53 



THE MICROSCOPE. 



flowers are red and white in showy terminal cymes, and they have 

 an agreeable honey-like flavor; the fruit is a woody bi\ialved cap- 

 sule, containing several winged seeds. The stems are considerably 

 branched and produce large compound leaves. The beautiful dark 

 green leaves are bipinatified, being divided into from six to eight 

 pinnae, while each pinna is divided into from eight to twelve pin- 

 nules or leaflets. The illustration represents only one branch or 



Fig. 2. Epidermal Hairs and Glands from the Caroba Leaf, a. Hairs from the Under 



Surface. b s Hairs from the Upper Surface, a and /' Magnified ioo diameters. 



c. Glands. Magnified 500 diameters. 



pinna of the leaf (see fig. i). The leaflets toward the end of the 

 pinna are seen on the upper side, while the under side shows in the 

 others. Each leaflet is oval, sharply pointed at the apex and the 

 base, and with a smooth border. The upper surface of the com- 

 mercial leaflet is dark brown and smooth, while the lower surface is 

 much lighter in color, and with strongly marked midrib and veins; 



