SCIENCE— ADVERTISEMENTS xv 



Standardized Products 



We are regularly supplying to chemical and bacteriological labora- 

 tories the following special reagents, of the highest quality. 



Arabinose 



Acid Potassium Fhthalate 



Decolorizing Carbon 



Dextrose 



Galactose 



Invert Sugar 



Lactose 



Levulose (Fructose) 



Maltose 



Mannite 



Mzunnose 



Melezitose 



Rafiinose 



Rhamnose 



Saccharose (Sucrose) 



Trehalose 



Xylose 



Prices Upon Request 



Carried in Stock by the Principal Dealers in Scientific Supplies 



Digestive Ferments Company 



DETROIT, MICHIGAN, U. S. A. 



