Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 74-86

Created: 2013-03-02, modified: 2013-03-02

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 87

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Published in Proc. Acad. Nat. Sci. Philadelphia, in 1900, in volume 52, pages 151-159

Created: 2010-01-12, modified: 2011-10-03

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 160-338

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 339

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 381-384

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 385-394

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 449-459

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 460-463

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 464

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 482-490

Created: 2013-03-02, modified: 2013-03-02

Published in Proc. Acad. nat. Sci. Philad., in 1900, in volume 52, pages 529-543

Created: 2010-11-18, modified: 2011-06-21

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 544-549

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 556-560

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 561-567

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 582-611

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 613-622

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 684

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 755-759

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 763

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 772-773

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 779

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Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1900, in volume 1899, pages 473-474

Created: 2010-11-20, modified: 2011-06-21

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1900, in volume 1900, pages 426-430

Created: 2010-11-20, modified: 2011-06-21

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1900, in volume 1900, pages 431-433

Created: 2010-11-20, modified: 2011-06-21