The Bausch & Lomb Auxograph 



For Demonstrating and Recording Plant Growth 



is a practical instrumeDt for educational use which 

 possesses the following advantages: 



Prominence of Record 



Ease and Simplicity of Adjustment 



Comparative Accuracy 



DurabiUty 



Ready Portability 



Principle and Operation Perfectly Apparent 



PRICE, complete, $25.00 



Ask for Catalog 



Bausch J5* Ipmb Optical (o. 



WEW YOUK WASHINGTON CHICAGO SAN FR.ANCISCO 



LONDON iiOCHESTEri,N.Y. ^i^ankfort 



Leading American Makers of Microscopes, Projection Apparatus (Balopticons), 

 Photographic Lenses, Binoculars and other High Grade Optical Products 



