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On Petalodus
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 9
February 1
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 10
February 8
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 12-14
February 22
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 15
February 29
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 19
On Natural Inarching
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 38
March 28
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 41
April 4
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 51-54
April 11
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 54
May 9
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 80-84
On Samarskite
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 112
June 13
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 113
June 20
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 114
July 18
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 140-143
Fasciated Branches
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 154-155
Natural Hybrids
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 171-172
Fruit of Akebia quinata
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 194
Habits of Formica rufa
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 199-200
The Australians
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 262-263
On Itacolumite
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 325-326
Epsomite on Brick-Walls
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 334
Report of the President
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1876, in volume 28, pages 372-376