Description | Daily observations of winds, weather, atmospheric pressure and temperature, usually with six readings, at sunrise, 8a.m., 12 noon, 4p.m., sunset and 8p.m. Wind direction and strength are noted, with general weather remarks on cloudiness, rain and storms.
The entry for 2 June 1791 includes the note; 'Pack'd up the Board of Longitude's Barometer', used in observations to that point. The subsequent observations commence with the note: 'Mr. Furzer's Thermomr. a very good one by Ramsden. My own Thermomr. by Nairne & Blunt, small, & divided only to every two degrees, the whole scale from 0 to 212 being in length 6,23 inch. Both kept constantly out of their cases so that the bulb might be fully exposed to the air...'. The journal concludes with an extended commentary on the instruments used: 'The barometer made use of from Septr. 1788 to the 1 July 1791 was a common Barometer made by Burton belonging to the Board of Longitude & had no gage point to it. It was my intention to have it examined on its return to England...it seems that the observations made with that Barometer cannot be considered as worthy of much dependence. With respect to Mr. Furzer's, which he was so obliging as to spare me; it appears to be a very good one of Ramsden's construction and is furnished with a gage point...'.
Stamped [p.189]: 'Soc. Reg. Lond. ex dono Auctoris' and inscribed in ink: 'Jany. 22. 1795'. |