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On Petalodus
Vol 28, Page 9, Date 1876
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February 1
Vol 28, Page 10, Date 1876
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February 8
Vol 28, Page 12, Date 1876
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February 22
Vol 28, Page 15, Date 1876
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February 29
Vol 28, Page 19, Date 1876
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Description of a New Generic Type (Bassaricyon) of Procyonidæ from Costa Rica
Vol 28, Page 20, Date 1876
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Description of New Species of Fossils from Paleozoic Rocks of Iowa
Vol 28, Page 27, Date 1876
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On the Age and Origin of Certain Quartz Veins
Vol 28, Page 36, Date 1876
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On Natural Inarching
Vol 28, Page 38, Date 1876
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On the Tæniodonta, a New Group of Eocene Mammalia
Vol 28, Page 39, Date 1876
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March 28
Vol 28, Page 41, Date 1876
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April 4
Vol 28, Page 51, Date 1876
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April 11
Vol 28, Page 54, Date 1876
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The Genus Pomoxys, Rafinesque
Vol 28, Page 68, Date 1876
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May 9
Vol 28, Page 80, Date 1876
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Mineralogical Notes; Hydrotitanite, a New Mineral
Vol 28, Page 82, Date 1876
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On Samarskite
Vol 28, Page 112, Date 1876
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June 13
Vol 28, Page 113, Date 1876
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June 20
Vol 28, Page 114, Date 1876
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On Certain Trap Rocks from Brazil
Vol 28, Page 119, Date 1876
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On Certain Mexican Meteorites
Vol 28, Page 122, Date 1876
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On the Occurrence of Helix Terrestris, Chemnitz, in North America
Vol 28, Page 127, Date 1876
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Fourth Contribution to the History of the Existing Cetacea
Vol 28, Page 129, Date 1876
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July 18
Vol 28, Page 140, Date 1876
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Supernumerary Anterior Extremity in a Brahmin Bull
Vol 28, Page 143, Date 1876
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Description of a New Species of Ægiale and Notes on Some Other Species of North American Lepidoptera
Vol 28, Page 148, Date 1876
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Fasciated Branches
Vol 28, Page 154, Date 1876
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On the Diurnal Opening of Flowers
Vol 28, Page 158, Date 1876
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On Opuntia Rafinesquii and O. vulgaris
Vol 28, Page 161, Date 1876
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Supernumerary Anterior Extremity in a Domestic Cow
Vol 28, Page 163, Date 1876
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The Rocks Known as Mexican Onyx
Vol 28, Page 166, Date 1876
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Natural Hybrids
Vol 28, Page 171, Date 1876
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On Sphenes from Delaware County, Penna
Vol 28, Page 176, Date 1876
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On the Lingual Dentition, Jaw, and Genitalia of Carelia, Onchidella, and Other Pulmonata
Vol 28, Page 183, Date 1876
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Bituminous Sediment of the Schuylkill River
Vol 28, Page 193, Date 1876
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Fruit of Akebia quinata
Vol 28, Page 194, Date 1876
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Habits of Formica rufa
Vol 28, Page 199, Date 1876
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On webs of new species of spiders
Vol 1876, Page 200, Date 1876
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The Australians
Vol 28, Page 262, Date 1876
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Cretaceous Vertebrates of the Upper Missouri
Vol 28, Page 266, Date 1876
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Report on Insects Introduced by Means of the International Exhibition
Vol 28, Page 267, Date 1876
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On Itacolumite
Vol 28, Page 325, Date 1876
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Epsomite on Brick-Walls
Vol 28, Page 334, Date 1876
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Notes on fishes from the Isthmus of Panama, collected by Dr. J. F. Bransford, U.S. N
Vol 28, Page 335, Date 1877
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On Some Extinct Reptiles and Batrachia from the Judith River and Fox Hills Beds of Montana
Vol 28, Page 340, Date 1876
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Report of the President
Vol 28, Page 372, Date 1876
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Report of the Curators for 1876
Vol 28, Page 380, Date 1876
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Report of the Recorder of Conchological Section
Vol 28, Page 390, Date 1876
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Report of the Conservator of the Botanical Section
Vol 28, Page 394, Date 1876