TABLE OF CONTENTS 



CHAPTER I 



WHAT THE PLANT IS MADE OF 



PAQK 



Elements present in the Plant. The Chief Compounds form- 

 ing Plant Tissues — Carbohydrates, Fats, Proteins, a- Pro- 

 teins, and Ash. The Growth of a Plant from a Seed ; 

 the Embryo and the Food Store. Conditions necessary 

 for Germination — Water, Warmth, Air. How Materials 

 are moved to the Growing Parts of a Plant. Seed 

 Testing ....... i 



CHAPTER II 



THE WORK OF THE LEAF 



The Increase of Weight in a Growing Plant is derived from 

 the Air. Plants split up Carbon Dioxide and give off 

 Oxygen. Purification of the Air by Plants. Formation 

 of Starch in the Green Leaf. Motive Power supplied 

 by Light All parts of the Living Plant are also 

 breathing. Necessity of Leaves to the Growth and 

 Ripening of the Plant. The Leaves of the Plant give 

 off Water. How much Rainfall is required by Crops . 19 

 ix 



