Niw Series 



Vol. XXXVII. No. 956 



Friday, April 25, 1913 



Single Copies, 15 Cts. 

 Annual Subsoeiption, $5.00 



Efficiency and 

 Standard 



Are the distinguishing characteristics of 



The Superior Quality 

 ofBausch ^Lomb len- 

 aes, microscopes, field 

 glasses, projection ap- 

 paratus, engineering 

 and other scientific 

 instruments, is the pro- 

 duct of nearly Sixty 

 Years of Expe 



|V|icroscopesj 



The country's leading science teachers 

 endorse their high optical efficiency 

 and make them the popular choice in 

 the laboratories of many schools and 

 colleges- 



Our new Model F offers many desirable improve- 

 ments. Its long curved handle arm with large stage 

 provides unusual space for object manipulation. 



Price, Model F2, $31.50. 



Special Price to Schools. 



Write today for our Circular. It contains detailed infor- 

 mation and specifications of Model F. 



Bausch ^]pmb Optical (o. 



409 ST. PAUL STREET ROCHESTER, N.T. 



I APR26.UV. 



