@book{bhlitem31934, title = {Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge }, volume = {v. 53 (1914)}, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/31934}, note = {https://www.biodiversitylibrary.org/bibliography/7023}, publisher = {Philadelphia, American Philosophical Society, }, author = {American Philosophical Society.}, year = {1914}, pages = {388}, keywords = {Learned institutions and societies|Pennsylvania|Periodicals|Philadelphia|Science}, }