Folder 1: /1 a memorandum on meteorology, dated 17 November 1837
/2 16 Jan. 1812, discusses his father's illness, his experiments with oxalic acids, and his meteorological studies (letter is damaged with some loss of text).
/3 3 Feb 1831, discusses recent explosion at Blundell and Sons colliery, Wigan, and its possible causes through fire damp.
/4 19 Sep 1833, his return from Manchester; Aurora Borealis; snowfall in Yorkshire.
/5 24 Mar 1837, his plans to publish his meteorological lectures.
/6 1 June 1835, the British Association meeting at Dublin, doesn't know if can go; discusses a project.
Volume 2: /1 Monthly barometer, thermometer, rainfall, measurements at Ackworth, 1843.
/2 24 Aug. 1835, says unable to visit Dalton, engaged on meteorological work for the British Association; invites Dalton to visit his school, mentions his visit to Cader Idris, and his son's ascent of Snowdon.
/3 14 May 1842, sent copy of his Cycle of the Seasons, and intends to send other copies to Peter Clare, hopes one can be kept by the Lit and Phil's library.
/4 25 Jan. 1844, re. meteorological readings taken at Ackworth school, comments on recent wintery conditions, and expresses concern at how weather is currently being recorded in London (with envelope).
Dated at Ackworth or no place given, except 1/2 London, 1/6 Tottenham (Middlesex), 2/2 Manchester.