Barometric readings of some hills in England and Wales
Date
1686
Creator
Unknown, Artist
Object type
Archive reference number
Manuscript page number
p4
Material
Dimensions
height (page): 200mm
width (page): 150mm
width (page): 150mm
Subject
Description
A table of barometric observations by the Oxford mathematician John Caswell in the summer of 1686. Caswell (d.1712) reported some of his observations to Edmond Halley at the Royal Society.
Transcription
Observations of the weather in my hottest week of the last summer 1686, made iointly with the Baroscope and Thermoscope at several hours of the day, in order to find how much heat affects the Baroscope.
Transcribed by the Making Visible project
Transcribed by the Making Visible project
Object history
At the meeting of the Royal Society on 30 June 1686, ‘A letter of Mr. John Caswell to Mr. Halley, dated at Hart-hall Oxford, June 29, 1686, was read, giving an account of the hights of some hills in Wales and Shropshire, together with the observations of the hights of the barometer, on the tops of them’ (Birch 4:491).
4 August 1686, ‘A letter of Mr. John Caswell to Mr. Halley, dated August 3 1686, was read, containing a farther account of his observations of the hight of the mercury on Snowdon and other high hills in England and Wales’ (Birch 4:496).
4 August 1686, ‘A letter of Mr. John Caswell to Mr. Halley, dated August 3 1686, was read, containing a farther account of his observations of the hight of the mercury on Snowdon and other high hills in England and Wales’ (Birch 4:496).
Related fellows
Edmond Halley (1656 - 1742, British) , Astronomer
Associated place