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The New History
Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 179-190
Self-Luminous Night Haze
Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 246-253
The New Cosmogony
Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 261-265
An Optical Phenomenon
Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 316-320
The General Principles
Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 200, pages 321-332
The Desert Group Nolineæ
Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 200, pages 404-443