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 mail the magaxine* and it will be placed in the 

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SCIENCE 



NBW BiBin FhTDAV TaNTIARV 24 1Q1Q BWOLI Copies, IB Ct». 



Vol. XLIX No. 1256 T KIDAY, J ANUAKY -i*, IWiy ahotal Sdbbobiptios, |5.oe 



New Optical Apparatus 



— an Announcement 



With the cessation of hostilities we are enabled to direct our at- 

 tention to the long-contemplated development of several new lines 

 of optical instruments, hitherto unproduced in America. These in- 

 clude : 



ABBE REFRACTOMETER 

 ABBE REFRACTOMETER 



with "dry substance" or sugar scale 



DIPPING REFRACTOMETER 

 SACCHARIMETER 



for commercial or factory use 



DUBOSCO COLORIMETER 



In the development of this new apparatus our scientific and tech- 

 nical staffs are collaborating closely with American authorities on these 

 instruments for the purpose of meeting every requirement in the most 

 satisfactory^ manner possible. Fiu-thermore, our greatly increased 

 manufacturing facilities, now being gradually released from their im- 

 portant wartime activities, will enable us to solve the problems of 

 quantity production as soon as the readjustment to a^ peace produc- 

 tion basis can be accomplished. 



It will of necessity require some time for us to place these new 

 lines definitely upon the market. In the meantime, by subsequent 

 annoimcements, we shall keep our patrons informed as to, our progress. 



Bausch y Ipmb Optical (g. 



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



New York Washineton Chioaeo San Francisco 



