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The Resources, Productions and Social Condition of Spain

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 301-343

Gravitating Waves

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 344-346

An Obituary Notice of Mr. Joseph Harrison, Jr

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 347-355

An Obituary Notice of Charles B. Trego

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 356-358

Analyses of Rocky Mountain Coal

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 358-361

Synopsis of the Vertebrata of the Miocene of Cumberland County, New Jersey

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 361-364

Origin of the Lower Silurian Limonites of York and Adams Counties

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 364-369

Notes on the Geology of West Virginia. No. II

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 370-401

On the Traps of the Mesozoic Sandstone in York and Adams Counties, Pennsylvania

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 402-414

On Cremation among the Digger Indians

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 414-415

Lunar-Monthly Rain-Fall in the United States

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 416-418

Stated Meeting, January 1, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 418-420

Stated Meeting, January 15, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 421-422

Stated Meeting, February 5, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 423-426

Stated Meeting, February 19, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 426-428

Stated Meeting, March 5, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 428-432

Stated Meeting, March 19, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 432-433

Note

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 433-434

Stated Meeting, April 2, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 434

Stated Meeting, April 16, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 435-437

Stated Meeting, May 7, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 437-439

Stated Meeting, May 21, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 439-440

Contributions from the Physical Laboratory of the University of Pennsylvania. No. I. A New Vertical-Lantern Galvanometer

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 440-445

The Geological Relations of the Lignitic Groups

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 447-475

On the Remains of Population Observed on and near the Eocene Plateau of North-Western New Mexico

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 475-482

On the Indian Tribes and Languages of Costa Rica

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 483-602

The Effect of Magnetic and Galvanic Forces upon the Strength of, and Destruction of Iron and Steel Structures

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 603-606

Further Relations of Magnetic, Gravitating, and Luminous Force

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 607-609

Planetary Illustrations of the Creative Fiat

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 609-612

Yearly Rainfall in the United States

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 613-614

Contributions from the Laboratory of the University of Pennsylvania. No. V. On a New Occurrence of Tartronic Acid, with Some Remarks on the Molecular Structure of Glyceric Acid

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 615-619

Notes on Glacial Action Visible along the Kittatinny or Blue Mountain, Carbon, Northampton, and Monroe Counties, Pennsylvania

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 620-621

The Beginnings of Development

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 622-631

Meteorological Observations Taken on the Nile between Cairo and the First Cataract, during January and February, 1873

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 632

On Glacial Deposits at West Philadelphia

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 633-634

Stated Meeting, July 16th, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 637-639

Stated Meeting, August 20th, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 639-640

Stated Meeting, September 17th, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 640-642

Stated Meeting, October 15th, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 643-645

The Letter of Mr. Robert Patterson Referred to Above

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 650

Further Dynamic Co-Ordinations

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 651-658

Stated Meeting, December 3d, 1875

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 659-662

Some Remarks on the Connection of Meteorology with Health

Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 667-673