Meteorological observations and essays / By John Dalton.

  • John Dalton
Date:
1834
Catalogue details

Licence: Public Domain Mark

Credit: Meteorological observations and essays / By John Dalton. Source: Wellcome Collection.

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    1788. In the beginning of December the frost set in, and continued for 5 weeks; the mean state of the thermometer for which time was 28°; and at the end of it the frost had penetrated 16 or 18 inches into the ground.—Above 8 inches of snow fell on the 31st. 1789. Not much severe frost after the middle of January.—Snow on the 14th and 2ist of the same. Much snow from the 9th to the 14th of March; about 6 inches deep, at an average, both at Ken- dal and Keswick. Frost in November; very little in December. 1790. Little either frost or snow, in the beginning of the year. On the 17th, 18th, and 19th of December, much snow, 4 inches deep, at an average, at both places. 1791. But little frost or snow in the beginning of the year. On the 8th, 9th, and 10th of December, a very great quantity of snow; the average depth, at Kendal, was 11 inches, which was the greatest observed there for 24 years past; the average depth at Keswick was about 8 inches. It was on the evening of the succeeding day, the 11th, that the extreme of cold took place; the air was clear, and the wind from the N. but very moderate; the barometer was 29.75; it was rising before this event, and it fell afterwards. At Kendal, the thermometer at 84 P. M. was — 6°, upon the snow; afterwards it fell to — 10°; in the morning of that day it was 15°, and 20° at noon.—During the extreme cold, a prodigiously dense mist was carried from the river into the town, in which the thermo- meter fell no lower than 3°, whilst it was — 10° to the N. of the river, and the air quite clear. The next morning the thermometer