Scope and Contents From the Sub-file:

Ten letters from Grimaldi to Captain Thomas Hurd and the Board of Longitude, with two copy replies from the Admiralty Office and Hurd.

Scope and Contents

Acknowledging receipt of his letters and proposals but questioning their relevance to the longitude problem.

Scope and Contents

Acknowledging receipt of his letters and stating that his proposals had to be examined by the Board before any advance payment would be made.

Scope and Contents

Concerning Kirkpatrick's 'artificial horizon' instrument.

Scope and Contents Correspondence and related papers concerning the establishment of galvanic communications between the Greenwich and Paris observatories. The papers include extracts from Airy's report on galvanic communications to the Admiralty; the laying of telegraph wires in the grounds of Greenwich Park, illustrated with a plan; the laying of telegraph wires on the South Eastern Railway between London Bridge and Dover; a plan and description of the electric telegraph employed on the South Eastern...

Scope and Contents Correspondence concerning the London County Council generating station at Greenwich:Correspondence with the Admiralty concerning the disturbance to instruments caused by the generating station, 1905-1908.Correspondence with the Director of Works and London County Council Tramways concerning the 'London County Council Electric Supply Bill, 1906' and the 'London County Council Tramways Improvements Bill, 1906'.Correspondence with Professor Ewing, Lord Rosse and Sir B....

Scope and Contents From the Item:

Four letters and a proposal.

Scope and Contents

Copy of a letter from the Admiralty Office to Sir John Barrow [Second Secretary of the Admiralty] containing an extract from the proceedings of the Board of Longitude, requesting that the Admiralty arrange a comparative trial of the sounding instruments of Peter Burt and Edward Massey.

Scope and Contents

Letter to Captain Thomas Hurd from the Admiralty Office on behalf of [Charles Philip] Yorke, First Lord of the Admiralty, originally enclosing a letter and memorial from Massey to be laid before the Board.

Scope and Contents From the Item:

Three letters; one of which bears a note on the reverse that his proposal was rejected [RGO 14/38: 332v].

Scope and Contents

On finding the longitude by the moon's meridian altitude.

Scope and Contents

Letter to the Lord Commissioners of the Admiralty originally enclosing his observations on improvements to the log glass, log reel and log-ship, and observations on the compass. The enclosures are at [RGO 14/31: 201-203].

Scope and Contents From the Item:

Two letters from Haviland on an invention by his friend (unnamed); with a related letter from John Barrow.

Scope and Contents

The letter refers to the award of 100 guineas to Dr Franks for his work in determining the longitude of the island of Madeira.

Scope and Contents

Concerning the superintendence of chronometers given to the Hydrographer.

Scope and Contents From the Item:

Three letters from Hartley, with two related letters from John Barrow and [Henry Kater].

Scope and Contents From the Item:

Two letters.

Scope and Contents

Outlining his 'new and good method of finding the longitude'.

Scope and Contents From the Item:

Three letters concerning a new instrument for ascertaining longitude, of which he had made a model.

Scope and Contents

Informing Massey that his memorial and letter on his perpetual log and sounding machine had been presented to the Commissioners of Longitude.

Scope and Contents From the Item:

24 letters, with related papers and observations.

Scope and Contents

Enclosing an example of his method for ascertaining longitude.

Scope and Contents From the Item:

Four letters and a proposal.

Scope and Contents From the Item:

Four letters and a proposal.

Scope and Contents From the Item:

Four letters and a proposal.