320 



CONDENSIU) AIlLK AND jNIlLK POWDKR 



Model FFS8 



^auscK'lomk 



Microscopes 



Standards of Optical and 

 Mechanical Efficiency 



Model FFS8 ^^ especially suitable for bac- 

 ■■■^^■■■■i^" teriological work. Has 

 coarse and fine focusing adjustments, with 

 adjustment heads on side of arm; two iris 

 diaphragms, three objectives — including oil 

 immersion — in revolving nosepiece; two eye- 

 pieces and an Abbe condenser in quick-acting 

 screw sub-stage. Number of magnifications 

 obtainable ranges from 50 to 1260. Con- 

 struction is rugged, and black crystal finish 

 on arm and base unusually durable. 



Write for catalog describing this 

 and other models. 



Bausch ^ Lomb Optical Q. 



NEW YORK WASHINGTON SAN FRANCISCO 



CHICAGO ROCHESTER. N.Y. London 



Leading American Makers 

 of High Grade Optical Products. 



