12 TABLE OF CONTENTS 



PAGE 



Chapter 5. The Chemistry of Photosynthesis 256 



1. The Theories Regarding the Reduction of Carbon Dioxide 

 and Water to Carbohydrates — a. Organic Acids — b. Formalde- 

 hyde — The Baeyer Theory — c. The Condensation of Formalde- 

 hyde by Means of Alkali — d. The Condensation of Formaldehyde 

 with Weak Alkalies and under the Influence of Light — <?. GlycoUic 

 Aldehyde—/. The Theory of Willstatter and Stoll— ^r. The Black- 

 man Reaction — h. Other Theories — 2. Attempts to Find in the 

 Plant Substances Which Form the Intermediate Steps Demanded 

 by the Theories — a. Formaldehyde — b. Other Intermediate 

 Products — 3. Feeding Experiments — a. Formaldehyde — b. Other 

 Substances from which Sugar can be Produced by the Plant — 

 4. The Reduction of Carbon Dioxide — a. The Direct Reduction 

 of Carbon Dioxide — b. The Reduction of Carbon Dioxide in the 

 Presence of "Catalysts" and Chlorophyll Preparations — 5. The 

 Role of Water in Photosynthesis — 6. The Absorption of Carbon 

 Dioxide by the Unilluminated Leaf. 



Chapter 6. The Energy Relations in Photosynthesis . . . 315 



1. The Energy Used in Photosynthesis — 2. The Storing of 

 Energy by Crop Plants. 



Chapter 7. Chlorophyll and the Chloroplasts 338 



1. Chlorophyll — a. The Extraction and Separation of the Leaf 

 Pigments — b. The Physical Properties of the Leaf Pigments- — 

 c. The Chemical Properties of the Leaf Pigments — d. The Quan- 

 titative Estimation of Leaf Pigments — e. The Role of Chloro- 

 phyll in Photosynthesis — 2. The Chloroplasts. 



Author Index 383 



Subject Index 389 



