Sotiee to Jtvadtfr.— When you finish reading 

 this magazinet place a 1 cent stamp on this notice* A^ A 

 mail the magazine* and it will be placed in the ^ fj 

 hands of our soldiers or sailors ^ 



No wrapping — Ko Address. 



SCIENCE 



New Series 



Vol. XLIV, No. 1261 



Friday, Februaky 28, 1919 



BnieLK Copies, IS Crs. 

 AmniAL SuBSCRiPTiOK, (5.00 



^auscli '|oml> 



l^^icroscopes 



are again in the market— backed 

 by the prestige which attaches 

 to successful war service in any 

 significant capacity. 



FS2 MICROSCOPE 

 Price $40.75 



Our release from this service is of course gradua 

 As the demands made upon us by the government are 

 lessened from month to month, however, we are enabled 

 to increase deliveries to our other patrons. 



Write for complete catalog of our revised micro- 

 scope line and inform us regarding your require- 

 ments. ., 



Bausch ^ Ipmb Optical (o. 



409 ST. PAUL STREET, ROCHESTER, N. Y. 



New York Washington Chicaeo San Francisco 



