The Edinburgh New Philosophical Journal, Vol. XLIX: April-October 1850Various
Science
The Edinburgh New Philosophical Journal, Vol. XLIX: April-October 1850
Various
Science -- Periodicals
_Remarks on the Weather in 1849._
_January._--A damp wet month, except the first week, when sharp frost
prevailed. The mean temperature is 0°·68 _above_ the average. On the
night between the 2d and 3d, a naked thermometer on the grass fell to
4°, and one on raw wool to 2°·8 below zero, being the lowest
temperature I have recorded. The radiation indicated by raw wool was
21°·5. Between one and two o'clock on the morning of the 10th, a
terrific thunder-storm burst suddenly over the town, and spread great
alarm amongst the slumbering inhabitants. Seven or eight dazzling
discharges of the electric fluid, followed by deafening crashes,
succeeded each other in about as many minutes. The storm was almost
vertical; and between several of the flashes and the accompanying
thunder, there was scarcely an appreciable interval, certainly not
more than a single second of time. The war of the elements ceased as
suddenly as it commenced, and altogether, the storm did not last more
than ten minutes. The wind, which previously blew a heavy gale, lulled
almost to a calm as the last peal died away. The storm was followed by
a heavy fall of rain and hail. It appears to have been pretty much
confined to this town and neighbourhood. Thunder was also heard on the
evening of the 14th, and lightning was seen on the nights of the 21st,
26th, and 29th. Saturn's ring was perceived at this Observatory on the
night of the 31st, after a long continuance of damp, wet weather. As
this singular appendage was readily seen, and was well and sharply
defined, I have no doubt the instrument would have shewn it ten or
fourteen days earlier, had the nights been at all favourable. The ring
was also seen on the night of the 11th of September 1848, during its
temporary reappearance.
_February._--A fine, dry, and mild month. The temperature 3°·49
_above_ the average of twelve years. On the 11th, the barometer
attained the remarkably high point of 30·82 at this Observatory, which
is about 90 feet above the sea level. At the Royal Observatory,
Greenwich (40 feet above sea), the maximum was 30·85, being greater
than any reading since January 1825, when the barometer at the Royal
Society's apartments attained to 30·841, at 81 feet above the sea
level; and there is no other instance recorded in the Philosophical
Transactions of a reading so high as 30·8, from the commencement of
the series in 1774. The maxima of pressure recorded on the 11th in
various parts of the country, were all found to give a reading of
30·90 at the mean sea level.
On the 18th, primroses were in flower on the cliffs between Panton and
Harrington.
_March._--Similar to February. Temperature 2°·29 _above_ the average,
and the complement of the dew-point 2°·40 _below_ the mean of the two
preceding years.
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