CONTENTS 
I. The Potato Has Poisonous Rela¬ 
tives . 2 
II. Cotton Once Grew on Trees .... 4 
III. Trees May Be Poisoned . 6 
IV. Some Plant Relatives. 8 
V. Animals Help Plants . 10 
VI. Giant Grasses. 12 
VII. The Morning-Glory and the Ant 14 
VIII. Leaves Are Sugar Factories .... 16 
IX. Watermelons Are Gourds . 18 
X. The Indians Gave Us Rubber .. 20 
XI. Bananas Have No Seeds. 22 
XII. Plants Eat Sugar . 24 
XIII. Buds Are Understudies . 26 
XIV. Roots Are Pumps . 28 
XV. European Grapes Die in the East 30 
XVI. Cactus Water Barrels. 32 
XVII. The Origin of Seedless Oranges 34 
XVIII. Beans Originated in the Tropics 36 
XIX. The Sunflower Cousins. 38 
XX. The Acorn Trade-Mark. 40 
XXI. Elm-Tree Bouquets . 42 
XXII. The Earth’s Biggest Fruit - 44 
XXIII. The Oak Tree Comes to Town .. 46 
iii 
