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Stated Meeting, January 3d, 1873
Vol 13, Iss 81, Page 1, Date 1873
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The Iron Ores of the South Mountain. Along the Line of the Harrisburg and Potomac Railway, in Cumberland County, Pennsylvania
Vol 13, Iss 81, Page 3, Date 1873
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Stated Meeting, January 17th, 1873
Vol 13, Iss 81, Page 22, Date 1873
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A Contribution to the Ichthyology of Alaska
Vol 13, Iss 81, Page 24, Date 1873
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Stated Meeting, February 7th, 1873
Vol 13, Iss 81, Page 33, Date 1873
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On The New Perissodactyles from the Bridger Eocene
Vol 13, Iss 81, Page 35, Date 1873
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Stated Meeting, February 21st, 1873
Vol 13, Iss 81, Page 36, Date 1873
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On the Short Footed Ungulata of the Eocene of Wyoming
Vol 13, Iss 81, Page 38, Date 1873
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On the Arrangement of the Families of Coleoptera
Vol 13, Iss 81, Page 75, Date 1873
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Revision of the Species of Several Genera of Meloidæ of the United States
Vol 13, Iss 81, Page 88, Date 1873
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Revision of the Genera and Species of the Tribe Hydrobiini
Vol 13, Iss 81, Page 118, Date 1873
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The Non-Periodic Distribution of Heat in the Atmosphere
Vol 13, Iss 81, Page 138, Date 1873
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Oscillatory Forces in the Solar System
Vol 13, Iss 81, Page 140, Date 1873
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Estimation of Solar Mass and Distance, from the Equilibrium of Elastic and Gravitating Forces
Vol 13, Iss 81, Page 142, Date 1873
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Note on Planeto-Taxis
Vol 13, Iss 81, Page 143, Date 1873
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Rotation of the Sun and the Intra-Asteroidal Planets
Vol 13, Iss 81, Page 145, Date 1873
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Planetary Relations to the Sun-Spot Period
Vol 13, Iss 81, Page 147, Date 1873
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Relative Velocities of Light and Gravity
Vol 13, Iss 81, Page 148, Date 1873
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The Gamuts of Sound and Light
Vol 13, Iss 81, Page 149, Date 1873
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Stated Meeting, March 7th, 1873
Vol 13, Iss 81, Page 154, Date 1873
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St. Clairsville and Bedford Railroad; And Dunning's Creek Fossil Iron Ore
Vol 13, Iss 81, Page 156, Date 1873
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Stated Meeting, March 21st, 1873
Vol 13, Iss 81, Page 168, Date 1873
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Obituary Notice of Charles D. Meigs, M. D
Vol 13, Iss 81, Page 170, Date 1873
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D. S. Holman's Device for the Microscopic Examination of Fluids
Vol 13, Iss 81, Page 180, Date 1873
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Stated Meeting, April 4th, 1873
Vol 13, Iss 81, Page 181, Date 1873
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Obituary Notice of John F. Frazer
Vol 13, Iss 81, Page 183, Date 1873
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Topography as Affected by the Rotation of the Earth
Vol 13, Iss 81, Page 190, Date 1873
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The Music of the Spheres
Vol 13, Iss 81, Page 193, Date 1873
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On the Flat-Clawed Carnivora of the Eocene of Wyoming
Vol 13, Iss 81, Page 198, Date 1873
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Stated Meeting, April 18th, 1873
Vol 13, Iss 81, Page 209, Date 1873
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On the Osteology of the Extinct Tapiroid Hyrachyus
Vol 13, Iss 81, Page 212, Date 1873
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Description of Lesley's Micrometer for Field-Note Plotting
Vol 13, Iss 81, Page 233, Date 1873
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Stated Meeting, May 2d, 1873
Vol 13, Iss 81, Page 235, Date 1873
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Cosmical and Molecular Harmonies, No. II
Vol 13, Iss 81, Page 237, Date 1873
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Stated Meeting, May 16th, 1873
Vol 13, Iss 81, Page 253, Date 1873
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On the Gigantic Mammals of the American Eocene
Vol 13, Iss 81, Page 255, Date 1873
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Stated Meeting, June 20th, 1873
Vol 13, Iss 81, Page 257, Date 1873
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Stated Meeting, July 18th, 1873
Vol 13, Iss 81, Page 258, Date 1873
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Stated Meeting, September 19th, 1873
Vol 13, Iss 81, Page 260, Date 1873
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Stated Meeting, October 2d, 1873
Vol 13, Iss 81, Page 262, Date 1873
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Stated Meeting, October 17th, 1873
Vol 13, Iss 81, Page 263, Date 1873
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Stated Meeting, November 7th, 1873
Vol 13, Iss 81, Page 266, Date 1873
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Stated Meeting, November 21st, 1873
Vol 13, Iss 81, Page 267, Date 1873
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Stated Meeting, December 5th, 1873
Vol 13, Iss 81, Page 269, Date 1873
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The Outcrop Belt of the East Kentucky Coal Field
Vol 13, Iss 81, Page 270, Date 1873
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Synopsis of the Histeridae of the United States
Vol 13, Page 273, Date 1873
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Contributions from the Laboratory of the University of Pennsylvania. No. I. Corundum, Its Alterations and Associated Minerals
Vol 13, Iss 81, Page 361, Date 1873
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Contributions to a Knowledge of the Curculionidæ of the United States
Vol 13, Iss 81, Page 407, Date 1873
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Recent Confirmation of an Astronomical Prediction
Vol 13, Iss 81, Page 470, Date 1873
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Transcript of a Curious Manuscript Work in Cypher, Supposed to be Astrological
Vol 13, Iss 81, Page 477, Date 1873
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On the Language of the Natchez
Vol 13, Iss 81, Page 483, Date 1873
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An Acoustic Phenomenon in the Rocky Mountains
Vol 13, Iss 81, Page 499, Date 1873
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On the Meteors of January 2nd
Vol 13, Iss 81, Page 501, Date 1873
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A Study of the Structure and Erosion of Brush Mountain, in Blair County, Pennsylvania (With a Map)
Vol 13, Iss 81, Page 503, Date 1873
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Stated Meeting, December 19th, 1873
Vol 13, Iss 81, Page 505, Date 1873