CONTENTS. XlX 



BOOK IL 



Page 



Of the PHYsioLoeioAL Pkinoiplks upon which the Operations 



OF HoilTICULTUaE ESSBNTIALLT DEPEND . . . .101 



CHAPTER I. 

 Of Bottom Heat ' . . IM 



CHAPTEE II. 

 Of the Moisture of the Soil. — 'Watermg .... 113 



CHAPTER IIL 

 Of Atmospherical Moisture and Temperature . . . 125 



CHAPTER IV. 

 Of Ventilation 160 



CHAPl'ER V. 

 Of Seed sowing 169 



CHAPT'ER VI. 

 Of Seed-saving 169 



CHAPTER VII. 

 Of Seed-packing 179 



CHAITER VIII. 

 Of Propagation by Eyes and Knaurs 184 



CHAPTER IX. 

 Of Propagation by Leaves 190 



CHAl'TER X. 

 Of Propagation by Cuttings 199 



CHAPTER XI. 

 Of Propagation by Layers and Suckers , . . , 201 



