| Description | Hourly readings taken from 6.00pm on 20 June 1837, to 6.00am on 22 June 1837 [Summer solstice]. Columns record: dates and times of observations, readings from a barometer 115 feet above sea-level, a Fahrenheit thermometer attached to the barometer, a Fahrenheit thermometer detached in open air facing north, a Fahrenheit thermometer in a 60-feet deep well, with wind direction and general remarks on the weather. A note on timekeeping describes the use of a sextant and pendulum clock.
Headed [p.1]: 'Meteorological observations taken at Tangier...'. Signed [p.3] by John Hay Drummond-Hay. Endorsed [p.4]: 'Meteorological Observat. taken at Tangier by John H. Drummond Hay 1837'. |