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 on telegraphic communications, including the failure of signals and breakdown of equipment; the agreement for use of the telegraph between the Admiralty and South Eastern Railway; renewal of telegraph wires in Greenwich Park; three samples of proposed cables, one being a specimen of Caoutchouc cable, with patent; notes on the arrangement of overhead wires; adjustments to the Greenwich sympathetic clock; R.L. Jones' system of clock regulation by electricity; a theory...