L i$H * A THE FIRST BOOK OF BOTANY. 



EXERCISE I. 

 The Parts of a Leaf. 



THE beginner will gather some leaves, and find 

 out the names of their parts by comparing them with 

 the picture. 



FIG. 1. 



Blade. 



Petiole. 



s Stipules. 



BLADE. The flattened green part of the leaf. 

 PET'IOLE. The leaf-stalk. 



STIP'ULES. Small bodies at the base of the petiole, 

 that look more or less like leaves. 



NOTES FOR TEACHERS. The exercises begin with leaves, be- 

 cause they are the simplest and the most common parts of 

 plants, and because they present the greatest variety of forms, 

 and are most easily procured. The aim of the first exercise is 

 to teach the parts of a leaf and their names. It is likely that 

 the first gathering of leaves will be done carelessly, and that, 



