LIST OF CONTRIBUTORS 



Irvino W. Bailey, M.F., Sc.D. 



Professor of Plant Anatomy, Harvard University, 

 Cambridge, Mass. 



J. D. Bernal, M.A. 



University Professor of Physics, Birkbeck College, 

 University of London, London, England. 



Robert Chambers, M.A., Ph.D. 



Department of Biology, New York University, 

 New York, N. Y. 



C. M. Child, M.S., Ph.D., Sc.D. 



Emeritus Professor of Zoology, The University of 



Chicago, Chicago, 111.; Stanford 



University, Calif. 



Edwin G. Conklin, A.M., Ph.D., Sc.D., 

 LL.D. 



Emeritus Professor of Biology, Princeton Univer- 

 sity, Princeton, N. J. ; Executive Vice-presi- 

 dent, American Philosophical Society, 

 Philadelphia, Pa. 



Richard B. Goldschmidt, Ph.D., M.D., 

 Sc.D. 



Professor of Zoology, University of California, 

 Berkeley, Calif. 



Ross G. Harrison, Ph.D., M.D., Sc.D. 



Osborn Zoological Laboratory, Yale University, 



New Haven, Conn.; Chairman of the 



National Research Council, 



Washington, D. C. 



L. V. Heilbrunn, Ph.D. 



Associate Professor of Zoology, University of 

 Pennsylvania, Philadelphia, Pa. 



H. S. Jennings, Sc.D., Ph.D., LL.D. 



Professor Emeritus, Johns Hopkins University, 

 Baltimore, Md. ; Research Associate, De- 

 partment of Zoology, University of 

 California, Los Angeles, Calif. 



Charles A. Kofoid, A.M., Ph.D., Sc.D., 

 LL.D. 



Emeritus Professor of Zoology, University of Cali- 

 fornia, Berkeley, Calif. 



0. L. Sponsler, A.M., Ph.D. 



Professor of Botany, University of California, Los 

 Angeles, Calif. 



W. M. Stanley, M.S., Ph.D., Sc.D. 



Member, The Rockefeller Institute for Medical 

 Research, Princeton, N. J. 



Albert Szent-Gyorgyi, M.D., Ph.D. 



Professor of Medical and Organic Chemistry, De- 

 partment of Medical Chemistry, University 

 of Szeged, Szeged, Hungary 



C. V. Taylor, A.M., Ph.D. 



Herzstein Professor of Biology, Stanford Univer- 

 sity, Calif. 



Hugo Theorell 



Director, Biochemical Division, The Nobel Insti- 

 tute for Medicine, Stockholm, Sweden 



C. B. VAN NiEL, Chem.E., D.Sc. 



Professor of Microbiology, Hopkins Marine Sta- 

 tion of Stanford University, Pacific 

 Grove, Calif. 



F. W. Went, M.S., Ph.D. 



Professor of Plant Physiology, California Insti- 

 tute of Technology, Pasadena, Calif. 



