Chapter XIII: Section D: PHYSIOLOGICAL CHEMISTRY. (Hall 16, September 22, 3 p. m.)

CHAIRMAN: PROFESSOR WILDER O. ATWATER, Wesleyan University.
SPEAKERS: PROFESSOR O. COHNHEIM, University of Heidelberg.
PROFESSOR RUSSELL H. CHITTENDEN, Yale University.
SECRETARY: DR. C. L. ALSBERG, Harvard University.

DEPARTMENT 11--ASTRONOMY
(_Hall 8, September 20, 4.15 p. m._)

CHAIRMAN: PROFESSOR GEORGE C. COMSTOCK, Director of the Observatory,
Madison, Wisconsin.
SPEAKERS: PROFESSOR LEWIS BOSS, Director of Dudley Observatory.
PROFESSOR EDWARD C. PICKERING, Director of Harvard
Observatory.

SECTION A. ASTROMETRY. (_Hall 9, September 21, 10 a. m._)

CHAIRMAN: PROFESSOR ORMOND STONE, University of Virginia.
SPEAKERS: DR. OSKAR BACKLUND, Director of the Observatory, Pulkowa,
Russia.
PROFESSOR JOHN C. KAPTEYN, University of Groningen, Holland.
SECRETARY: PROFESSOR W. S. EICHELBERGER, U. S. Naval Observatory.

SECTION B. ASTROPHYSICS. (_Hall 9, September 21, 3 p. m._)

CHAIRMAN: PROFESSOR GEORGE E. HALE, Director of the Yerkes Observatory.
SPEAKERS: PROFESSOR HERBERT H. TURNER, F.R.S., University of Oxford.
PROFESSOR WILLIAM W. CAMPBELL, Director of The Lick
Observatory, Mt. Hamilton, California.
SECRETARY: MR. W. S. ADAMS, Yerkes Observatory.

DEPARTMENT 12--SCIENCES OF THE EARTH
(_Hall 3, September 20, 11.15 a. m._)

CHAIRMAN: DR. G. K. GILBERT, U. S. Geological Survey.
SPEAKERS: PROFESSOR THOMAS C. CHAMBERLIN, University of Chicago.
PROFESSOR WILLIAM M. DAVIS, Harvard University.

SECTION A. GEOPHYSICS. (_Hall 14, September 21, 10 a. m._)

CHAIRMAN: PROFESSOR CHRISTOPHER W. HALL, University of Minnesota.
SPEAKER: DR. GEORGE F. BECKER, Geologist, U. S. Geological Survey.
SECRETARY: PROFESSOR E. M. LEHNERTS, Minnesota State Normal School.

SECTION B. GEOLOGY. (_Hall 14, September 21, 3 p. m._)

CHAIRMAN: PROFESSOR T. C. CHAMBERLIN, University of Chicago.
SPEAKERS: PRESIDENT CHARLES R. VAN HISE, University of Wisconsin.
SECRETARY: PROFESSOR R. D. SALISBURY, University of Chicago.

SECTION C. PALAEONTOLOGY. (_Hall 11, September 22, 10 a. m._)

CHAIRMAN: PROFESSOR WILLIAM B. SCOTT, Princeton University.
SPEAKERS: DR. A. S. WOODWARD, F.R.S., British Museum Of Natural
History, London.
PROFESSOR HENRY F. OSBORN, Columbia University.
SECRETARY: DR. JOHN M. CLARKE, Albany, N. Y.