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SCIENCE 



Hew StiBtes 

 Vol. LI, No. 1307 



Friday, January 16, 1920 



Single Copies, 15 Cts. 

 Anncal Subscbiftion, $6.00 



Education 

 Thru the Eye 



Which makes an impres- 

 sion more quickly — word 

 or picture ? • 



Why are illustrated talks 

 better attended than all- 

 words lectures ? 



Because education comes 

 more quickly through the 

 eye . Visual education — 

 through the use of Bausch 

 & Lomb BaJopticons, par- 

 ticularly — is recognized as 

 the quickest means for making people imderstand. Did not pictures 

 bring the war to us faster, more vividly, than words ? 



Balopticons are Bausch & Lomb products. Could more be said of 

 their quality ? Could the quality of their pictures be given a better 

 guarantee ? 



Bausch ^ Ipmb Optical (o. 



Combined Balopticon for Lantern Slides and Opaque 

 Objects. Price, $150.00 



New York 

 Ghicaeo 



Washingrton 

 ROCHESTER, N. Y. 



San Francisco 

 London 



Leading American Makers of Photographic Lenses, Microscopes, Projection 

 Apparatus (Balopticons), Ophthalmic Lenses and Instruments, Photomicro- 

 graphic Apparatus, Range Finders and Gun Sights for Army and Navy, 

 Searchlight Reflectors, Stereo-Prism Binoculars, Magnifiers and other High- 

 Grade Optical Products. 



