BROWNING'S ROTATING STAND. 



99 



meter screw fine-adjustment, glass concentric rotating 

 stage, double mirror, universal sub-stage fitting to carry 



FIG. 55. Broicning's Improved Rotating Microscope. 



all apparatus, and one eye-piece, packed in mahogany 

 case, for the small price of 3 10s. 



An excellent form of binocular, in which the lowest 

 H 2 



