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Stated Meeting, January 1
Published in Proceedings of The American Philosophical Society, in 1858, in volume 6, issue 59, pages 281-282
Stated Meeting, January 15
Published in Proceedings of The American Philosophical Society, in 1858, in volume 6, issue 59, pages 283-284
Stated Meeting, February 5
Published in Proceedings of The American Philosophical Society, in 1858, in volume 6, issue 59, pages 284-287
Stated Meeting, February 19
Published in Proceedings of The American Philosophical Society, in 1858, in volume 6, issue 59, pages 287-288
Stated Meeting, March 5
Published in Proceedings of The American Philosophical Society, in 1858, in volume 6, issue 59, pages 290-298
Stated Meeting, March 19
Published in Proceedings of The American Philosophical Society, in 1858, in volume 6, issue 59, pages 298-302
Stated Meeting, April 2
Published in Proceedings of The American Philosophical Society, in 1858, in volume 6, issue 59, pages 302-304
Stated Meeting, May 7
Published in Proceedings of The American Philosophical Society, in 1858, in volume 6, issue 59, pages 308-316
Stated Meeting, May 21
Published in Proceedings of The American Philosophical Society, in 1858, in volume 6, issue 59, pages 316-317
Stated Meeting, June 18
Published in Proceedings of The American Philosophical Society, in 1858, in volume 6, issue 59, pages 317-320