-4 - EXAMINATION OF 



COMMON OBJECTS. 



2. Paper. Tear off a small piece of paper and mount it for microscopical examination 

 by placing it on a slide, adding a drop of water, and covering it with a cover-glass. This 

 is called a " fresh preparation." Examine it under both low and high powers and draw 

 what you see. The. black circles which may bo present in this and the following preparations 

 are air-bubbles. 



3. Hair. Make a similar fresh preparation of hair from your head. Draw what 

 you see under both powers. 



