x CONTENTS 
PAGE 
Mineral Nutrients; Photosynthesis; Carbohydrates; Pro- 
teins; Root Nodules; Hysterophytic Plants; Respiration; 
Anaerobic and Aerobic Respiration; Fermentation; Tem- 
perature Relations; Effect of Poisons. Growth; Relaticn 
to Nutrition, 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 
Puytum I. MyxopnycrarE: SLIME ALGAE 
General Characters. Two Classes. Blue Greens; Unicellular; 
Filamentous. Bacteria. Higher Blue Greens ... . 163 
