Published in Proceedings of the Washington Academy of Sciences, in 1901, in volume 3, pages 111-138

Created: 2013-01-04, modified: 2013-01-04

Published in Proceedings Washington Academy Sciences, in 1901, in volume 3, pages 381-389

Created: 2011-06-02, modified: 2023-02-16

Published in Proceedings of the Washington Academy of Sciences, in 1901, in volume 3, pages 565-568

Created: 2010-11-20, modified: 2023-02-16