CONTENTS. XI 



CHAPTER XL — OF THE SEED 32 



Sect. I. Its Structure and Parts 320 



The Nucleus and Albumen 322 



The Embryo . . . . . . . . .323 



Sect. II. Germination 328 



CHAPTER XII. — OF REPRODUCTION IN CRYPTO- 



GAMOUS OR FLOWERLESS. PLANTS . . 330 



CHAPTER XIII. — OF THE SPONTANEOUS MOVEMENTS 



AND VITALITY OF PLANTS .... 340 



Special Directions 341 



Sensible Movements from Irritation .... 345 



Spontaneous or Automatic Movements . . . .34 7 

 Free Movements of the Spores of Algae .... 348 

 Locomotion of Adult Microscopic Plants .... 349 



PART II. 



SYSTEMATIC BOTANY. 



CHAPTER I. — OF THE PRINCIPLES OF CLASSIFICA- 

 TION 352 



Individuals 352 



Species 354 



Varieties, Races, Hybrids or Cross-breeds .... 355 



Genera 358 



Orders or Families, Classes, &c 359 



Characters 362 



Binomial Nomenclature 363 



Natural and Artificial Systems 365 



CHAPTER II. — OF THE NATURAL SYSTEM OF BOT- 

 ANY 386 



Sketch of the Classes, &c 369 



Nomenclature of Orders, Tribes, &c. . . . . 373 



