CONTENTS. XI 



CHAPTER XI. — OP THE SEED 320 



Sect. I. Its Structure and Parts 320 



The Nucleus and Albumen 322 



The Embryo 323 



Sect. H. Germination 328 



CHAPTER Xn. — OF REPRODUCTION IN CRYPTO- 



GAMOUS OR FLOWERLESS PLANTS . . 330 



CHAPTER Xm. — OF THE SPONTANEOUS MOVEMENTS 



AND VITALITY OF PLANTS .... 340 



Special Directions 341 



Sensible Movements from Irritation .... 345 

 Spontaneous or Automatic Movements . . . .347 



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



Locomotion of Adtdt 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 H. — OF THE NATURAL SYSTEM OF BOT- 

 ANY 366 



Sketch of the Classes, &c 369 



Nomenclature of Orders, Tribes, &c 373 



