THE MICROSCOPICAL ADVERTISER. 



icroscopes, fllDJectives, & llccessories 



MANUFACTURED BY 



BAUSCH & LOMB 

 OPTICAL CO. 



ROCHESTER, N. T. 



NEW YORK CITY. 



Gentlemen : 



I have received the //' Oil Immersion Objectives ordered for the Hoag- 

 land Laboratory, aiid 1 am very much pleased with them. 



I do not know of a better y" Oil Immersion Objective for bacteriologi- 

 cal work, and shall recommend this lens in future in preference to any 

 foreign objective of the same cost. 



Yery truly yours, 



GEO. M. STEKNBERG. 



N. B. — The ten objectives referred to above are our Series I, Oil 

 Immersion, having N. A. 1.25, and were ordered for use in bacteriological 

 work in the Hoagland Laboratory, Brooklyn, N. Y. 



FACTORY AND MAIN OFFICE, 



631-543 North St. Paul Street, 



ROCHESTER, N. Y. 



P.O. DRAWER 1033. 



BRANCH OFFICE, 

 KULXON BUIUDINO, 



NEW YORK CITY. 



p. O. BOX 432. 



Entered at the Poet Office at Washington, D. 0., aa Second-claaa Matter. 



