Explorations ................................................................................................................................................................................................................................................................................................................................................................................................ | 11
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Publications ................................................................................................................................................................................................................................................................................................................................................................................................ | 12
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Library ................................................................................................................................................................................................................................................................................................................................................................................................ | 14
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Correspondence ................................................................................................................................................................................................................................................................................................................................................................................................ | 15
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International Congresses ................................................................................................................................................................................................................................................................................................................................................................................................ | 16
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Expositions ................................................................................................................................................................................................................................................................................................................................................................................................ | 17
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American Historical Association ................................................................................................................................................................................................................................................................................................................................................................................................ | 18
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Miscellaneous ................................................................................................................................................................................................................................................................................................................................................................................................ | 18
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National Museum ................................................................................................................................................................................................................................................................................................................................................................................................ | 19
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Bureau of American Ethnology ................................................................................................................................................................................................................................................................................................................................................................................................ | 22
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International Exchanges ................................................................................................................................................................................................................................................................................................................................................................................................ | 23
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National Zoological Park ................................................................................................................................................................................................................................................................................................................................................................................................ | 26
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Astrophysical Observatory ................................................................................................................................................................................................................................................................................................................................................................................................ | 28
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Necrology ................................................................................................................................................................................................................................................................................................................................................................................................ | 29
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Appendix I. Eeport on the National Museum 31
II. Report on the Bureau of American Ethnology 36
III. Eeport of the Curator of Exchanges 49
IV. Report of the Superintendent of the National Zoological Park 62
V. Report on the Astropbysical Observatory 69
VI. Report of the Librarian 75
VII. Report of the Editor 79
VIII. Report on the Tennessee Centennial Exposition 90
GENERAL APPENDIX.
Recent Progress accomplished by aid of Photography in the study of the
Lunar Surface, by MM. Loewy and Puiseux 105
The Function of Large Telescopes, by George E. Hale 123
The Le Sage Theory of Gravitation, by M. Le Sage, with Introduction by
S. P. Langley 139
The Extreme Infra-Red Radiations, by C. E. Guillaume 161
The Chemistry of the Stars, by Norman Lockyer 1 67
The Perception of Light and Color, by George Lechalas - 179
Some Curiosities of Vision, by Shelford Bidwell 197
Progress in Color Photography, by G. H. Niewenglowski 209
The Development of Electrical Science, by Thomas Gray 217
Telegraphy Across Space, by Silvanus P. Thompson 235
Signaling Through Space Without Wires, by W. H. Preece 249
Note on the Liquefaction of Hydrogen and Helium, by James Dewar 259
The Recently Discovered Gases and Their Relation to the Periodic Law, by
William Ramsay 267
The Kinetic Theory of Gases and Some of Its Consequences, by William Ram-
say 277
The Revival of Inorganic Chemistry, by H. N. Stokes 289
Scientific Ballooning, by John M. Bacon 307
The Tundras and Steppes of Prehistoric Europe, by James Geikie 321
Modification of the Great Lakes by Earth Movement, by G. K. Gilbert 349
The Plan of the Earth and Its Causes, by J. W. Gregory 363
Funafuti: The Story of a Coral Atoll, by W. J. Sollas 389
Oceanography, by J. Thoulet 407
Tha Relation of Plant Physiology to the Other Sciences, by Julius Wiesner.. 427
Pithecanthropus erectus — A Form from the Ancestral Stock of Mankind, by
Eugene Dubois 445
