CONTENTS. 



FAGS 



I. FORESTRY 9 



II. CONDITIONS NECESSARY FOR THE GROWTH OP 



PLANTS 20 



III. THE WIDE DISTRIBUTION OF PLANT GERMS . 32 

 IV. CONDITIONS NECESSARY FOR THE GROWTH OF 



TREES 42 



V. THE FORMATION OF SOIL 50 



VI. THE INANIMATE ENEMIES OF THE FOREST . . 61 



VII. THE ANIMATE ENEMIES OF THE FOREST ... 71 



VIII. THE DESTRUCTION OF THE FOREST 81 



IX. THE EARTH'S OCEAN OF VAPOR 90 



X. KAIN 100 



XI. DRAINAGE 109 



XII. CLIMATE 119 



XIII. CLIMATE AS INFLUENCED BY THE PRESENCE OF 



THE FOREST 127 



XIV. PURIFICATION OF THE ATMOSPHERE 140 



XV. HAIL 147 



XVI. KEFORESTATION AND TREE-PLANTING .... 155 



XVII. THE BALANCE OF NATURE 164 



XVIII. PRIMER OF PRIMERS 177 



APPENDIX 209 



INDEX 245 



7 



