240 



THE MICROSCOPE. 



greatly in different instruments. That one is the best 

 which is simplest, the most solid and easily managed. 

 The stage (E), upon which the object is pla?3<i> should 



A, Eye-piece. 



B, Body. 



C, Collar. 



D, Object-glass. 



FIG 



E, Stage. 



F, Hinire. 



G, Mirror. 

 H, Stand. 



not be movable : it should be solid and firm. The 

 screw by which the focal distance is adjusted, and which 



