[LLOYD] PRECIPITATION OF DYES 31 



The above observations suggest possible methods of identification 

 of the chemically similar but physically different substances of car- 

 bohydrate nature as they occur in plant tissues, while they afford a 

 hint as to the role played by such intravitam staining substances as 

 methylene blue in therapy. The evidently important relations 

 determined by adsorption interactions of emulsoids and other sub- 

 stances, with their hydration and dehydration, colloidal protection, 

 and other effects are also indicated in this avowedly preliminary 

 study, which has been interrupted by unavoidable conditions. 



Sec. V. Sig. 3 



