56 
10. 
11. 
12. 
138. 
STUDIES OF PLANT LIFE. 
Where is the path of the nutriment to the leaf 
mesophy]l ? 
Experiment 11. 
How does the evaporation of the transpiration affect 
the upward movement of nutriment (sap) ? 
Experiment 17. 
What is the source of odor of some leaves ? 
Explain color variations of foliage leaves. 
How do hairs differ in color, form, and structure, 
and what is their purpose ? 
