Chapter XV: Section D: PLANT PATHOLOGY. (Hall 7, September 23, 10 a. m.)

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. m._)

CHAIRMAN:
SPEAKERS: PROFESSOR OSKAR DRUDE, Kön. Technische Hochschule, Dresden.
PROFESSOR BENJAMIN ROBINSON, Harvard University.
SECRETARY: PROFESSOR F. E. CLEMENTS, University of Nebraska.

SECTION F. BACTERIOLOGY. (_Hall 15, September 24, 10 a. m._)

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. m._)

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.

SECTION H. EMBRYOLOGY. (_Hall 9, September 23, 3 p. m._)

CHAIRMAN: PROFESSOR SIMON H. GAGE, Cornell University.
SPEAKERS: PROFESSOR OSKAR HERTWIG, University of Berlin.
PROFESSOR WILLIAM K. BROOKS, Johns Hopkins University.
SECRETARY: PROFESSOR T. G. LEE, University of Minnesota.