The SciencesNovember 22, 1879
Summer Walks After Unseen Things
(Proceedings of the Academy of Natural Sciences, Philadelphia.—Biological and Microscopical Sections, October 20th, 1879)
Summer Walks After Unseen Things
(Proceedings of the Academy of Natural Sciences, Philadelphia.—Biological and Microscopical Sections, October 20th, 1879)
Meeting of Philadelphia Academy of Natural Sciences—Biological and Microscopical Section—OCT. 4, 1879