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I WASSERMANN TEST 



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aboratory 



Analyses 



OF ALL 

 KINDS 



DC 



Controlled by the best method, giving 

 most reliable data of all serological tests 

 for syphilis. 



HECHT-GRADWOHL TEST 



COMPLETE URINE ANALYSIS 



(Urea nitrogen, uric acid, creatinine, sugar, 

 in blood.) 



PASTEUR TREATMENT FOR RABIES 



(18 doses, with glass syringe and needles) 

 We supply containers and literature Free on demand 



We have methods of enabling us to receive 



blood sent from a distance in good shape 



for chemical analysis. 



Write us for Free Booklet on 

 Blood Chemistry 



Gradwohl Biological Laboratories 



928 N. Grand Avenue St. Louis. Mo. 



R. B. H. GRADWOHL. M.D., Director 



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INTERNATIONAL 

 CENTRIFUGES 



INTERNATIONAL 

 EQUIPMENT COMPANY 



352 Western Ave., (Brighton) 

 BOSTON, MASS. 



Catalog Cy. on request 



2169/18— Wolfhuegel's Counting Apparatus, coiissisting of 

 Countint; Plate No. 2169/17 with polished wooden base 

 containing drawer for accessories $6.25 



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2169/26 — Novy's Apparatus for Tube Cultures of Anaerobes, 



by gas or pyrogallate method. In two sizes: 150x80 mm. 

 and 200x100 mm. with and without stopcocks. 



SPECIALTIES: 



Kavalier Bohemian Normal Glassware; 

 Best Grade of American Glassware, 

 "Non-Sol," "Perfection" and"Pyrex;" 

 Max Dreverhoff, Schleicher & Schuell, 

 Swedish and English Filtering Papers; 

 Royal Berlin and Haldenwanger Berlin 

 Porcelain Ware; Best American Porce- 

 lain Ware; Troemner and Becker Bal- 

 ances and Weights; Platinum Wire, 

 Foil and Ware; Fused Sdica Laboiatory 

 Utensils "Vitreosi!;" Hanovia Pure 

 Transparent Quartz Glass; Alundum 

 Ware; Hoskins' Electric Furnaces; Le 

 Chateliei's Pyrometers; Bausch and 

 Lomb Microscopes and Acessories; Hy- 

 drometers and Thermometers of every 

 description; Chemically Pure Acids and 

 Ammonia; Merck's, Baker and Adam- 

 son's and J. T. Baker Chemical Co.'s 

 Chemicals and Reagents; Caustic Pot- 

 ash and Soda, purified in sticks and 

 pure by alchohol; Acetate of Lead, 

 Cyanide Mixture, Soda Ash and Com- 

 mercial Caustic Soda. 



HENRY HEIL CHEMICAL CO. 



210-214 South 4th Street 



St. Louis, Mo. 



