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Material created by Ronalds' during his time abroad, and as Honorary Director of the British Association's Observatory at Kew, with various notes on electricity, 1818-1871. It comprises material relating to Ronalds' travels abroad including journals, notebooks, sketchbooks, bills of expenses, and correspondence relating to two journeys to Italy, Egypt, the Holy Land and the Greek Islands; Material relating to 'Sketches at Carnac' and atmospheric electricity including pencil sketches and notes on atmospheric electricity taken from published sources; Correspondence while Honorary Director at the British Association's Observatory at Kew, including letters to Ronalds from various correspondents, mainly dealing with aspects of meteorology and magnetism, and the affairs of the Observatory at Kew, with technical discussion of self-registration by photography, bifilar magnets, atmospheric electricity; Notes, reports and copy correspondence relating to Ronalds' time at the Kew Observatory including a foolscap notebook with several loose insertions relating to a system devised by Ronalds for propelling or towing vessels in water by means of a stationary fulcrum; Papers relating to telescopes, fires, meteorology and Report on Kew for 1849-1850, including notes and diagrams relating to the design of a stand for a telescope, material relating to the design of a self-acting fire alarm, barometric and temperature readings, material relating to expenses and experiments at Kew for report on the observatory 1849-1850 presented to the British Association at their meeting in 1850, papers relating to a proposed 'Turner's Manual' which Ronalds began writing 1838-1839; Papers relating to perspective, the electric telegraph, galvanism and electromagnetism, electric columns, atmospheric electricity, aquatic propulsion and drawing and surveying; Notes and sketches on items relating to various subjects, including a small catalogue of books on meteorology, electricity etc, and a bundle of unused photographic paper and some tracings from Ronalds' self registering instruments; Printed material relating to Ronalds' perspective tracing instruments; Extracts from diaries and newspaper cuttings; Portrait album of well-known European scientists.

Manuscript volumes, correspondence and papers by Michael Faraday including material based on original Faraday documents 1809-1961, comprising six volumes in total covering subjects on botany; chemistry; colour; fire eating; galvanism; gas lighting; light; magnetism; meteorology; lightning; preserving drawings; removing glass stoppers; scientific apparatus; details of his visits with Davy to France and Italy 1813- 1814; visits to copper works and state mines in Wales 1819; visit to the Isle of Wight 1824; manuscript notes on lectures given by Faraday to the City Philosophical Society 1816-1819; general observations; experiments; notes including scientific subjects as well as anagrams; etymology; recipes for gin and ginger beer; humour; love; memory; oratory; philosophy; Rochefoucault; Shakespeare; 'Chemical Love Letter.' 1816-1846; chemical notes [1822]; notes on experiments on electric lamps powered by batteries 1854 and a letter to John Tyndall; c 750 manuscript correspondence between Faraday and scientists, politicians and the general public 1812-1867; letters and draft letters by Faraday written from the Royal Institution 1853-1863; committe minutes from a subcommitte set up to conduct experiments in optical glass 1828-1835; papers relating to the wear and production of coinage at the Royal Mint 1835; papers relating to table-turning 1853-1864; Faraday's French passport 1856; notes on Faraday including his illness and his refusal of the post of President at the Royal Institution 1864-1872.