| RefNo | AP/34/10/10 |
| Level | Item |
| Title | Unpublished figures, 'Diagram of striped alpha and beta prisms' by William Bird Herapath |
| Creator | Herapath; William Bird (1820-1868); English surgeon; chemist |
| Date | 19 January 1854 |
| Description | Four figures in coloured ink, labelled figures 15-18, showing the effects of ordinary light and vertically polarised light on a series of prisms.
Subject: Chemistry / Optics |
| Extent | 1p |
| Format | Drawing |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |