CONTENTS 



CHAPTKR PAUK 



I. INTRODUCTORY 1 



II. THE PLANT AS A WORKING MACIIINK 



III. ROOTS AND THEIR RELATIONS TO THE WORK OF PLANTS 'J< 



IV. MANUFACTURE, TRANSPORTATION, AND USE OF FOODS 



IN PLANTS 34 



V. THE STEM AND THE LEAK 56 



VI. SPECIAL FUNCTIONS AND FORMS OF STEMS .... 85 



VI F. BUDS AND BRANCHES !4 



VIII. TIMBER; FORESTRY 107 



IX. FLOWERS 125 



X. POLLINATION AND FERTILJ/ATION 134 



XI. FRUITS; SEEDS AND SEEDLINGS; SEED DISTRIBUTION. 15<> 



XII. PLANT BREEDING 173 



XIII. How PLANTS ARE CLASSIFIED 1 ( .)4 



XIV. THE BACTERIA 199 



XV. THE ALG*: 219 



XVI. FUNGI AND FUNGOUS DISEASES OF PLANTS .... 234 



XVII. MOSSES, LIVERWORTS, AND FERNS ....... 215'J 



XVII I. THE SEED PLANTS 282 



XIX. PLANT INDUSTRIES \ . . . . 308 



XX. WEEDS 333 



APPENDIX 343 



GLOSSARY 345 



INDEX . . 359 



vii 



