IJ 



Notice to JRtfader.— When you finish readinc 

 this magazine, place a 1 cent stamp on this noticat 

 mail the magazine* and it will be placed in th» 

 hands of our soldiers or sailors 



No wrapping^No Address. 



SCIENCE 



o'^^ 



New Skbies 



Vou XT.TX, No. 1269 



Friday, April 25, 1919 



SiseLE Copies, 15 Cis. 

 AnsvAi, Sdbscbiption, tS-M 



Qauscli"'|om^ 



l^icroscope 



are again in the market — backed 

 by the prestige which ^^tdches 

 to successful war serv' e i: any 

 significant capacity. 



FS2 MICROSCOPE 

 Price $40.75 



Our release from this service is of course gradual. 

 As the demands made upon us by the government are 

 lessened from month to month, however, we are enabled 

 to increase deliveries proportionately to our other 

 patrons. 



Write for catalog of our revised microscope line 

 and inform us regarding your requirements. 



Bausch ^]pn\b Optical (5. 



409 ST. PAUL STREET ROCHESTER, N.Y 



New York 



Washinffton 



Chicago 



San Francisco 



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. 



