OBJECT LESSONS IN BOTANY. 



• LESSON I. 



THE LEAF, AND ITS PARTS. 



Fig. 1. Leal'uf Llic Quince. 



1. "We have before us tlie picture of a Quince leaf, care- 

 fully drawn and colored. It is of a rich green color, very 

 pleasant to the eye. Its outlines are full, even, and grace- 

 fully curved, and its upper surface is smooth and naked. 

 Although it is indeed but one leaf, yet it seems to be made 

 up of three parts — 5, j9, ss, 



2. The upper part, 5, is broad and thin, and is called the 



