22 



The Microscope 



Figs. 19, 20, 21, and 22. Setting up a freshman microscope. Fig. 19. The microscope 

 is inclined to a suitable position. Fig. 20. The mirror is adjusted to throw light into 

 the XlO objective. Fig. 21. A slide is placed on the stage under the clips. Fig. 22. The 

 tube is racked down with the coarse adjustment until the object comes in focus. 



Stand. A horseshoe foot on which is mounted an inclinable body com- 

 posed of three parts-the mirror holder, the stage, and the tube carrier- 

 all rigidly connected. The plastic stage is furnished with two clips. The 

 tube carrier is furnished with a rack-and-pinion coarse adjustment with 

 the aid of which the tube may be moved up and down over a distance 



