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Stated Meeting, Jan. 4, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 281-283

Railway under the English Channel. Address of the President, M. Michael Chevalier

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 283-290

Stated Meeting, Jan. 18, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 290-293

Results of Wave Interferences

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 294-307

Stated Meeting, Feb. 1, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 308-311

Stated Meeting, Feb. 15, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 311-312

Stated Meeting, March 1, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 313-314

On the Cordaites and Their Related Generic Divisions, in the Carboniferous Formation of the United States

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 315-335

The Columella and Stapes in Some North American Turtles

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 335-337

Notice of the Discovery of the Position of the Crural Processes in the Genus Atrypa

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 337-338

On the Aerolitic Epoch of November 12th-13th

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 339-341

Criteria of the Nebular Hypothesis

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 341-345

Section of Devonian Rocks Made in the Catskill Mountain at Palenville; Kauterskill Creek, New York

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 346-347

Section along Schoharie Creek in Schoharie County, N. Y., between Gilboa and Middleburg, from the Catskill down to the Upper Helderberg

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 347-349

Section of the Palœzoic Rocks in Blair County

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 349-352

The Coleoptera of Florida

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 353-372

Additional Descriptions of New Species

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 373-472

On the Calculation of Results in Gas-Analyses

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 473-475

Contributions from the Laboratory of the University of Pennsylvania. No. XIII. A Study of Some of the Derivatives of Mono- and Dichlor-Salicylic Acids

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 476-489

The Timucua Language

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 490-504

Descriptions of Extinct Batrachia and Reptilia from the Permian Formation of Texas

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 505-530

Some Microscopical Observations of the Phonograph Record

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 531-536

Some Tables for the Interconversion of Metric and English Units

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 536-539

Revision of the Species of the Sub-Family "Bostrichidæ" of the United States

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 540-555

Synopsis of the "Colydiidæ" of the United States

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 555-592

The Coleoptera of Michigan

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 593-669

Hyner's Station Oil Well Section, Included in a Detailed Section of the Rocks between the Lower Productive Coal Measures (XIII), and the Dark Slates of the Devonian (VIII) in the Vicinity of Renovo, Clinton Co., Pennsylvania

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 670-672

Synopsis of the Fishes of the Peruvian Amazon, Obtained by Professor Orton during His Expeditions of 1873 and 1877

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 673-701

Radiation and Rotation

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 701-704

Letter of Dr. Alexander Wilcocks on Shadows without Penumbra, Read February 1, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 705

Contributions from the Laboratory of the University of Pennsylvania. No. XIV. I. A New Monochlordinitrophenol and an Aniline Derivative of a-Monochlordinitrophenol. II. Beryllium Borate

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 706-708

Stated Meeting, March 15th, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 709-710

Stated Meeting, April 5th, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 711-713

Stated Meeting, April 19th, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 713-715

Stated Meeting, May 3d, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 715-720

Stated Meeting, May 17th, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 720-725

Stated Meeting, June 21st, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 17, issue 101, pages 726-728

Stated Meeting, August 16, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 1-2

Stated Meeting, September 20, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 2-3

Stated Meeting, October 4, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 3-8

Oil Well Records in McKean and Elk Counties, Pennsylvania

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 9-26

Nature's Reforesting

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 26-29

Contributions from the University of Pa., No. XV. Preliminary Notice on Chromometry, a New Branch of Quantitative Analysis with the Blowpipe

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 29-34

Crucial Harmonies

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 34-36

Stated Meeting, October 18, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 37-40

The Limiting Constant of Gravitation

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 41-43

Stated Meeting, November 1, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 43-45

Contributions from the Laboratory of the University of Pennsylvania, No. XVI.-On the Electrolytic Estimation of Cadmium

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 46

On the Scales of Maps

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 47-57

Circumstances Influencing the Efficiency of Dynamo-Electric Machines

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 58-61

Stated Meeting, Nov. 15, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 61-78

Descriptive List of Medals Struck to Commemorate the Battle of Waterloo

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 78-83

Stated Meeting, December 6, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 83-87

Stated Meeting, December 20, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 87-88

Movements of Troops in Cities in Cases of Riot or Insurrection

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 89-95

Contribution to the Lithology of Pennsylvania. On the Physical and Chemical Characteristics of a Trap Occurring at Williamson's Point

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 96-103

On the Total Solar Eclipse of July 29th, 1878

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 103-114

Notes on a Series of Analyses of the Dolomitic Limestone Rocks of Cumberland County, Pa., Made by Messrs. Hartshorne and Hartranft in the Laboratory of the Second Geological Survey of Pennsylvania

Published in Proceedings of The American Philosophical Society, in 1878, in volume 18, issue 102, pages 114-122