| Reference number | MC/4/319 |
| Level | Item |
| Title | Letter from Sylvester O'Sullivan, 9 Lower Ormond Quay, Dublin, to the [Earl of Rosse] President of the Royal Society |
| Date | 31 January 1850 |
| Description | Enclosing a copy of his construction and demonstration of the trisection of the angle. O'Sullivan explains the background of his work and details his methods.
[Enclosure not present in volume, see related record.] |
| Extent | 4p |
| Format | Manuscript |
| Access status | Open |
| Related records in the catalogue | MM/11/104 |