CONTENTS 



Page. 



Chapter I. — Introductory 9 — 21 



Chapter II.— The Round of Plant Life 22—114 



Section 1 — The Behavior of Seeds toward Water 22 — 24 



2 — Germination 24 — 32 



3— The Plantlet 32— 48 



4— The Inner Structure of the Plantlet... 48— 56 

 5 — The Water of Plants and its Move- 

 ments 57 — 64 



6— The Root and the Soil 64—77 



7— The Stem 78— 80 



8— The Leaves 81— 84 



9— The Buds 84— 93 



10— The Flower 9.3—101 



11— The Fruit and the Seed 101—104 



12— The Gathering and Storing of Seeds.. 104—109 

 13 — The Decline of Growth and the Rest 



Period 109—114 



Chapter III. — The Plant as Affected by Unfavorable 



Environment 115 — 180 



Section 1 — The Plant as Affected by Unfavorable 



Temperature 115 — 132 



A— By Excessive Heat 115—118 



B— By Excessive Cold 118—124 



Section 2 — Methods of Averting Injury by Cold.. 124 — 1.32 

 A — During the Dormant Period 124 — 126 

 B — During the Growing Period 126 — 122 

 Section 3 — The Plant as Affected by Unfavorable 



Water Supply 133—140 



A— By Excessive Water 133—137 



B— By Insufficient Water 187—140 



