48 



CONSTRUCTION OF THE MICROSCOPE. 



two internal buttresses mounted on a strong tripod ; at the upper part, 

 and between the uprights, we have an axis, upon which the whole of the 

 upper part of the instrument turns, so as to enable it to take a hori- 

 zontal or vertical position, or any intermediate inclination, such, for 

 instance, as that shown in the drawing. This movable part is fixed to 



fig. 35. Baker's Compound Microscope. 



the axis near its centre of gravity, and consists of the stage F G ; the 

 arm K is screwed into the triangular bar, and carries the microscope 

 tube or body A, at the upper end of which is the eye-piece B, and at 

 the lower the object-glasses c. The stage F G has rectangular move- 



