64 SPEAKERS AND CHAIRMEN 



SECTION A. PHYLOGENY. (Hall 2, September 21, 3 p. w.) 



CHAIRMAN: PROFESSOR T. H. MORGAN, Columbia University. 

 SPEAKERS: PROFESSOR HUGO DE VRIES, University of Amsterdam. 

 PROFESSOR CHARLES O. WHITMAN, University of 



Chicago. 

 SECRETARY: 



SECTION B. PLANT MORPHOLOGY. (Hall 2, September 22, 10 a. w.) 



CHAIRMAN: PROFESSOR WILLIAM TRELEASE, Washington Univers- 

 ity, St. Louis. 



SPEAKERS: PROFESSOR FREDERICK O. BOWER, University of Glas- 

 gow. 



PROFESSOR KARL F. GOEBEL, University of Munich. 

 SECRETARY: PROFESSOR F. E. LLOYD, Columbia University. 



SECTION C. PLANT PHYSIOLOGY. (Hall 4, September 22, 3 p. TO.) 



CHAIRMAN: PROFESSOR CHARLES R. BARNES, University of Chicago. 

 SPEAKERS: PROFESSOR JULIUS WIESNER, University of Vienna. 

 PROFESSOR BENJAMIN M. DUGGAR, University of Mis- 

 souri. 

 SECRETARY: PROFESSOR F. C. NEWCOMB, University of Michigan. 



SECTION D. PLANT PATHOLOGY. (Hall 7, September 23, 10 a. TO.) 



CHAIRMAN: PROFESSOR CHAS. E. BESSEY, University of Nebraska. 

 SPEAKERS: PROFESSOR JOSEPH C. ARTHUR, Purdue University. 



MERTON B. WAITE, U. S. Department of Agriculture. 

 SECRETARY: DR. C. S. SHEAR, U. S. Department of Agriculture. 



SECTION E. ECOLOGY. (Hall 7, September 23, 3 p. TO.) 



CHAIRMAN: 



SPEAKERS: PROFESSOR OSKAR DRUDE, Kon. Technische Hoch- 



schule, Dresden. 



PROFESSOR BENJAMIN ROBINSON, Harvard University. 

 SECRETARY: PROFESSOR F. E. CLEMENTS, University of Nebraska. 



SECTION F. BACTERIOLOGY. (Hall 15, September 24, 10 a. TO.) 



CHAIRMAN: PROFESSOR HAROLD C. ERNST, Harvard University. 

 SPEAKERS: PROFESSOR EDWIN O. JORDAN, University of Chicago. 



PROFESSOR THEOBALD SMITH, Harvard University. 

 SECRETARY: DR. P. H. Hiss, JR., Columbia University. 



SECTION G. ANIMAL MORPHOLOGY. (Hall 2, September 21, 10 a. TO.) 



CHAIRMAN: DR. LELAND O. HOWARD, Department of Agriculture, 



Washington, D. C. 

 SPEAKERS: PROFESSOR CHARLES B. DAVENPORT, University of 



Chicago. 

 PROFESSOR ALFRED GIARD, The Sorbonne; Member 



of the Institute of France. 

 SECRETARY : PROFESSOR C. H. HERRICK, Dennison University. 



