Vlll CONTENTS. 



FOURTH BOOK. 



OKGANOLOGY .... 454 



CHAPTER I. 



GENERAL ORGANOLOGY. 183 216. 



SECTION I. 



General Phenomena in the Life of the entire Plant. 



A. Life of the entire Plant . . . . . .458 



B. Germination . . . . . . . 460 



C. Of Growth . . . . ;.- . .464 



D. The Process of Nutrition . . . V . . 468 



I. The Food of Plants in general .... 470 



II. On the Absorption of Food and Excretion . . 493 



1. Of the Form of the Matter . . . .493 



2. Of the Form of the Processes . . . 494 



III. Assimilation of Food . . . . .504 



IV. External Conditions of the Absorption and Assimilation 



of Food . . . , . . 508 



V. Motion of the Sap through Plants . . .515 



E. Reproduction of Plants ...... 524 



F. Death of the entire Plant ..... 536 



SECTION II. 



Special Phenomena in the Life of the entire Plant. 



A. Development of Heat . .... 539 



B. Development of Light ...... 542 



C. Movements of the Parts of Plants .... 544 



CHAPTER II. 



SPECIAL ORGANOLOGY. 217 224. 



A. Organs of Vegetation. 



a. Angiosporse ....... 555 



b. Gymnosporac ....... 555 



B. Organs of Reproduction. 



a. Cryptogamia ....... 557 



b. Phanerogamia ....... 558 



Conclusion . ... . 559 



APPENDIX. 



A. Analytical Papers ...... 560 



B. List of Old Trees . . . .566 



C. Containing the New Passages in the Third German Edition of the 



First and Second Books ..... 567 



D. On the Use of the Microscope ..... 575 



INDEX . . .601 



