MICROSCOPICAL DIAGNOSIS. 



Fig. i. Compound Microscope. {Bausch 6 Lowb.) 



A, the base or foot ; B, the body ; C, the draw-tube ; D, the arm ; E, the collar : 

 F, the coarse adjustment ; G, the fine adjustment : H, the stage : I, the object-carrier; 

 K, the diaphragm; 1, the mirror ; 2, the eye-piece ; 3, the objective. (Cut one-third of 

 actual size.) 



the instrument. The coarse adjustment is affected in the cheaper 

 stands by sliding the body within the collar. The microscope 

 shown in the engraving has the "rack and pinion" coarse adjust- 

 ment. In some stands this adjustment consists of a delicate watch 

 chain, controlled by a large milled head, on either side of the tube. 

 The Fine Adjustment "(1." This is one of the most essential 

 parts of a stand, and it should be carefully examined by the pur- 



