| Reference number | MM/14/77 |
| Level | Item |
| Title | 'Memorandum from the President and Council of the Royal Society to the Board of Trade on the subject of Iron Ships and their Compasses, by E Hopkins |
| Date | 18 May 1865 |
| Description | The memorandum discusses the issue of the deviation of compasses on board ships made from iron and on possible solutions to the problem ("the ships can be polarized and de-polarized at pleasure instantaneously"). |
| Extent | 2 sides |
| Format | Manuscript |
| Access status | Open |
Fellows associated with this archive
| Code | Name | Dates |
| NA6316 | Hopkins; William (1793 - 1866) | 1793 - 1866 |