356 E. M. NELSON ON THIi EVOLUTION OF THE MICROSCOPE. 



bar it is obvious that when the instrument is inclined the stage 

 is also inclined with it. This feature is totally distinct from the 

 " telescope mount/' and is one specially important in the evolu- 

 tion of the microscope. 



(To be continued.) 



[The Editor expresses his obligation to the publishers of the 

 German edition of " Harting on the Microscope " for Figs. 3, 



7, 8 and 9.] 



