| RefNo | AP/42/2/5 |
| Level | Item |
| Title | Unpublished figure, hearing-tube by Somerville Scott Alison |
| Creator | Alison; Somerville Scott (1813-1877); Scottish physician |
| Date | 1859 |
| Description | An illustration showing one of the hearing-tubes used by Alison in his experiments on sound.
Subject: Scientific apparatus and instruments |
| Extent | 1p |
| Format | Drawing |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |