FUNCTIONS OF LEAVES 177 
189. Review Summary of Minute Structure of Leaves.! 
General structure, distribution of 
parenchyma, and prosenchyma 
Layers of tissue seen on a cross- ( 
Re Oke Ghee Gah a 
Structure of epidermis 
Structure of stomata 
Distribution of stomata 
Structure and distribution of 
chlorophyll bodies 
190. Review Summary of Functions of Leaves. 
fibro-vascular -bundles 
epidermis . 
stomata 
air spaces . 
palisade-cells . 
spongy parenchyma 
waxy coating. 
hairs 
Principal uses of . 
Substances received by the leaf. . . . from the es 
from the soil. 
Substances manufactured by the leaf . 
Substances given off by the leaf ath et a 
| into the stem 
Mineral substances accumulated in the leaf 
Statistics in regard to transpiration 
Statistics in regard to starch-making . 
1 Illustrate with sketches and diagrams. 
