Page 
Page 
Constitution. vii 
Standing Rules of the Society . viii 
Standing Rules of the General Committee. xii 
Rules respecting Publications xiv 
Additional activities for the Society. xv 
Presidents of the Society.. xvii 
Officers of the Society for 1900 ... .xviii 
List of Members: 
Active list. . . . ... .. xix 
Absent list. xxiv 
Central American Rainfall, M. W. Harrington. 1 
Results of a Transcontinental Series of Gravity Measurements, 
G. R. Putnam. . 31 
Notes on the Gravity Determinations Reported by Mr. Putnam, 
G. K. Gilbert. 61 
New Cloud Classifications, A. McAdie . 77 
Steel Cylinders for Gun Construction—Stresses Due to Interior Cool¬ 
ing, Rogers Birnie. 87 
The Latitude-Variation Tide, A. S. Christie. 103 
Alaska, as it was and is, 1865-1895, Annual Presidential Address, 
1895, W. H. Dali. 123 
Graphic Reduction of Star Places, E. D. Preston. 163 
Chemistry in the United States, Annual Presidential Address, 1896, 
F. W. Clarke. 183 
The Transcontinental Arc, E. D. Preston... 205 
A Century of Geography, Annual Presidential Address, 1897, 
M. Baker. 223 
On the Comparison of Line and End Standards, L. A. Fischer. 241 
Recent Progress in Geodesy, E. D. Preston. 251 
The Secular Change in the Direction of the Terrestrial Magnetic 
Field at the Earth’s Surface, G. W. Littlehales. . 269 
The Function of Criticism in the Advancement of Science, Annual 
Presidential Address, 1898, F. H. Bigelow. 337 
Obituary Notices: 
Thomas Antisell, 1817-1893. 367 
Stephen Vincent Benet, 1827-1895. 370 
Thomas Lincoln Casey, 1831-1896. 374 
Daniel Currier Chapman, 1826-1895.. 381 
George Edward Curtis, 1861-1895. 384 
Robert Edward Earll, 1853-1896. .... 388 
William Whitney Godding, 1831-1899. 390 
(iii) 
