Paper 'A meteorological journal for 1840 kept at Allenheads, Northumberland, with a few remarks on the rain-gauge', by William Walton Daily meteorological observations [pp.1-25] made at 9.00am and at 3.00pm at Allenheads, Northumberland, England, 1 January-31 December 1840. Columns for date, barometer readings, with attached thermometer and an external thermometer. With rain in inches and direction of the wind at 9.00am, and general remarks. There is a concluding set of mean results for the year [p.26]. The main data is followed by 'A few remarks on the Rain-gauge', discussing problems of rain gauge design, with illustrations. This is annotated in pencil, with a final note [p.39] commencing: 'The Author is here misled by the circumstances of his Locality...L.H. 29 April 41' [Luke Howard]. Numbered and inscribed [p.1]: 'No.229...Recd. 18 March 1841 S.H.C.' [Samuel Hunter Christie]. Annotated [p.40]: 'Archives 10th June 1841 S.H.C.'. 13 March 1841