CONTRIBUTORS 



Esmond E. Snell, Ph.D. Professor of Chemistry, and Associate Director of 

 the Biochemical Institute, University of Texas, Austin, Texas. Eli Lilly- 

 Award, 1945; Mead Johnson & Co. Award, 1946; Osborne- 

 Mendel Award, 1951. 



S. Spiegelman, Ph.D. Professor of Bacteriology, University of Illinois, 

 Urbana, III. 



DeWitt Stetten, Jr., M.D., Ph.D. Associate Director in Charge of 

 Research, National Institute of Arthritis and Metabolic Diseases, 

 National Institute of Health, Bethesda, and Lecturer in Medicine and 

 Physiological Chemistry, The Johns Hopkins University, Baltimore, Md. 



D. M. Surgenor, Ph.D. Assistant Professor of Biological Chemistry, 

 Harvard Medical School, Boston, Mass. 



Hugo Theorell, M.D., Professor. Head of the Medical Nobel Institute, 

 Biochemical Department, Stockholm, Sweden. Nobel Prize, 1955. 



Irwin B. Wilson, Ph.D. Assistant Professor of Biochemistry, College of 

 Physicians and Surgeons, Columbia University, New York, N . Y . 



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