CONTENTS 



1. The Gene and Biochemistry page 



by G. W. Beadle 1 '\^ 



2. Viruses 



by W. M. Stanley 13 



3. Photosynthesis and the Production of Organic 



Matter on Earth by H. Gaffron 25 



4. The Bacterial Cell 



by Rene J. Dubos 49 ^ 



5. The Nutrition and Biochemistry of Plants 



by D. R. Hoagland 61 



6. Biological Significance of Vitamins 



by C. A. Elvehjem 79 



7. Some Aspects of Vitamin Research 



by Karl Folkers 89 



8. Quantitative Analysis in Biochemistry 



by Donald D. Van Slyke 109 



9. Enzymic Hydrolysis and Synthesis of Peptide Bonds 



by Joseph S. Frufon 123 



10. Metabolic Process Patterns 



by Fritz Lipmann 1 37 



1 1 . Biochemistry from the Standpoint of Enzymes 



by David E. Green 149 



12. Enzymic Mechanisms of Carbon Dioxide Assimilation 



by Severo Ochoa 165 



13. Hormones 



hy B. A. Houssay 1 87 ^^ 



VII 



O ^ 1 1^ 



