160 THE VITAMINES 



which are not yet classified as such, like pellagra and war edema. 

 Other conditions also, like ophthalmia, dental caries, and some 

 infectious and constitutional conditions, the progress of which seems 

 to be influenced by vitamine additions, should be mentioned here. 

 The application to human pathology is obviously the objective point 

 of the entire vitamine problem. We believe, therefore, that after the 

 demonstration of the chemistry and physiology of the vitamines, as 

 well as the vitamine content of the various foodstuffs, and the influ- 

 ence of the treatment these foodstuffs undergo before consumption, 

 the reader will be better able to perceive the real significance of the 

 vitamines in human pathology. 



