RARE SUGARS 



and 



OTHER FINE CHEMICALS 



"DIFCO" STANDARDIZED 



Being the first manufacturing firm in the United States to 

 make and extensively advertise rare sugars, we have steadily 

 added to our line, and our list now comprises the following: 



RARE SUGARS 



OTHER CARBOHYDRATES 



Dextrin 



Mannite 



Inulin 



Salicin 



LABORATORY REAGENTS 



Invertase for Analytical Use 

 Acid Potassium Phthalate Blood Serum, Desiccated Beef Extract 

 Fibrin Gelatin Decolorizing Carbon 



Tyrosine 



» DEHYDRATED CULTURE MEDIA 



Bacto-Peptone Proteose Peptone 



Carried in slock by the principal dealers in 

 Scientific Supplies 



Specify "DIFCO" 

 WE INVITE COMPARISON 



Digestive Ferments Company 



Detroit, Michigan, U. S. A. 



