Meteorological observations at the Royal Society, London, by John David Roberton Hourly meteorological observations made at the Royal Society's apartments at Somerset House, London, at the December (Winter) solstice. Columns for: hours of observation; barometer corrected flint glass; barometer corrected crown glass; attached thermometer; external thermometer; old standard barometer; attached thermometer; difference of wet and dry bulb thermometer; dew point; rain in inches; wind; with general remarks. Headed: 'Meteorological Observations made at the Apartments of the Royal Society, Somerset-House, for Thirty-seven hours. Commencing 6. A.M. of the 21st Decr. 1842, and ending 6 P.M. of the following day. Greenwich mean time. By Mr. John D. Roberton, Assistant Secretary, Royal Society'. Inscribed verso: '1842 March - 42 hours. June 40 [hours] Decr. 37 [hours]'. With an alternative endorsement, signed by J D Roberton, struck through. 21-22 December 1842