| Description | Hourly meteorological observations taken from 6.00am on 21 December to 6.00am on 22 December 1839 [December solstice]. Columns for day and hour, barometer readings and difference, thermometer [attached?], hygrometer (thermometer, dew point, and difference), Reaumur thermometer in Sun, thermometer in shade, wind direction and strength, and general weather remarks.
Headed [p.1]: 'Quarterly Meteorological Observations taken at the Observatory on the 21st & 22d December 1839'. Signed 'John Morton. In charge of the observatory'. Various minor inscriptions [p.2] including: 'Hourly Metl. Observ. Mauritius Dec 1839'.
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