TABLE OF CONTENTS. XUl 



CHAPTER II. 



FAOB 



Elonoation ...... 433 



Elongation of root, 434 Of inflorescence, 434 Of flower- 

 Btalks, 435 Of leaves, 437 Of parts of flower, 438- Of thala- 

 mus and placenta, 440 Apostasis, 440. 



CHAPTER III. 

 Enation ...... 443 



Excrescences from axile organs, warts, 444 Enation from 

 leaves, 445 From sepals, 448 From petals, 448 Catacorolla, 

 451 Enation from stamens, 453 From carpels, 453. 



PART II. Atrophy ... .454 



CHAPTER I. 



AfiOBTiON ...... 455 



Abortion of axile organs, 455 Of receptacle, 457 Of leaves, 

 458 Of perianth, calyx, and corolla, 460 Of stamens, 463 

 Of pollen, 463 Of pistil, fruit, &c., 464 Of ovules, 466 De- 

 pauperated ferns, 466 General remarks, 467. 



CHAPTER II. 



Deoenebation ...... 470 



Formation of scales, 470 Of hairs, 472 Of glands, 473 Of 

 tendrils, 473. 



GENERAL CONCLUSIONS. 



General morphology of the leaf and axis, 476. Homology, 

 476 Special morphology, 479 Calyx-tube, 480 Androecium, 

 482 Inferior ovary, 482 Placentation, 483 Structure of the 



