via CONTENTS. 



Ehizoma or Rootstock . 106 



Tuber 107 



Corm ... 108 



Bulbs and Bulblets 109 



Consolidated Forms of Vegetation . . . .110 



V Sect. IV. The Internal Structure of the Stem . Ill 



■i/ Sect. V. The Endogenous or Monocotyledonous Stem 114 



s/ Sect. VI. The Exogenous or Dicotyledonous Stem 116 



The First Year's Growth .... 



The Wood 



The Bark 



The Cambium-Layer .... 



Annual Increase of the Wood 



Sap-wood and Heart^wood 



The Bark ; its particular Structure 



The Living Parts of a Tree, &c. 



The Plant a Composite Being, Individuality 



118 

 119 

 120 

 122 

 123 

 124 

 126 

 129 

 131 



Comparison of Endogenous with Exogenous Structure . 132 



CHAPTER v.— OF THE LEAVES 133 



Sect. I. Their Arrangement 133 



Phyllotaxis 133 



Vernation or Prsefoliatiou 143 



Sect. H. Their Structure and Conformation . . 145 



Anatomy of the Leaf 145 



Stomata . 150 



Development of Leaves 153 



The Venation and Forms of Leaves 154 



Compound Leaves 163 



Leaves of Peculiar Conformation or Transformation . . 165 



The Petiole or Leafstalk, Phyllodia, Stipules . . . 1 70 



Sect. in. The Duration op Leaves ; their Action, etc. 172 



Fall of the Leaf 173 



Death of the Leaf 174 



Exhalation from the Leaves, Rise of the Sap . . . 175 



