| Description | Daily temperature observations [in Fahrenheit] with readings at 8a.m., noon and 9p.m.[1779]; and readings initially at 7a.m., 2p.m. and 9p.m., then extending to 5a.m., noon, 3p.m., 6p.m. and 9p.m. [1790]. With notes on wind direction and strength, and general weather remarks, usually on cloud cover, rain and snow, but recording other phenomena, including mock suns and the aurora borealis.
Commencing: 'Meteorological journal kept at Cumberland House from Jany. 1 to March 4. 1779. and from Jany. 1 to June 3. 1790. by Joseph Colen. Lat. 53 degrees 56 3/4' North. Long. 102 degrees 11' West'. The author comments on the instruments in use for 1779 [p.48], 'The Thermometer used for foregoing Observations was a mercurial one divided the same as the Spirit Thermometer and made by Dollond.'.
Stamped [p.39]: 'Soc. Reg. Lond. ex dono Auctoris' and inscribed in ink: 'March 19 1795'. |