( XII ) 
ON 
THE METEOROLOGY OF ENGLAND 
DURING 
THE QUARTER ENDING DECEMBER 31, 1861. 
By JAMES GLAISHEE, Esq., F.E.S., 
EEC. OF THE BRITISH METEOROLOOICAI. SOCIETY. 
The warm period wLich set in on tlie 28tli of September continued 
till the end of October. The mean temperature of this month was 
54°"9, being in excess of the average of 90 years by 5°"4, of 43 years 
by 5°-0, and of the preceding 20 years by 4^-7. A marked change 
took place on the 1st of November, and the temperature till the 
24th was, with the exception of the 5tli and 6th, always below the 
average. On the 25th another great change took place fi"om low to 
high temperature. This warm period continued to the 24th of 
December, the average daily excess being 3|° : from Christmas Day 
to the end of the year was cold, exhibiting a deficiency of tempera- 
ture to the amount of 3i° daily. 
The mean high day temperature in October was 5f° in excess, in 
November was 2° in defect, and in December was 1° in excess of 
their respective averages. 
The mean low night temperature in October was 4° in excess, in 
November was 3i° in defect, and in December i° in excess of their 
averages. 
The mean temperature of the air was 4|° in excess in October, 
2i° in defect in November, and 1° in excess in December, as com- 
pared with the averages of the preceding 20 years. 
The mean temperature of the dew-point was 5°-4 above in 
October, 3° below in November, and 0°-4 above in December, their 
respective averages. The mean for the quarter was 0°'9 in excess, 
therefore the amount of water mixed with the air was greater than 
usual. 
The mean pressure of the atmosphere was a little in excess in 
October and December, and in defect in November, but upon the 
quarter it differed very little from its average value. 
The fall of rain in October was 0 9 inch, in November 5-2 inches, 
and in December 1-3 inch. The total fall for the quarter was 7-4 
inches, being about i of an inch more than the average. The fall 
in November was the greatest in this month for 45 years, with one 
exception, viz., in 1853, when the amount of rain was 6 inches. 
The total fall of rain for the year on the ground is 20-8 inches. 
The mean temperature of the air at Greenwich for the three 
months ending November, constituting the three autumn months, 
was 50^-9, being l°-5 above the average of the preceding 90 years. 
