ANTITOXINS 



theria toxins, proved this opinion to be incorrect. 

 Ehrlich 1 deserves the credit for first clearly per- 

 ceiving and calling attention to this fact. He 

 obtained from various sources twelve toxins and 

 compared their neutralizing value upon antitoxin; 

 these tests gave interesting and important in- 

 formation. The following table gives the results 

 in four of his toxins and well illustrates the point in 

 question : 



It was natural to suppose, as the early investi- 

 gators did, that a just neutral mixture of toxin and 



1 Ehrlich, Die Werthbemessung des Diphtherieheilserums. 

 Klinisches Jahrbuch, 1897. 



