4 



CELLS. 



4. Moss. Examine a moss-leaf under both powers. Notice how the leaf is divided 

 into separate compartments called " cells." Draw what you see. 



5. Diatoms. Examine a drop of water containing diatoms which are plants composed 

 of one cell only. Draw examples of them under the high power. 



6. Animal Cells. Scrape the inside of your cheek with the back of your nail and 

 make a fresh preparation of the material obtained. Make drawings under the high power 

 showing the epithelial cells with nuclei. 



