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1
OF
THE AMERICAN ASSOCIATION
FOR THE
ADVANCEMENT OF SCIENCE,
THIRTY-THIRD MEETING,
HELD AT
PHILADELPHIA, PENN.
SEPTEMBER, 1884.
SALEM:
PUBLISHED BY THE PERMANENT SECRETARY.
1885.
EDITED BY
FREDERICK W. PUTNAM, Permanent Secretary.
PRINTED AT
THE SALEM PRESS,
SALEM, MASS.
Meetings and Officers of the Association of American Geologists and Natu.
ralists
xviii
ADDRESS OF THE RETIRING PRESIDENT, C. A. YOUNG
Second report of the Committee on standards of stellar magnitudes
Report of the Committee on indexing chemical literature
List of indexes to chemical literature
SECTION A. MATHEMATICS AND ASTRONOMY.
ADDRESS OF VICE PRESIDENT HENRY T. EDDY
Phenomena observed upon the solar surface from 1881 to 1884. By S. J. PERRY
Description of a model of a ruled cubic surface known as the cylindroid. By
ROBERT S. BALL
On a geometrical interpretation of the linear bilateral quaternion equation.
By IRVING STRINGHAM
Description of the Leander McCormick Observatory of the University of Vir-
ginia. By ORMOND STONE
On the fundamental formula of statistical mechanics, with applications to as-
tronomy and thermodynamics. By J. WILLArd Gibbs
Linear functions of points, lines and planes. By E. W. HYDE
Colors of the stars. By E. C. PICKERING
On the colors of variable stars. By S. C. CHANDLER, jr.
On the original graduation of the Harvard College meridian circle in situ.
By W. A. ROGERS and GEO. B. CLARK
The average asteroid orbit and the asteroid ring. By M. W. HARRINGTON.
Micrometric observations of Jupiter's third satellite. By DAVID P. TODD
On the course of the corrections to the heliocentric longitudes of Newcomb's
tables of Uranus and Neptune. By DAVID P. TODD
.
On the general values of the obliquity of the ecliptic, and of the precession and
inclination of the equator to the invariable plane, taking into account
terms of the second order. By J. C. ADAMS
Note on Newton's theory of atmospheric refraction, and on his method of
finding the motion of the moon's apogee. By J. C. ADAMS
72
The nebulæ. By LEWIS SWIFT
A new apparatus for the study of Boyle's law. By LEROY C. COOLEY. (Title)
The lunar aurora. By JOHN HAYWOOD. (Title)
A. A. A. S., VOL. XXXIII.
A
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