8GIENGE~ADVERTI8EMENT8 



OUR I 



IS ENTITLED 



LABORATORY APPARATUS AND REAGENTS 



SELECTED FOR LABORATORIES OF 



CHEMISTRY AND BIOLOGY 



in their application to Education, the Industries, Medicine and the Public Health, including some 

 equipment for Metallurgy, Mineralogy, the Testing of Materials and Optical Projection. 



NOW READY 



FOR 



DISTRIBUTION 



J 4 «. I 



PLEASE STATE 

 YOUR LABOR A- 

 TORYCONNEG- 

 TIONS IN MAK- 

 ING REQUESTS. 



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It consists of 656 pages, 8x llj inches in size, bound in serviceable green cloth. The Apparatus 

 section comprises 585 pages on which are listed 12,356 distinct items illustrated with 3,295 illustrationa 

 — mostly new woodcuts drawn directly from the apparatus. In the descriptions an attempt has been 

 made accurately to describe the items withoutthe use of superlatives. A condensed index with group 

 arrangement faces page 1, and a very comprehensive general Index is provided at the end of the 

 Apparatus section. 



In the Reagent section there are listed 2,305 different chemicals with the Certified, Guaranteed 

 and Typical Analyses of Kahlbaum, Merck and Baker printed under all of the more important high- 

 grade Chemicals. Prices are given in both original and other size packages with cost of containers 

 clearly shown and we believe the arrangement affords the buyer an opportunity to make intelligent 

 choice of Reagents on the basis of both quality and price. 



We particularly ask a careful reading of the prefatory pages preceding both the Apparatus and 

 Eeagent sections, as in these we attempt to outline the range of our business and, to some extent, the 

 principles under which it is conducted. 



This catalogue is sent gratis only to those whose identity with regular established 

 laboratory work is fully known to us. Where we have no information as to such connec- 

 tion, or where it does not exist, a charge of $2.50 is made for the catalogue, which amount 

 is credited against the first $50.00 purchase made therefrom. 



ARTHUR 



S COfVSPANY 



IMPORTERS AND DEALERS 



MICROSCOPES, LABORATORY APPARATUS AND CHEMICALS 



WEST WASHINGTON SQUARE 

 PHILADELPHIA 



