 3 B 



K= 1-02 (1-04 Lund^n). 



been used, still 33-5 per cent of the ammonia is not 

 neutralized(compareFig. 3O,uppermostcurve). From 

 the figures observed we calculate K = i -02 or about 

 no times as much as for diphtheria serum. Here 

 EHRLICH'S phenomenon is extremely pronounced. 

 If we now represent AT : tu from the observations, 

 as EHRLICH did in his so-called "poison spectra," 



