Miscellaneous Manuscripts Volume 10 Nos 1 to 16 Oddments Nos 17 to 21 Letters about the Cavendish Papers Nos 22 to 30 Biographical notes Nos 31 to 34 Oddments Nos 35 to 83 Letters from AT Kuppfer to Sir Edward Sabine and others Letters relate to the so-called 'magnetic crusade' - in which Sabine amassed huge quantities of data from observations made around the world to investigate the earth's magnetism. See John Cawood, 'The magnetic crusade: science and politics in early Victorian Britain', 'Isis', 70, pp493-518, (1979) Nos 84 to 89 Oddments Nos 90 to 102 Letters from Edward Frankland to HE Armstrong Nos 104 to 151 Letters and Papers about the Transit of Venus 1761 The Royal Society funded two voyages to observe the Transit of Venus: Charles Mason and Jeremiah Dixon on HMS 'Seahorse' planned to travel to the East Indies; Nevil Maskelyne and Robert Waddington on the East India Company's 'Prince Henry' to St Helena. Nos 152 to 173 Oddments Nos 174 to 188 Former sealed packets deposited with the Society at various times 1721-1936