218 
Differential Equations that occur in Mathemat- 
ical Physics. By Professor A. Macfarlane, 
Lehigh Univ., South Bethlehem, Pa. 
7. Condition that the Line common to n-1 
planes in an n-space may lie on a given Quad- 
ric Surface in the same space. By Dr. Virgil 
Snyder, Ithaca, N. Y. 
8. The Psychology of the Personal Equation. 
By Professor T. H. Safford, Williamstown, 
Mass. 
9. Compound Determinants. (Preliminary 
Communication.) By Professor W. H. Metzler, 
Syracuse, N. Y. 
10. Waters within the Earth. 
Auchincloss, C.E., Philadelphia, Pa. 
11. On the Secular Motion of the Harth’s 
Magnetic Axis. By Dr. L. A. Bauer, Univ. of 
Cincinnati, Cincinnati, O. 
12. Simple Expressions for the Diurnal 
Range of the Magnetic Declination and of the 
Magnetic Inclination. By Dr. L. A. Bauer, 
Univ. of Cincinnati, Cincinnati, O. 
18. The Theory of Perturbations and Lie’s 
By W. 5S. 
Theory of Contact-transformations. By Dr. 
E. O. Lovett, Baltimore, Md. 
14. On Rational Right Triangles. No. I. 
By Dr. Artemas Martin, U. 8. Coast Survey, 
Washington, D. C. 
15. Some Results in Integration expressed by 
the Elliptic Integrals. By Professor James 
McMahon, Cornell Univ., Ithaca, N. Y. 
16. Modification of the Eulerian Cycle due to 
Inequality of the Equatorial Moments of Inertia 
of the Earth. By Professor R. 8. Woodward, 
Columbia Univ., New York. 
17. Integration of the Equations of Rotation 
of a Non-rigid Mass for the case of Equal Prin- 
cipal Moments of Inertia. By Professor R. 8. 
Woodward, Columbia Uniy., New York. 
18. General Theorems concerning a certain 
class of Functions deduced from the properties 
of the Newtonian Potential Function. By Dr. 
J. W. Glover, Ann Arbor, Mich. 
19. The Importance of Adopting Standard 
Systems of Notation and Coordinates in Mathe- 
matics and Physics. By Professor Frank H. 
Bigelow, U. 8. Weather Bureau, Washington, 
D. C. 
20. A Remarkable Complete Quadrilateral 
among the Pascal Lines of an Inscribed Six- 
SCIENCE. 
(N.S. Vou. VI. No. 136. 
point of a Conic. By Professor R. D. Bohan- 
nan, Columbus, Ohio. James McManon, 
Secretary of the Section. 
CORNELL UNIVERSITY. 
SECTION B.—PHYSICS. 
Address of the Vice-President: Long Range 
Temperature and Pressure Variables in Physics. 
By Dr. Carl Barus, Brown University, Provi- 
dence, R. I. 
1. Screening Effects of Induced Currents in 
Solid Magnetic Bodies in an Alternating Field. 
By Mr. Charles P. Steinmetz, General Electric 
Company, Schenectady, N. Y. 
2. The Design, Construction and Test of a 
1250 Watts Transformer. By Professor Henry 
S. Carhart, Univ. of Mich., Ann Arbor, Mich. 
8. Electrolytic Action in a Condenser. By 
Dr. K. E. Guthe, Instructor in Physics, Univ. 
of Mich., Ann Arbor, Mich. 
4. On the Velocity of Light in a Magnetic 
Field. By Professor E. W. Morley, Cleveland, 
Ohio; Professor H. T. Eddy, Minneapolis, 
Minn., and Professor D. C. Miller, Cleveland, 
Ohio. 
5. The Magnetic Survey of Maryland. By 
Dr. L. A. Bauer, Univ. of Cincinnati, Cincin- 
nati, Ohio. 
6. The Transmission of Radiant Heat by 
Gases at Varying Pressures. By Mr. Charles F. 
Brush, Cleveland, Ohio. 
7. On the Rate at which Hot Glass absorbs 
Superheated Water. By Professor Carl Barus, 
Brown Univ., Providence, R. I. 
8. A New Method of determining the Specific 
Heats of Liquids. By Robert L. Litch, A.M., 
Bethlehem, Pa. 
9. On the Coefficient of Expansion of Certain 
Gases. By Professor Edward W. Morley, 
Cleveland, Ohio, and Professor Dayton C. 
Miller, Cleveland, Ohio. 
10. The Effect of Heat on the Elastic Limit 
and Ultimate Strength of Copper Wire. By 
Professor Frank P. Whitman, Adelbert College, 
Cleveland, Ohio, and Mary C. Noyes, Ph.D., 
Lake Erie Seminary, Painesville, Ohio. 
11. A Method of obtaining Capillary Canals 
of Specified Diameter. By Professor Carl 
Barus, Brown Uniy., Providence, R. I. 
12. Kites and their Use by the Weather 
