student’s microscope. 
31 
50. The form of Stiidewt’s Micro§copc, shown in figure 
11, lias the same tripod base, mirrors, and graduated draw-tube. 
Fig. 11. 
as the preceding, and the same lever movement of the stage. 
In addition, the stage revolves around a steady centre, which 
invariably coincides with the axis of the body. Beneath the 
CATALOGUE OF ACHROMATIC MICROSCOPES. 
