| Reference number | MS/525/6/6/2/12 |
| Level | Item |
| Title | Letter from Dugald Clerk to Professor Joseph Ernest Petavel, Physical Laboratory, The University, Manchester |
| Date | 23 February 1915 |
| Description | Giving thanks for Petavel's ingenious proposal [Artful Dodger mine] which Clerk thinks should be successful, with modifications. Clerk suggests using hydrogen or coal gas to regulate buoyancy. The key is to obtain an effective clock. Sir Henry Jackson is communicating with Trinity House on the subject. Petavel should make a full sized tube of the type required by the mine and use it in pool experiments. |
| Extent | 2p |
| Format | Carbon copy |
| Access status | Open |
Fellows associated with this archive
| Code | Name | Dates |
| NA7825 | Clerk; Sir; Dugald (1854 - 1932); mechanical engineer | 1854 - 1932 |