In the early part of the evening the sky was clear, but at 8h 30m a dense mist rose from the river Derwent and entirely overspread a large segment of the northern horizon; whilst to the south, the atmosphere continued comparatively clear, the moon, within four days of full, shining brightly near the meridian. About 9h 10m, there was a faint luminous arch in the north, which was evidently a lunar rainbow, or rather a fog-bow, for no rain whatever was visible at the time. The light reflected by the arch was white, and perfectly free from prismatic colour. Its breadth was considerable, perhaps 4° or 5°, and its centre or highest part, passed close under the star beta Ursæ Majoris, so that the extreme altitude of the arch was probably about 18° or 20°. The edges were not sharply defined, but gradually shaded off. It was noticed that the denser the fog became, the more apparent was the arch, and _vice versa_, so that the phenomenon could not have been of an auroral character. The phenomenon was watched for ten or fifteen minutes, when the gradual dispersion of the fog, by destroying the refracting medium, put an end to this interesting appearance. _November._--As usual, a very dull, damp month, with but little difference between the temperature of the days and nights. Temperature 1°·20 _above_ the average. Early on the morning of the 2d, a swallow was seen on the wing in the immediate vicinity of this town. The maximum temperature of the day was 55°. Between the 9th and 12th inclusive, the extremes of day and night temperature only varied 2 degrees. _December._--A fine dry month with occasional frosty nights. Temperature 2°·15, and rain 2·19 inches _below_ the average. Two loud peals of thunder and much lightning on the night of the 14th. The remarkable meteor observed at Edinburgh on the evening of the 19th, and minutely described by Professor Forbes who witnessed it, was also seen at Whitehaven under the same circumstances and at the same time. LAST QUARTER.--The mean temperature of the last quarter of 1849 is 1°·15 _below_ the average, and the complement of the dew-point is 0°·87 _below_ the mean of the two preceding years. The average depth of rain for the quarter is 14·64 inches; in 1849 the quarterly fall is 12·62 inches, or 2·02 inches _under_ the normal quantity. The deaths in this quarter, in the town and suburbs, are 131, being 4 _below_ the average number. It is pleasant to have to announce a favourable change in the sanitary condition of this town, and to record the termination of an excessive mortality, which uninterruptedly prevailed for a period of two years and a half; for this is the only quarterly period wherein the deaths have not exceeded the average since March 1846. In the corresponding quarters of 1846, 1847, and 1848, the deaths were 215, 161, and 176 respectively. The births exceed the deaths by 34.