Scope and Contents Correspondence and related papers on the time signals at Portsmouth, Devonport and Sheerness and the tests, errors and running of time balls at Gravesend, Newcastle, Liverpool, Glasgow, Mauritius and the Cape of Good Hope. The papers include a newspaper cutting from 'The Gateshead Observer' on the importance of time balls; accounts and reports on the Post Office clocks; papers on the regulation of the London Bridge and Westminster Great Clock; and papers on the regulation of the Edinburgh...

Scope and Contents Miscellaneous correspondence concerning new inventions and engineering works, including proposals for a bridge at Limehouse, London, in conjunction with the Metropolitan District Railway, depicted on a map, with comments by Airy; calculations relating to curves in railway tracks; Airy's theory of the link motion for the sliding value of steam engines'; various inventions for propellers, steering apparatus and paddles, with Airy's views; T. Walker's plan for recycling sewage, including a plan...