Scope and Contents

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.

Scope and Contents Correspondence and papers concerning proposed improvements in clocks and chronometers. The correspondents include F. Baily, F. Beaufort, G. Fisher, A. de Morgan, R. Sheepshanks and W. Tite. The volume includes a paper, originally from 'The Nautical Magazine', titled 'Magnetic Experiments on Chronometers'; a paper, originally from 'The Nautical Magazine', titled 'Glass Balance-Springs to Chronometers'; extracts from 'The County Herald' of October and November 1837 on improvements in...

Scope and Contents

Correspondence with clockmakers and other papers concerning new clocks and improvements. There are papers on the Royal Exchange and Hamburg clocks; the rating of the Royal Exchange Clock for 1848; ratings of various chronometers; elasticity of balance springs; improved and new escapements; E.J. Dent's magneto-electric dial; and improved pendulums by J.G. Ulrich and E.T. Loseby. The correspondents include H.C. Schumacher, Lord Wrottesley, F. Beaufort and R. Sheepshanks.

Scope and Contents Correspondence and papers on telegraphic communications, including the conditions of use of telegraph wires between the Admiralty and the South Eastern Railway; proposed arrangements of galvanic wires and circuits for working the sympathetic clocks; the circuit and plan of the galvanic wires in the Lombard Street Post Office; various improvements and efficiencies in the telegraph; a report on the working of galvanic apparatus at the Royal Observatory; sketches of the automatic switch for the...