Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1869, in volume 21, pages 1-21

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

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1869, in volume 21, pages 93-118

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1869, in volume 21, pages 121-122

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1869, in volume 21, pages 180

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1869, in volume 21, pages 189-190

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1869, in volume 21, pages 218-234

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1869, in volume 21, pages 237-238

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

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1869, in volume 21, pages 245-249

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

Published in Proc. Acad. nat. Sci. Philadelphia, in 1869, in volume 1868, pages 316-323

Created: 2010-03-21, modified: 2021-04-05