CONTENTS 



I. Enzymes and the Synthesis of Proteins 



By John H. Northrop 3 



II. Molecular Morphology and Growth 



By Francis O. Schmitt 49 



III. Plant Growth Hormones 



By Kenneth V. Thimann 61 



IV. Unidentified Vitamins and Growth Factors 



By Karl Folkers ^2 



V. The Kinetics of Growth of Microorganisms 



By C. B. van Niel 91 



VI. Cellular Metabolism and Growth 



By E. S. Guzman Barron 106 



VII. Differential Growth 



By Paul Weiss 135 



VIII. Problems of Organization 



By J. S. Nicholas 187 



IX. Neoplastic Abnormal Growth 



ByC.P. Rhoads 217 



X. The Adrenal Gland, a Regulatory Factor 



By C. N. H. Long 266 



Index 285 



76922 



