68 



LABORATORY MICROSCOPES 



\CH. II 



Fig 67 



Fig 67a. 



Figs. 67, 67.1. The removable mechanical stage of the Bausch u~ Lomb Opti- 

 cal Company. In Ike upper figure it is in position on the stage of the microscope ; 

 in the lower figure only the clamping pari is in position, the res/ having been 

 removed to leavt the stage of the microscope free. 



