64 SPEAKERS AND CHAIRMEN 



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



CHAIRMAN : 



SPEAKERS: 



SECRETARY: 



PROFESSOR T. H. MORGAN, Columbia University. 

 PROFESSOR HUGO DE VRIES, University of Amsterdam. 

 PROFESSOR CHARLES O. WHITMAN, University of 

 Chicago. 



SECTION B. PLANT MORPHOLOGY. (Hall 2, September 22, 10 c. TO.) 



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. 



PROFESSOR F. C. NEWCOMB, University of Michigan. 



SECRETARY : 



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. 



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



SECRETARY: 



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



CHAIRMAN: 

 SPEAKERS: 



SECRETARY: 



PROFESSOR OSKAR DRUDE, Kon. Technische Hoch- 



schule, Dresden. 



PROFESSOR BENJAMIN ROBINSON, Harvard University. 

 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. 



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



SECRETARY : 



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. 



