x CONTENTS 



PAGE 



Mineral Nutrients; Photosynthesis; Carbohydrates; Pro- 

 teins ; Root Nodules ; Hysterophy tic Plants ; Respiration ; . 

 Anaerobic and Aerobic Respiration; Fermentation; Tem- 

 perature Relations; Effect of Poisons. Growth; Relation 

 toNutrition,Temperature,Light. Reproduction ; Asexual, 

 and Sexual; Behavior of Chromosomes, Diploid and Hap. 

 loid Number; Inheritance; Mendelism; Natural Selec- 

 tion; Survival of the Fittest; Variations; Mutations; 

 Evolution; Phylogeny; Plant Breeding. Movements; 

 Hygroscopic Movements; Protoplasmic Movements; 

 Turgor Movements; Growth Movements, Nutation, 

 Tropisms, Phototropism, Geotropism, Thigmotropism, 

 Chemotropism, Hydrotropism. Pathology; "Physiolog- 

 ical Diseases;" Diseases due to Parasites 71 



CHAPTER V 

 THE CHEMISTRY OF THE PLANT 



Inorganic Acids and Salts. Organic Acids. Alcohols. Fats 

 and Fatty Oils. Aromatic Oils and Camphors. Carbo- 

 hydrates; Monosaccharids ; Disaccharids; Trisaccharids ; 

 Tetrasaccharids ; Polysaccharids. Glucosides. Alkaloids. 

 Protein Group. Enzymes. Miscellaneous Substances . 139 



CHAPTER VI 

 THE CLASSIFICATION OF PLANTS 



Number of Species. Relationship. Species and Genera. 

 Higher Groups; Families; Orders; Classes; Phyla. Evo- 

 lution. Origin of Phyla. The Place of Plants in Time. 

 Table of Geologic Time Divisions 157 



CHAPTER VII 

 PHYLUM I. MYXOPHYCEAE: SLIME ALGAE 



General Characters. Two Classes. Blue Greens; Unicellular; 



Filamentous. Bacteria. Higher Blue Greens .... 163 



