| RefNo | MA/230/13 |
| Previous numbers | MA.242 |
| Level | File |
| Title | Meteorological observations at the Royal Society, London, by John David Roberton |
| Creator | Roberton; John David (fl.1820s-1840s); British assistant secretary of the Royal Society |
| Date | 1 January 1840-2 January 1841 |
| Description | Daily meteorological readings at the Royal Society's apartments at Somerset House, London, England. There 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 flint glass and crown glass barometers with an attached thermometer, and an external thermometer, The morning readings also have highest and lowest points of a 'self-registering' [thermometer], with wet and dry bulb thermometer readings and the difference. The form has been slightly redesigned, with the addition of 'dew point'. Below these, general remarks on weather and cloud conditions.
The forms appear to have been arranged in two monthly batches [eg January-February, etc.] as several blank forms are inserted at the two monthly intervals in the earlier portion of the volume. The 'Meteorological Journal', kept by the Assistant Secretary, was published in the Philosophical Transactions each year, usually in parts during the year. |
| Extent | 1 volume: 760p. [recto pages only, verso pages blank]. |
| Format | Printed |
| Manuscript |
| PhysicalDescription | Ink on paper. Red library buckram binding by Maltby of Oxford. Spine gilding: 'Royal Society Meteorological Observations 1840 M.A.242'. Badge from the Royal Society's coat of arms below. |
| Dimensions | 228x137mm. |
| AccessStatus | Open |