CONTENTS 



CHAPTER PAGE 



I. The various ways in which plants appeal to the interests 



AND MIND OF MAN. (Methods of Study in the Science of Botany) . . 1 

 II. The prevalence of green color in plants, and the reason why 



IT EXISTS. (Chlorophyll and Photosynthesis) 16 



III. The profound effect on the structure of plants produced 



BY THE NEED FOR EXPOSURE TO LIGHT. (Morphology and Ecology 



of Leaves and Stems) 47 



IV. The kinds of work that are done by plants, and the source 



OF THEIR POWER TO DO IT. (Respiration) 76 



V. The various substances made by plants, and the uses thereof 



TO them and to us. (Metabolism) 105 



VI. The substance which is alive in plants, and its many remark- 

 able qualities. (Protoplasm) 138 



VII. The ways in which plants draw into themselves the various 



materials they need. (Absorption; Roots) 165 



VIII. The ways in which substances are transported through 

 plants, and finally removed therefrom. (Transfer, Trans- 

 piration, Excretion) 198 



IX. The peculiar power possessed by plants to adjust their 

 individual parts to their immediate surroundings. (Irri- 

 tability) 224 



X. The various ways in which plants resist the hostile forces 



AROUND THEM. (Protection.) 256 



XI. The ways in which plants perpetu.-^te their kinds, and 



MULTIPLY THEMSELVES IN NUMBER. (Reproduction) 278 



XII. The MANY REMARKABLE ARRANGEMENTS BY WHICH PLANTS SECURE 



UNION OF THE SEXES. (Cross-pollination; Floivers) 303 



XIII. The ways in which plants increase in size, and form their 



VARIOUS PARTS. (Growth; physiological) 327 



XIV. The orderly cycles pursued in growth, and the remarkable 



RESULTS OF DISTURBANCE THEREOF. (Groivth; Structural) 352 



XV. The many remarkable arrangements by which plants secure 



CHANGE OF LOCATION. (Dissemination; Fruits) 378 



xi 



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