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Note on Calycanthus Floridus

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 38

February 12

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 39

On Citrine or Yellow Quartz

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 40-41

On the Mechanical Genesis of Tooth-Forms

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 45-80

Additions to Mr. Cooke's Paper on "The Valsei of the United States"

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 86-88

March 5, 1878

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 99

The Electric Constitution of the Solar System

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 102-118

The Bridging Convolutions in the Primates

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 159-162

On a New Species of Sponge

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 163-164

On Lepidurus Couesii, Pack

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 165

Descriptions of New Species of North American Bees

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 181-221

On a Singular Tartar on the Teeth of a Sheep

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 268-269

June 11

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 270

Description of a New Fossil from the Cretaceous Beds of Charleston, S. C

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 272

On Unio Subrostratus, Say

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 273-275

July 30

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 291

Foraminifera of the Coast of New Jersey

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 292

Sensitive Organs in Asclepias

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 293-296

October 29

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 341

Calluna Vulgaris

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 347

Notices of Gordius in the Cockroach and Leech

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 383-384

Mountain Soap of California

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 405-406

Aspidium aculeatum in Pennsylvania

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 406-407

December 24

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 407

Report of the President for the Year Ending November 30, 1878

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 410-419

Elections during 1878

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 30, pages 442-443

Notes on the natural history of Fort Macon, N.C., and vicinity. (No.4)

Published in Proc. Acad. Nat. Sci. Philad, in 1878, in volume 1878, pages 21-28

Notes on the North American Caridea in the Museum of the Peabody Academy of Science in Salem, Mass

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1878, in volume 1878, pages 89-98

A louse of the pelican

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1878, in volume 1878, pages 100-101

The basilica spider and her snare

Published in Proc. Acad. nat. Sci. Philad., in 1878, in volume 1878, pages 124-135

Note on the probable geographical distribution of a spider by the trade winds

Published in Proc. Acad. nat. Sci. Philad, in 1878, in volume 1878, pages 136-147

Pelagic Amphipoda

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1878, in volume 1878, pages 276-290