EXERCISE I 

 USE OF THE MICROSCOPE 



Before beginning work, it is necessary to become familiar with the 

 microscope and the method of using it. The first laboratory period will 

 be devoted to this. 



Identify the stand, the oculars, the tube, the objectives, the stage, 

 the diaphragm, the mirror, the foot, coarse adjustment, fine adjustment, 

 clips. Study the illustration, Fig. 2, for other features. 



Oov r 



FIG. 2. A modern microscope, with its parts named. (Courtesy Spencer Lens Co.) 



Understand perfectly how to change from "low power" to "high 

 power," and the reverse; also which direction to turn the coarse adjust- 

 ment and the fine adjustment to raise or to lower the body tube. 



In using the microscope, note especially the following points: 



5 



