| Publication Type: | Journal Article |
| Year of Publication: | 1870 |
| Authors: | M. P Duncan |
| Journal: | Proceedings of the Royal Society of London |
| Volume: | 18 |
| Pagination: | 289–301 |
| URL: | http://www.jstor.org/stable/112757 |
| Publication Type: | Journal Article |
| Year of Publication: | 1870 |
| Authors: | M. P Duncan |
| Journal: | Proceedings of the Royal Society of London |
| Volume: | 18 |
| Pagination: | 289–301 |
| URL: | http://www.jstor.org/stable/112757 |