| RefNo | AP/34/10/4 |
| Level | Item |
| Title | Unpublished figures, further crystals at right angles to each other by William Bird Herapath |
| Creator | Herapath; William Bird (1820-1868); English surgeon; chemist |
| Date | 19 January 1854 |
| Description | One page of nine figures in coloured ink, labelled figures 5-9 and figures 5b-8b, showing the interactions of various crystals when placed at right angles to each other.
Subject: Chemistry / Optics |
| Extent | 1p |
| Format | Drawing |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |