TABLE OF CONTENTS. xiil 



BOOK II. 



Pag-e 



THE PHYSIOLOGY OF PLANTS 367 



Chap. I. Absorption 367 



II. The Circulation in Plants ...377 



III. The Respiration of Plants 386 



IV. Transpiration in Plants 392 



V. Growth 404 



VI. The Secretions 408 



VII. The Sleep of Plants 428 



VIII. Vegetable Sensibility 432 



IX. The Movements of Plants 441 



X. Physiology of Flowers 447 



XI. The Nuptials of Plants 458 



BOOK III. 



THE SEED AND GERMINATION T 474 



BOOK IV. 



EXTREMES IN THE VEGETABLE KINGDOM 486 



Chap. I. The Lichen Rock and the Virgin Forest 486 



II. Giants of the Vegetable Kingdom 494 



III. Vegetable Longevity 507 



IV. Density of Plants 518 



BOOK V. 



MIGRATION OF PLANTS . . 520 



GEOLOGY. 



BOOK I. 



FORMATION OF THE GLOBE . . . . , 537 



Chap. I. Appearance of Animals and Plants ...;..... 537 



II. Primary Epoch . * . 541 



III. Transition Period 543 



IV. Secondary Epoch 551 



V. Tertiary Epoch . 5H3 



VI. Quaternary or Post-Tertiary Period 570 



