A meteorological journal of the year 1799, kept in London / by William Bent.

  • William Bent
Date:
[1800]
Catalogue details

Licence: Public Domain Mark

Credit: A meteorological journal of the year 1799, kept in London / by William Bent. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    EXPLANATION. THE Journal Is kept on the fouth fide, and near the middle of Pater- noller row, which is 51 feet higher than the bed of the river Thames. The Inftruments ufed are, a perpendicular Barometer with an open ciftern, two Fahrenheit’s Thermometers, and a De Luc’s Hygrometer. The Jour- nal of each month is divided into nine columns, which contain as follow; 1. The Day of the month, with the letter N or F affixed to that on which the moon is new or full. 2. The Hour of obfervation, morning and afternoon. 3. The height of the Barometer, in inches and 100 parts: it Is placed In a room on the ground floor. 4. The degrees of the Thermometer, hung out at a window, up one pair of flairs, facing the north. This inflrument when expofed three ftories higher, in frofly weather, finks from 2 to 3 degrees. 5. The degrees of the Thermometer, placed in a paflhge at the bottom of a flaircafe, where there is no fire-place. 6. The degrees of the Hygrometer, hung clofe to an outward door that is conflantly open in the daytime. 7. The degrees of Cloudinefs; the fun being frequently obfcured with 3, and feldom vifible with 4; but when h is inferted, the atmofphere is fo hazy above, and when f, fo foggy below, that no diflinftion of clouds is per- ceptible. 8. The point and force of the Wind ; 3 being rather brifk, and 4 blow- ing ftrong. 9. Further obfervations and intermediate alterations of the Weather; in which the period [.] and colon [:] are ufed to denote afpace of time between any change, the latter being a diflinfUon for midday and midnight. *** The Remarks on Vegetation are obtained from a neighbouring vil- lage; the quantity of Rain from the vicinity of Temple-bar; an'd the Obfervations on Difeafes from a medical friend in the city.