Ridging the land 98
Time to plow 98
Bare fallow 100

XII.--HARROWING AND ROLLING 101
Harrowing:
Why we harrow
Time to harrow 101
Types of harrows 102
Rolling 106

XIII.--LEAVES 108
Facts about leaves 108
The uses of leaves to plants:
Transpiration
Starch making
Digestion of food
Conditions necessary for leaf work 109
How the work of leaves is interfered with 115

XIV.--STEMS 120
What are stems for? 120
How the work of the stem may be interfered with 126

XV.--FLOWERS 128
Function of flowers 128
Parts of flowers 129
Functions of the parts:
Cross pollination 130
Value of a knowledge of the flowers 134