CONTENTS xi 



PART II. ASSIMILATION OF CARBON DIOXIDE. 

 A. Photosynthetic Assimilation. 



PAGE 



52. General 302 



53. Structure and properties of the chloroplastid 312 



54. The products of photosynthesis 317 



55. Accumulation of the assimilatory products 322 



56. Photosynthesis of other carbon compounds 326 



57. Sources and optimal percentage of carbon dioxide 329 



58. Influence of the external conditions on photosynthesis 333 



59. Influence of light 339 



60. different rays of spectrum 342 



61. Theoretical 353 



62. Individual and specific peculiarities 356 



B. Chemosynthetic Assimilation. 



63- 361 



PART III. ABSORPTION OF ORGANIC FOOD. 



64. General 363 



65. Special adaptations 369 



66. Nutritive value of different carbon compounds 380 



67. Special selective power 387 



PART IV. THE ASSIMILATION OF NITROGEN. 



68. General view 388 



69. Assimilation of free nitrogen 393 



70. Nutritive value of different compounds of nitrogen 403 



71. Character of processes by which nitrogen is assimilated 407 



72. Localization of proteid-synthesis . . . 409 



PART V. THE ASH CONSTITUENTS. 



73. The essential elements 410 



74. Their functions 422 



75. Non-essential ash constituents 434 



76. Influence of the soil on distribution 438 



CHAPTER VIII 



CONSTRUCTIVE AND DESTRUCTIVE METABOLISM 



77. General 442 



78. The commoner metabolic products 45 1 



79. Constructive and plastic nitrogen compounds 457 



80. Nitrogenous metabolism 461 



8 1. (continued] 465 



82. Carbohydrates and fats 468 



83. Composition of the cell-wall 480 



84. Formation and modification of the cell-wall 482 



85. Organic acids 485 



86. (continued) 487 



