Calendar of Nature. 181 
the 9th what appeared a heavy storm passed over to the north-east, but 
no thunder was heard here. The evaporation 0-2 of an inch. 
August. The same similarity to the weather of 1823, noticed last month, 
occurred again in this; the minimum of the thermometer the same, and 
the range only 1° ereater than at that time; the mean, however, was less 
than any one in the last 13 years; the month was consequently cold, and 
the quantity of rain was unusually great, being only exceeded by the quan- 
tity which fell in last August. From ie 22d to the 28th were continual 
gales of wind from the west and nor th-west, and nearly half the rain fell in 
that time. Thunder heard about midnight of the 27th, The evaporation 
0°39375 of an inch. 
September, On 19 days rain fell, and the total quantity was greater than 
in the last 3 years; the mean temperature below any one in September 
since 1820, and the maximum lower than ever noticed, by the journalist, 
in the same month. A corresponding depression was observed in the baro- 
meter, the mean being lower than for 13 years. Thunder heard on the 
12th and 15th.. The evaporation 0°3125 of an inch. 
October, The month was distinguished by a remarkably early fall of 
snow, the earliest that has occurred during the journalist’s observations. 
The 6th was a fine autumnal day; on the next morning rain fell for some 
little time, when snow followed for some hours but did not lie; the quan- 
tity of rain and melted snow on that day was nearly half an inch. The 
mean temperature of the month lower than since 1823, another instance of 
the similarity of the weather in the two years. The barometer lower than 
last year, but above the av erage of the month ; ; the whole quantity of rain 
and melted snow less than usual; ; the wind betw een north and west during 
the greater part of the month. A lunar halo, with misty area, seen on the 
15th from 7 to 10 P.M. The evaporation 0°15 of an inch. The last very 
early fall of snow was on the 21st of October, 1819. 
November. The mean temper ature of the month below any one in the 
same month during the last 7 years, although the maximum was above that 
of 1826, and the extreme of cold not equal t to that of last year ; the quantity 
of rain less than for many years, with the exception of what fell in last 
year. So small a range in the barometer has not cecurred during the last 
12 years; the mean above the general average of the month, but not so 
high as in 1827. About 6 in. of snow fell on the 24th, but was all melted 
in 2 days. Lunar halos, with misty areas, seen on the nights of the 8th 
and 9th. The evaporation 6°075 of an inch. 
December. The barometer durmg the month was very high, the mean 
much above any one in the last 7 years, and the maximum higher than 
since December, 1827, the range ‘aly 0°98 of an inch. The month was 
also extremely cold, the mean being upwards of 10° below those of the 
last 3 years. Snow fell on the 18th, 19th, 21st, 23d, 24th, and 27th; the 
whole quantity little more than 3in. The rain and melted snow only 
0°33125 of an inch, a quantity little more than one eighth of what fell m last 
December, which was much Jess than usual. The evaporation 0°03125 of © 
an inch, 
SCOTLAND, 
Diagram ( fig. 36.) , showing the Motion of the Mercury in the Barometer and 
Thermometer, and the Dew Point, or the Mean of each, for every Ten Days 
in December, 1829, and January, 1830; also the Depth of Rain in the 
Pluviometer, and the Quantity of Moisture evaporated in the Evaporating 
Gauge, for the same Period; as extracted from the Register kept at 
Annat Gardens, Perthshire, N. lat. 56° 234’, above the level of the sea 
172 ft., and 15 miles from the coast, being the mean of daily observations 
at 10 o’clock morning and 10 o’clock evening. 
N 3 
