Copies of letters in support of Massey's sounding machine, 1811
Scope and Contents
True copies made by Massey of letters from mariners who had tested his sounding machine at sea and found it successful. Correspondents include John Sibrell, Lieutenant and Commander of HMS Piercer (8 Dec. 1808), Nathaniel Denham, Master of HMS Daphne (10 Oct. 1809), Thomas Stokes (31 May 1810), John Tapper (22 July 1810), and Alexander Lumsdale, Master of the Caledonia (7 Sep. 1810). These were originally enclosed with a letter from Massey to the Board of Longitude [RGO 14/31: 115-116].
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4 folio(s) (4 ff.) : Paper
Language of Materials
DateText: date is inferred.
Finding aid date