TABLE OF OONTENTS. Xill 
CHAPTER II. 
PAGE 
ELONGATION ; ; 5 : . 433 
Elongation of root, 434—Of inflorescence, 434—Of flower- 
stalks, 435—Of leaves, 437—Of parts of flower, 438—Of thala- 
mus and placenta, 440—Apostasis, 440. 
CHAPTER III. 
ENATION : 7 : : . 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.—Arrorny ; : . 454 
CHAPTER I. 
ABORTION : ; : : ; . 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. 
DEGENERATION . : : . 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— Andreecium, 
482—Inferior ovary, 482—Placentation, 483—Structure of the 
