Scope and Contents Correspondence on the communication of time by telegraph to Exeter, Norwich, the Bank of England, Portsmouth, Plymouth and Southampton. The papers include complaints about alleged inaccuracies of the Liverpool Time Ball; a request for a clock for the Greenwich Hospital School Observatory; galvanic regulations of the clocks at the General Post Office and the Athenaeum; and the construction of sympathetic galvanic clocks. The correspondents include C.V. Walker, J.C. Clark, S.H. Northcote, G....

Scope and Contents Correspondence and related papers on the communication of time by the Post Office telegraph. There are papers on the trials, costs and tests of clocks on the network; the regulation of clocks; proposals for time signals to be sent to naval dockyards from Greenwich; time balls at Portsmouth, Devonport, Sheerness, Glasgow, Hamburg, Liverpool and the City Observatory, London; and a report by Airy on the workings of the Devonport Time Ball and sketches of its galvanic arrangement. The...

Scope and Contents Correspondence and papers regarding the determination of the longitude of Brussels by observing set stars and taking the difference between the local time and Greenwich Time received by telegraphic signal. The material includes Airy's paper 'Difference of longitude between the Observatories of Brussels and Greenwich as determined by galvanic signals'; a similar piece for 'The Athenaeum'; instructions to those involved and to the Submarine and European Telegraph Company; comparisons of the...