2670 



PROJECTION MICROSCOPE 



FIG. 213 B. The Micro- Projection apparatus of the Bausch & Lomb Optical 

 Co. (From the Jour. Ap. Micr. Vol. VI.} 



FIG 213 C. End view of the Bausch & Lomb Projection apparatus showing 

 the means by which with the same instrument either the microscope or the ordi- 

 nary projection lens for lantern slides can be brought into position. In this figure 

 the microscope is in position. (From the Journal of Applied Microscopy, 

 Vol. VI.) 



