X CONTENTS 



PART II. 

 INTERNAL MORPHOLOGY (ANATOMY). 



CHAPTER ""^ 



IX. The plant cell : Cell-division : Tissues . . 104 



The cell, 105; Cell-division; Continuity of protoplasm, no; 

 Tissues, III. 



X. The anatomy of the stem, root and leaf . 113 



The herbaceous stems of dicotyledons, 113 ; The perennial woody 

 stems of dicotyledons, 122 ; Stems of monocotyledons, 136 ; The 

 root, 140; The green foliage-leaf, 144; The growing-points of 

 stems and roots, 148. 



PART III. 

 PHYSIOLOGY OF PLANTS. 



XI. The chemical composition of plants . .152 



Carbohydrates, 155 ; Fats and fixed oils, 163 ; Volatile or essential 

 oils, 164 ; Organic acids, 164 ; Proteins or Albuminoids, 165 ; 

 Amides, 166 ; Alkaloids, 167. 



XII. The composition of plants {continued) . .168 



The elementary constituents of plants, 168; Water-culture, 169; 

 Essential elementary constituents of plants, 171 ; Non-essential 

 elementary constituents, 175. 



XIII. Osmosis; absorption of water . 177 



Osmosis, 177 ; Absorption of water, 182 ; Exudation pressure ; 

 Root pressure ; ' bleeding ' of plants, 186. 



XIV. Transpiration : The transpiration-current . 191 



Transpiration, 191 ; Transpiration-current, 198. 



XV. The absorption of food materials . . 201 



Food and food-materials, 201 ; Food-materials and their ab- 

 sorption, 202. 



XVI. ' Carbon-fixation,' 'Assimilation' or 'Photo- 

 synthesis' . . , . . .208 



