148 
4’lie total rainfall for the month was 0.57 in. deficient. 
Ihe mean temperature of the autumn months, September to 
November', was 0.8 degree below the average of the autumn 
months in the preceding nine years. The mean barometric pres- 
sure was 0.211 in. in excess of the average; and the total rainfall 
was 1.78 in. deficient. 
December. 
liiE first seven days of this month were exceedingly cold, the 
thermometer never rose above the freezing-point ; the day tempera- 
tures averaged only 30.4; and the night temperatures only 19.8. 
On the night of the Gth the thermometer fell to 12.0, and tlie 
maximum temperature on the 7th was only 27.0. The barometric 
pressure fell from 29.923 at 9 p.m. the 1st, to 29.601 at 9 p.m. 
the 4th, but increased f[uickly to 30.401 at 9 p.m. the 7th. From 
the 8th to the 27 th unusually liigh barometric pressure was 
recorded, all the readings being above 30 inches. During this 
period the air ivas very calm, the sky generally cloudy, with 
frequent fogs in the mornings and evenings. The weather was very 
cold, frosts occurring nearly every night ; and on the 11th, 17th, 
and 21st, the_ thermometer did not rise above the freezing-point. 
At 9 p.m. the 27th the barometer recorded 30.254, and the ther- 
mometer 31.0. A very sudden change occurred in the following 
24 hours, and at 9 p.m. the 28th the barometer registered 29.830, 
and the thermometer the remarkably high temperature of 53.0. 
The barometer continued to fall to 29.511 at 3 p.m. the 31st, and 
strong gales from the S.S.W. and S.W. were recorded on the last 
four days. The daily velocity of the wind was 333 miles on the 
28th, 262 on the 29th, 391 on the 30th, and 301 on the 31st. 
This month, owing to the high barometric pressure, low 
temperature, dense fogs, and small rainfall, was one of the most 
remarkable on record. The mean barometiic i3r'essurc exceeded 
the average by 0.433 inches. The very unusually high reading of 
30.766 was recorded at 9 a.m. the 13th, and of 30.775 at 9 a.m. 
the 23rd ; and the only readings below 30 inches occurred on the 
first five and last four days of the month. Frosts were recorded 
on 24 nights, and on nine days the temperature did not rise above 
the freezing-point. The mean temperature was 5.3 degrees below 
the average of the last ten years ; and IMr. Glaisher states that this 
