CONTENTS. 
Page. 
Constitution. vn 
Standing Rules of the Society. vm 
Standing Rules of the General Committee... xn 
Standing Rules of the Mathematical Section..xiv 
Rules for the Publication of the Bulletin. xv 
List of Presidents of the Society... xvi 
List of Officers of the Society for 1892.. xvn 
List of Members. xviii 
Philosophy and Specialties, Annual Presidential Address, 1888, 
Garrick Mallery. 3 
On the Observation of Sudden Phenomena, S. P. Langley. 41 
On Some of the Greater Problems of Physical Geology, C. E. Dutton.. 51 
On the Crystallization of Igneous Rocks, J. P. Iddings. 65 
On the Reduction of Pendulum Observations, E. D. Preston. 115 
The Relative Abundance of the Chemical Elements, F. W. Clarke... 131 
Assumption and Fact in the Theories of Solar and Stellar Proper Mo¬ 
tions, Annual Presidential Address, 1889, J. R. Eastman.... 143 
Plurricanes in the Bay of North America, Everett Hayden. 173 
The Mineral Composition and Geological Occurrence of Certain Igne¬ 
ous Rocks in the Yellowstone National Park, J. P. Iddings. 191 
The Evolution of Serials Published by Scientific Societies, W J 
McGee. 221 
On Certain Peculiar Structural Features in the Foot-Hill Region of 
the Rocky Mountains near Denver, Colorado, G. H. Eldridge.247 
The Progress of Meteoric Astronomy in America, J. R. Eastman. 275 
Money Fallacies, Annual Presidential Address, 1890, C. E. Dutton.... 359 
Constitution and Origin of Spherulites in Acid Eruptive Rocks, 
Whitman Cross. . 411 
Spherulitic Crystallization, J. P. Iddings. 445 
Obituary Notices.’. 465 
Mohawk Lake Beds, H. W. Turner. 385 
Minutes of Proceedings of the Society, 1888. 499 
Minutes of Proceedings of the Society, 1889.. 528 
Minutes of Proceedings of the Society, 1890. 549 
Minutes of Proceedings of the Society, 1891. 563 
Minutes of Proceedings of the Mathematical Section, 1888. 579 
Minutes of Proceedings of the Mathematical Section, 1889. 604 
Minutes of Proceedings of the Mathematical Section, 1890. 606 
Minutes of Proceedings of the Mathematical Section, 1891. 608 
Index. 611 
* (in)' 
