Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 208, pages 1-20

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 208, pages 21-30

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 208, pages 31-162

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 163-174

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 175-183

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 184-200

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 201-205

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 206-225

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 226-233

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 234-242

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 243-256

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 257-275

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 276-282

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 209, pages 283-286

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 210, pages 287-390

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 210, pages 397-406

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 210, pages 407-419

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 210, pages 420-430

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 211, pages 431-466

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 211, pages 467-487

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 211, pages 488-494

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 211, pages 495-515

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 211, pages 516-542

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 211, pages 543-557

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 212, pages 606-615

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Published in Proceedings of The American Philosophical Society, in 1913, in volume 52, issue 212, pages 616-650

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