XIV CONTENTS. 



PAGE 



a. Criticism of Schultz's doctrine of the Anaphyta of 



the plant . . . .102 



b. Criticism of E. Meyer's and other views of the building 



up of the plant out of leaves ; and also of Steenstrup's 

 view of the Alternation of Generations in the plant 106 



c. Relation of the stem to leaf-formations . .108 

 Explained by the examination of the fundamental 



organs of the plant . . . 109 



d. Course of formation of the leaf . . .112 



e. Observations on Phyllotaxy . . . 116 



in. CELL-FORMATION, constituting the immediate focus of the pheno- 

 mena of Rejuvenescence . . . .121 



1. Formation of the Cell, generally . . .123 



a. Departure of the plant and of the Vegetable kingdom from 



the simple cell . . . .124 



a. Unicellular plants in the different senses of the 



term . . . .124 



j8. Graduated succession of Multi-cellular plants . 130 



b. The single cell, examined by itself . . .155 



a. The various meanings of the word Cell . . 155 



/3. Membrane and contents of the Cell . .155 



y. Cells without membrane . . .156 



S. Coat of the contents (primordial utricle) . ,156 



t. Further subdivision of the contents . . 169 



i. Nucleus ... .174 



2. Destruction of the Cell, a preparatory condition to its Reju- 



venescence . . . . .176 



A. The Cell -membrane . . . .176 



a. Dissolution of this . . . 177 

 a. Through tearing . . . 177 

 j8. Through complete peeling (Skinning of the cell) 180 

 y. Escape of the Rejuvenescent cell from the 



old coat (demonstrated more particularly in 

 the active gonidia of the Algae) . .182 



8. Examples of imperfect liberation of gonidia . 387 



b. Softening and Solution of the Cell-membrane . 189 



B. Processes of Destruction in the contents of the cell 195 



a. Solution of Starch .... 396 



b. Disappearance of Fat . . . . 202 

 Caused by previous desiccation . . 205 

 (Illustrated by the history of Chlamidococcus and 



Chlamidomonas) .... 205 



