t' 



SCIENGS,. 



Seeing the Unseen — 



Seeing the minute things of science, too small for the unaided 

 eye to visualize. What a revelation to the student! It awakens 

 interest and a thirst for greater knowledge — especially when the 

 wonders are revealed through the always accurate 



Qauscli"'|omb 



p^icroscope^ 



Bausch and Lomb Microscopes are made to fill every conceivable microscopical 

 need. State your microscope requirements, and we will gladly send you full 

 information on the types that will be of use to you. 



B^usch ^ Ipmb Optical ®. 



422 St. Paul Street ROCHESTER, N. Y. 



New York Chicago Waahington San Francisco London 



Makf of Pholographic Lenaa, Microtcopa, Projection Apparatus (Balopticoni), Ophthalmic 

 Lenset and Imlrumtntt, Photomlcrographic Apparatus, Range Finders and Gun Sights for Army and 

 Naoy, Searchlight Rtflectors, Sterea-Prism Binoculars, Magnifiers and other high-grade Optical 

 Products. 



