48 



CONSTaUCTION OP THE MICBOSOOPE. 



two internal buttresses mounted on a strong tripod j 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. ^afo/s Com2>o-und 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- 



