Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 1-6
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 7-11
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 12-13
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 14-17
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 18-26
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 27-46
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 47-51
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 52-57
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 58-65
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 66-69
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 216, pages 70-72
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 217, pages 73-95
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 217, pages 96-136
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 217, pages 137-142
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 217, pages 143-153
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 217, pages 154-164
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 217, pages 165-175
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 217, pages 176-184
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 218, pages 185-225
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 218, pages 226-245
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 218, pages 246-258
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 218, pages 259-269
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 218, pages 270-278
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 219, pages 279-289
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 219, pages 309-343
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 219, pages 344-350
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 220, pages 351-358
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 220, pages 359-370
Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 220, pages 371-456