Laboratory 



Analyses of all Kinds 



Chemical Analysis of BLOOD 



Useful in tbe diagnosis and treatment of 



Nephritis, Diabetes, 

 Gout & Rheumatism 



Chemical Analysis of URINE 



Wassermann Test (every test is controlled by 



Hecht-Weiiiberg-Gradwohl 



modification.) 



Gonorrheal Complement Fixation 



Vac 



Test. Sput um Te sts. 

 Pasteur Treatm en t fo r Rabies. 



Containers and Literature Free on Demand 



WRITE FOR OUR NEW BOOKLET ON 

 BLOOD CHEMISTRY 



GRADWOHL BIOLOGICAL LABORATORIES 



PLEASE NOTE '^IjR NEW ADDRESS 



928 N. Grand Avenue St. Louis, Mo. 



R. B. H. Gradwohl. M. IJ /; irc o> 



INTERNATIONAL 

 CENTRIFUGES 



,d^= 



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'/'a -..t-s., f.> all 



INTERNATIONAL 

 EQUIPMENT COMPANY 



352 Western Ave., (Brighton) 

 BOSTON. MASS. 

 Catalog Cy. on request 



HENRY HEIL CHEMICAL CO. 



210-214 South 4th Street, St. Louis, Mo. 



Importers and Manufacturers of 



Chemical Apparatus, Chemicals 



and Laboratory Supplies Generally 



We have the stock and can make prompt delivery 



SPECIALTIES: 



Kavalier Bohemian Normal Glassware 



Best Grade of American Glassware, "Non-Sol," 



"Perfection" and "Pyrex" 

 Max Dreverhoff, Schleicher & Schull, Swedish, 



English and Blue Label Filtering Papers 

 Royal Berlin and Haldenwanger Berlin Porcelain 



Ware 

 Best American Porcelain Ware 

 Troemner & Becker Balances and Weights 

 Platinum Wire, Foil and Ware 

 Fused Silica Laboratory Utensils "Vitreosil" 

 Hanovia Pure Transparent Quartz Glass 

 Alundum Ware 



Hoskins' Electric Furnaces 



Chatelier's Pyrometers 



Bausch and Lomb Microscopes and Accessories 



Hydrometers and Thermometers of every description 



Chemically Pure Acids and Ammonia, Molybdic 



Acid and Molybdate of Ammonia 

 Merck's, Baker and Adamson's and J. T. Baker 



Chemical Co.'s Chemicals and Reagents 

 Caustic Potash and Soda, purified in sticks and 



pure by alcohol 

 Acetate of Lead, Cyanide Mixture, Soda Ash and 



Commercial Caustic Soda 



We carry a very large and complete stock of everything used in the laboratory and solicit your orders 



or inquiries. There is nothing in the chemical line which we cannot furnish. 



You will find us prompt, courteous and reliable 



In our Glassblowing Establishment we can produce any apparatus, no matter how complicated 



