CH. IXa\ 



PROJECTION MICROSCOPE 



FIG. 212 B. Leitz large projection apparatus with the microscope turned aside 

 and the 300 mm. equivalent focus objective in place for projecting a lantern slide. 



There are three objectives on a large revolving nose-piece. These serve for 

 condensers for different powers in micro-projection, and when the microscope is 

 turned aside, for projecting lantern slides and other large objects. 



FIG 2 f3 A. Sectional view of the condenser 

 system and water bath of the Bausch & Lomb 

 Optical CoSs Projection apparatus (from the 

 Journal of Applied Microscopy, VI, /poj). 

 This condenser system is used also in the ap- 

 paratus show in Fig. 204. 



