40 LEAVES 
many prominent points does it contain? Where do the 
large veins ending in the points originate? 
Make an outline drawing of the under surface of a 
small maple leaf (1x), represent the large veins of the 
entire leaf, and all the veins of a small portion. 
As an example of pinnately netted veined leaves, 
beech leaves will be studied. In the study of a beech leaf 
follow the above outline and draw a leaf as directed there. 
Following the same outline, study and draw a leaf 
of wandering-jew (Tradescantia), which is a good ex- 
ample of parallel veined leaves. 
All the leaves studied thus far are simple; a petiole 
bears but a single blade. Many plants have compound 
leaves in which a petiole may bear several blades or leaf- 
lets. 
Leaves may be pinnately compound or palmately 
compound. As an example of the former study a locust 
leaf. How many leaflets has it? Is the number of leaf- 
lets the same in all leaves? Why call it pinnately com- 
pound? Answer this question by studying the following 
leaves and making outline drawings of each (14x) in the 
order mentioned: elm, oak, dandelion, locust. 
As a typical specimen of palmately compound leaves, 
study a horse-chestnut or woodbine leaf. How many 
leaflets does a single petiole bear? Why call these 
leaves palmately compound? ‘Try to answer this ques- 
tion by studying and making outline drawings (%4x) 
of the following in the order mentioned: woodbine, or 
horse-chestnut, cut leaf maple, cheese-weed, Nasturtium. 
Make a special study of a large number of red raspberry 
and blackberry leaves out of doors. Do all the leaves 
