SECTION B.

PHYSICS.

OFFICERS OF SECTION B.

Vice-President and Chairman of the Section.
D. C. MILLER, Cleveland.

Secretary.

A. D. COLE, Poughkeepsie.

Member of Council.

E. F. NICHOLS.

Sectional Committee.

W. C. SABINE, Vice-President, 1907; D. C. MILLER, Vice-President, 1908; A. D. COLE, Secretary.

GORDON F. HULL, I year; F. E. NIPHER, 2 years; E. L. NICHOLS, 3 years; A. TROWBRIDGE, 4 years; F. B. ROSA, 5 years.

Member of General Committee.

H. S. CARHART.

ADDRESSES AND PAPERS PRESENTED.

Melody and the Origin of the Musical Scale.

Address by Prof. WALLACE C. SABINE, Harvard University, Vice-
President and Chairman of Section B for 1907.

Science May 29, 1908, N. S., Vol. xxvII, No. 700, pp. 841–847.

The Discharge of Electricity from Pointed Conductors.

JOHN ZELENY, University of Minnesota.

Notes on Spark Potentials.

R. F. EARHART, Ohio State University.

The Physical Review.

The Influence of Humidity upon the Electrical Discharge from Points in

Air.

JOHN ZELENY, University of Minnesota.

The Physical Review.

Radioactivity of a Smoke-laden Atmosphere.
S. J. ALLEN, University of Cincinnati.

The Physical Review.

On the Value of the Charges Carried by the Negative Ion of Ionized Gases. R. A. MILLIKAN and L. BEGEMAN, The University of Chicago. Physical Review, Vol. xxvI, p. 192.

The Distribution of Ionizing Energy about an X-ray Tube in Action.

The Velocity of the Negative Ions Produced by the Ultra-violet Rays.
ALOIS F. KOVARIK, University of Minnesota.

Absorption Spectra of Roentgen Rays, Measured by a Radiometer.
J. M. ADAMS, Harvard University.

Physical Review, Feb., 1908.

A Mechanical Effect accompanying Magnetization.
O. W. RICHARDSON, Princeton University.

Ionization of Gases at High Pressures.

HENRY A. ERIKSON, University of Minnesota.

Abstract in Physical Review, Feb., 1908.

The Variation of Apparent Capacity of a Condenser with the Time of Discharge and the Variation of the Capacity with Frequency in Alternating Current Measurements.

BRUCE V. HILL, University of Kansas.

Physical Review.

An Examination of Certain Alternating-Current Circuits, including those Containing Distributed Capacity.

CARL KINSLEY, The University of Chicago.

The Capacity of Paper Condensers and Telephone Cables.

ANTHONY ZELENY and A. P. ANDREWS, University of Minnesota.
The Physical Review.

A Hydrogen Peroxide Cell.

H. T. BARNES and G. W. SHEARER, McGill University, Montreal.

The Heat of Dilution of Aqueous Salt Solutions.
F. L. BISHOP.

Determination of the Fusion Points of Sodium Nitrate and Potassium Nitrate.

FLOYD R. WATSON, University of Illinois.

Physical Review, Vol. xxvi, p. 198, February, 1908.

A New Apparatus for Measuring Electrolytic Resistance.
ARTHUR W. SMITH, University of Michigan.

Abstract in Science, N. S. Vol. xxvII, No. 693, April 10, 1908.

Heat of Evaporation of Water.

A. W. SMITH, University of Michigan.

Monthly Weather Review, October, 1907.

A Galvanometer Scale or the Direct Reading of Temperatures with Thermo-electric Couples.

ANTHONY ZELENY, University of Minnesota.

Physical Review.

The Use of the Bunsen Ice Calorimeter for Accurate Heat Measurements. H. T. BARNES and F. H. DAY, McGill University, Montreal.

Physical Review.

The Resistance Temperature Coefficient and the Coefficient of Expansion of Carbon.

G. W. STEWART, University of North Dakota.

Abstract in Physical Review.

The Temperature Coefficient of the Moving Coil Galvanometer.
A. ZELENY and O. HOVDA, University of Minnesota.