CONTENTS. 



CHAPTER. PAGE. 



I. INTRODUCTION 1 



II. FOLIAGE LEAVES: THE LIGHT-RELATION . . .6 



III. FOLIAGE LEAVES : FUNCTION, STRUCTURE, AND PROTECTION 28 



IV. SHOOTS 53 



V. ROOTS 89 



VI. REPRODUCTIVE ORGANS ....... 109 



VII. FLOWERS AND INSECTS 123 



VIII. AN INDIVIDUAL PLANT IN ALL OF ITS RELATIONS . . 138 



IX. THE STRUGGLE FOR EXISTENCE ..... 142 



X. THE NUTRITION OF PLANTS .... ^ 'V . . 149 



XI. PLANT SOCIETIES : ECOLOGICAL FACTORS . . . 162 



XII. HYDROPHYTE SOCIETIES . . . . . . 170 



XIII. XEROPHYTE SOCIETIES ....... 193 



XIV. MESOPHYTE SOCIETIES 230 



XV. HALOPHYTE SOCIETIES ....... 249 



INDEX 257 



