Regulations regarding the loan and rating of chronometers. The volume includes a report of a committee of the Board of Longitude on this subject; regulations on accounts; publication of different chronometer ratings; and details of E.J. Dent's patent for improvements in chronometers and other timekeepers, with plans and drawings. The correspondents are J. Barrow, F. Beaufort, C. Wood, R. Sheepshanks, F. Molyneux and C. Frodsham.

Correspondence and papers concerning valuations, exchanges and sales of chronometers by the Admiralty and the Royal Observatory. There are tables of the ratings of individual chronometers. The correspondents include F. Beaufort and J. Barrow.

Correspondence between the Admiralty and chronometer makers regarding the latter's claims for rewards for making improvements to chronometers. Most of the papers concern the claims made by E.T. Loseby, but there is the repeat of a claim by J.G. Ulrich, in the form of a memorial. The papers also include several pages of calculations and three newspaper cuttings relating to Loseby's claims.

Correspondence on errors and rates of chronometers, including the foundation of time balls at Demerara and C.P. Smyth's account of the Time Ball at the Royal Observatory, Edinburgh. There are also enquiries on various chronometers, including those used on the 'Bounty'. The correspondents include F. Beaufort, C.P. Smyth and E. Sabine.

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty.

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty.

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty.

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty.

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty. There is also a printed paper on sending defective chronometers from abroad to the Royal Observatory.

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty. There are also papers on the printing of the chronometer rates and a printed circular from 'The Horological Journal' to its readers containing a letter on 'rating chronometers on trial at Greenwich'.

Correspondence with, mainly, chronometer makers and the Admiralty concerning the testing of chronometers at the Royal Observatory and the purchase of chronometers by the Admiralty. There are also printed copies of the rates of chronometers on trial at the Royal Observatory in 1864, 1865, 1866, 1867 and 1868.

Correspondence on the rates of, repairs to, damage to, ownership of, conversions to, and carriage of various chronometers. The volume covers the Burdett-Coutts prize essay for a compensation balance; problems with the Portsmouth sidereal clock; and proposals for a new electric turret clock at the University of London. The correspondents include F.J.O. Evans, H.C.G. Rümker, C.A.F. Peters, G.H. Richards, C. Wheatstone, C.V. Walker and W.B. Carpenter.

Correspondence on the ownership of, rates of, accounts of, listings of, repairs to, and packing of various chronometers. The volume includes papers on the defects and repairs to the Portsmouth sidereal clock; trials of new deck clocks; a report on the establishment and inspection of a new electric turret clock for London University; and enquiries on the Greenwich sidereal standard clock by J.W. Reffitt. The correspondents include F.J.O. Evans, R. Hall, W.B. Carpenter and W.H.M. Christie.

Correspondence concerning the clock for the New Palace at Westminster. The correspondents are mainly horologists, but there are also letters from the Department of Woods and Works. The volume includes a parliamentary paper titled 'A Return for a List of Papers relative to the Great Clock for the New Palace at Westminster', dated 24 June 1847, and pages from the 'Proceedings of the Institute of Civil Engineers' on Wheatstone's 'telegraph clock'.

Correspondence concerning the clock for the New Palace at Westminster. The correspondents are mainly horologists, but there are also letters from the Department of Woods and Works. The volume includes parliamentary papers on the supply of new clocks and on correspondence with the Woods, Forests and Land Revenues relating to the clock and bells; newspaper extracts on the clock and related subjects; plans and sections of the clock; and a plan of the Clock Tower.