Elevation of a iron mill (top), elevation of the equipment for staining papers (bottom): both lettered for a key. Engraving by S. Porter, 1806, after J. Farey the younger.
- Farey, John, 1791-1851.
- Date:
- 1 November 1806
- Reference:
- 45413i
Licence: Public Domain Mark
Credit: Elevation of a iron mill (top), elevation of the equipment for staining papers (bottom): both lettered for a key. Engraving by S. Porter, 1806, after J. Farey the younger. Wellcome Collection. Source: Wellcome Collection.
