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Black ring-bound notebook, c.1920-1921. The item contains notes and narratives of experiments on atmospherics and on Aperiodic Impulses. The work begins July 12 [1920] and continues to April 17 [1921].

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Calculations of Barometrical Observations in La Palma, Canary Islands giving heights in feet of various volcanic features including of the Central Ridge of the Caldera, 12 July 1854.

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Map of Europe showing the annual pressure and rainfall across the continent in the early/mid 20th century.

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Summary is noted by Lyell as 'Barometrial measurement of Heights'. Letter to Dr [Joseph Dalton] Hooker from Charles James Bunbury full of social chat, he mentions that "Mr Bunbury" [Henry Edward Bunbury, his father] gave a lecture to the Bury Atheneum on his recent trip to Madeira and Tenerife. He includes notes entitled " The Neutral Point of Sir C Lyell's Barometer", 11 November 1854.

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Letter to Mary [Lyell] from [Charles James Bunbury] giving barometrical observations in feet which were taken on the Island of Gran Canaria. Bunbury states that he has passed these measurements to Dr Hooker in order that he might verify them, 1850s.

Scope and Contents This series contains the information gathered by Sir Charles Lyell on a visit to Madeira and the Canary Islands in the winter of 1853 and spring of 1854. He studied the volcanic and geological features of the island including fossils and shells. There is a detailed 'Index to the Notebooks on Geology of Madeira' in the series of Index notebooks, reference Coll-203/A5/16, which indexes the relevant Scientific Notebooks 185 - 197, as well as these manuscripts. There are additionally two...