| Description | Daily meteorological readings at the Royal Society's apartments at Somerset House, London, England. The design of the printed form changes during this year. The earlier [January-February] retains the original data points. These are two sets of observations, from 9.00 a.m and 3.00 p.m. Both have basic readings of air pressure and temperature from an internal barometer with an attached thermometer, and an external thermometer, The morning readings also have highest and lowest points of a 'self-registering' [thermometer], with dew-point, rain and wind. Below these, general remarks on weather and cloud conditions. From 1 March, the form is expanded to incorporate readings from two barometers, flint glass and crown glass, and from dry and wet bulb thermometers, with difference.
The 'Meteorological Journal', kept by the Assistant Secretary, was published in the Philosophical Transactions each year, usually in parts during the year. |