+Leaves+ 97

A leaf a digestive organ—Petiole and blade venation— Monocotyledons—Dicotyledons—Radical leaves—Phyllotaxis— Epidermis—Stomata—Influence of foliage upon climate—Eucalyptus— Mesophyll—Chlorophyllon—Pallisade tissue—Protoplasm—Absorption of carbon-dioxide—Jewel-weed—Alchemilla—Growing wheat—Vertical leaves of eucalyptus cork layer—Fall of the leaf—Useful products of trees.