28 
THE FIRST BOOK OF BOTANY. 
witH these two questions either printed or written 
upon them, as seen in schedule first. Answer these 
questions about my leaf, as you see they have been 
answered about Fig. 9. Pin each bit of paper to the 
leaf it describes, and give all to your teacher. This 
will be at once an exercise in botany, in writing,* and 
in spelling ; and it will show your teacher what use 
you have made of the time taken to study plants. 
EXERCISE III. 
The Margin of Leaves* 
Look at the edges of your leaves. Are they all 
alike ? Are all that grow on the same plant alike ? 
The edge of a leaf-blade is called its margin . 
Some of the most common forms of margins are 
here given. Compare your leaves with these figures 
to find wdiich they are most like. The name of the 
form is given below the figure, and you are also told 
how you may name those margins that are not like 
the diagrams. 
Fig. 10. 
Fig. 11. 
Fig. 12. 
Ed tire. 
Serrate. 
Crenate, 
