| Description | 1. Mathematical calculations regarding angles and triangles.
2. 11 Sep 1868 Extract from a letter to "my father", partly in French, from Mr Mentreath listing a dictionary of abbreviations, manuscripts from the 11th-17th centuries, and 23 copper plates describing the old law including the ancient names of places in Great Britain and Ireland, an alphabetical table of ancient surnames, and a glossary of Latin words by Andrew Wright.
3. Brochure for Boyd's patent flue plates. |