| RefNo | AP/34/10/19 |
| Level | Item |
| Title | Unpublished figures, 'Bi-sulphate of ammonia examined by polarised light' by William Bird Herapath |
| Creator | Herapath; William Bird (1820-1868); English surgeon; chemist |
| Date | 19 January 1854 |
| Description | Two figures in coloured ink, labelled figures 31-32, showing bi-sulphate of ammonia examined by polarised light with and without the 'red selenite stage'. The figures show two circles, each split into eight segments, with a diamond shape inside each segment.
Subject: Chemistry / Optics |
| Extent | 1p |
| Format | Drawing |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA7695 | Herapath; William Bird (1820 - 1868); surgeon | 1820 - 1868 |