Informing Burt that the Admiralty had been instructed to conduct a comparative trial of his sounding instrument and that of Edward Massey.

Five letters sent by Massey to Captain Thomas Hurd and Dr Thomas Young. The letters also make reference to Massey's sounding machine and patent log.

Includes a copy of a letter sent to Massey from Robert Pullman, Master of the HMS Ville de Paris, concerning his sounding machine.

Five letters sent by Massey to Captain Thomas Hurd and Dr Thomas Young. The letters also make reference to Massey's sounding machine and patent log.

Enclosing a memorial with copies of letters relating to his sounding machine. The memorial is at [RGO 14/31: 117-119] and the letters are at [RGO 14/31: 111-114].

Concerning his preparation of chronometers for trial on the forthcoming 'Northern voyage'. Massey explains that he had been preparing two chronometers for the voyage but that they would not be ready on time. He offers his first chronometer for trial, requesting however that should it fail the results not be made public, as it was still under development.

Enclosing a letter and advertisements to lay before the Board of Longitude.

Letter from Massey to the Board of longitude providing the results of the comparative trial made between his sounding machine and 'Gould and Burt's Buoy and Knipper'. Preceded by a related letter of enclosure to Thomas Hurd. For an advertisement for the public trial see [RGO 14/31: 145-149].

Rejecting his request for an advance of money from the Board of Longitude.