THE PRECIPITINS AND THEIR ANTIBODIES 299 



interest, they must be shown to agree with the quantitative 

 measurements already executed or with other new ones. 



In the foregoing discussions it has been shown that the 

 available observations conform to the laws deduced by 

 physical chemistry for common chemical compounds. 

 Therefore discussions as to whether toxins and their 

 antitoxins, being defined as colloids, might be held not 

 subject to these general chemical laws, will possess but 

 little interest until the assumed deviations from said 

 laws are measured quantitatively. Any other method of 

 procedure has a very hypothetical value. 



