OBJECT LESSONS IN BOTANY. 
LESSON I. 
THE LEAF, AND ITS PARTS. 
blade, 
Fig. 1. Leaf of the Quince. 
1. Wn have before us the 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—4, p, ss. 
2. The upper part, 2, is broad and thin, and is called the 
