| Publication Type: | Journal Article |
| Year of Publication: | 1882 |
| Authors: | A. Gray |
| Journal: | Proceedings of the American Academy of Arts and Sciences |
| Volume: | 17 |
| Pagination: | 163-230 |
| Publication Type: | Journal Article |
| Year of Publication: | 1882 |
| Authors: | A. Gray |
| Journal: | Proceedings of the American Academy of Arts and Sciences |
| Volume: | 17 |
| Pagination: | 163-230 |