XVlll 



CONTENTS. 



Page 



V. The Flower, - - - 62 



VI. The Nectaries, - - 67 



Vn. Sexual Parts, - - - 68 



VIII. The Fruit and Seed, - - 72 



PART II. 



TAXONOMY, OR THE THEORY OF CLASSI- 



FICxlTION. 



CHAP. I. General Observations, - - 81 



CHAP. II. Artificial Classification, - 84 



View of the Linnean System, - 87 



CHAP. III. On the Mutual Connections of Plants, 95 



I. Idea of Species,^ - - ib. 



II. Idea of a Genus, _ , - 98 



III. Idea of Tribes and Families, - 102 

 CHAP. IV. On the Natural Arrangement in Ge- 

 neral, -i - - 104 



CHAP. V. Theory of Natural Classification, 112 



I. Comparison of Organs, - - ib. 



II. On the Means wliiqh Nature affords for ena- 



bling us to know Organs, and thereby to 



avoid mistakes, - - 11 6 



A. Of Abortive Organs> - 118 



B. On Change and Degeneration of Parts, 121 



C. On the Union of Organs, - 12S 



III. On the Different Points of View under which 



an Organ, or a System of Organs, may be 



considered, - - ISO 



IV. On the Determination of the Value of Cha- 



racters, - - 137 



CHAP. VI. Natural Arrangement of Families, - 138 



PAKT III. 



PHYTOGRAPHY, OR DESCRIPTIVE BOTANY. 



I. Of the Generic Name, - - 1 45 



II. Of Trivial Names, - - 149 



