X CONTENTS 



XXII. APPLICATIONS OF BOTANY 246 



Agronomy Horticulture Forestry Plant Breeding 

 Bacteriology Plant Pathology Pharmaceutical Botany 

 Agricultural Plants Ancient Agriculture in America 

 Plant Improvements. 



PART III 



XXIII. PRINCIPLES OF CLASSIFICATION 257 



XXIV. THALLOPHYTES THE ALG.E 260 



XXV. THALLOPHYTES THE FUNGI 273 



XXVI. BRYOPHYTES 289 



XXVII. PTERIDOPHYTES 297 



XXVIII. SPERMATOPHYTES 303 



XXIX. MONOCOTYLEDONES 312 



XXX. DICOTYLEDONOUS PLANTS . 331 



