SCIEN 



APR 2^1^: 



New Sebies 



Vol. LIII, No. 1373 



Friday, April 22, 1921 



i', 1^ tS JOPIES, 15 Cts. 



S ^ t' SUBSCKIPTION, $6.00 



Headquarters for 



Assay, Bacteriological and Chemi 

 tory Apparatus 



Also for 



Chemical Reagents, Minerals, Drugs 



( s 



abora- 



Stains 



Amongst our leading apparatus specialties 

 we mention the following: Chainomatic, 2 J 

 and Student Balances; Dulin Rotarex and other 

 forms of asphalt testing apparatus; U. S. 

 Weather Bureau Barometers; Emerson and 

 Parr Calorimeters with accessories; Campbell, 

 Hurley, Du-Bosc, and Kober Colorimeters, also 

 Lovibond Tintometers; Braun Chipmunk 

 Crushers and Disc Pulverizers; Barnstead and 

 Stokes Water Distilling Apparatus; Juerst 

 Ebuloscopes; Braun and Kimley Electro 

 Analysis Apparatus; Bailey, Pickel and Soxhlet 

 Extraction Apparatus; Replaceable Unit Or- 

 ganic, Combustion, Muffle, Crucible, " Hevi- 

 Duty " and "High-Temp" Electric Furnaces; 

 Orsat, Hempel, Elliott, Haldane, Henderson, 

 Rogers, Tuttle, and Williams Gas Analysis 

 Apparatus; Detroit Gasoline Gas Generators; 

 Gauges; Beamue, Brix Specific Gravity, and 

 Twaddle Hydrometers; Bausch & Lomb and 

 Spencer Microscopes and Microtomes; Bausch 

 & Lomb Metallurgical Outfits, also Wysor 

 Grinding and Polishing Machines; Hortvet 

 Cryoscope and Morgan Drop Weight .Appa- 

 ratus; DuPont Nitrometers and Kjeldahl Appa- 

 ratus; Abel Pensky and Pensky Martin Flash 

 Point Testers; Doolittle, Engler, MacMichael, 

 Sayboldt and Stormer Viscosimeters ; Bingham and Green Viscometer and 

 Plastometer; Freas Automatically Controlled Electrically Heated Incubators, 

 Ovens, Sterilizers, Water Baths and Water Thermostats, Eppley Standard 

 Cells, Oil Thermostat and Electric Titration Apparatus, Polariscopes; Filter 

 Presses, Vacuum and Pressure Pumps, Refractometers, Spectroscopes, Shaking 

 Apparatus; Stirring Apparatus; Thermometers, Water Testing Apparatus, etc. 



Du Boise Colorimeter 



himer ^AmEnd 



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NEW YORK CITY 

 3rd An^ 18th— 19th St, 



PITTSBURGH BRANCH 

 2011 Jenkint Arcade 



