( iv ) 
* 
ON 
THE METEOROLOGY OF ENGLAND 
DURING 
THE QUARTER ENDING DECEMBER 31, 1863. 
By JAMES GLAISHER, Esq., F.R.S., 
SBC. OF THE BRITISH METEOROLOGICAL SOCIETT. 
Till October 9th the weather was alternately warm and cold ; on 
the 10th a warm period set in, continuing to the 22nd, the average 
daily excess being nearly 5° ; thence to November 13th the tem- 
perature was variable, the average daily deficiency being rather 
more than 1°. For the remaining 48 days of the quarter the 
temperature was greatly above the average, the excess amounting to 
4i° daily. The period from October 30th till December 4th was 
unusually stormy. 
The mean high day temperature was about the average in October, 
2° in excess in November, and 3 0, 4 in excess in December. 
The mean low night temperature was 2 0, 1 in excess in October, 
2 0, 9 in excess in November, and 1°-1 in excess in December. 
The mean temperature of the air was 1° in excess in October, 
1 0, 75 in excess in November, and nearly 3° in excess in December. 
The mean temperature of the dew-point was 1 0, 25 in excess in 
October, 2°*5 in excess in November, and l°-5 in excess in December ; 
the degree of humidity being about its average in October and 
November, and below in December. 
The pressure of the atmosphere was a little below its average in 
October, and a little above in November and December. 
The fall of rain was 1*7 inch in October, 1*8 inch in November, 
and 1-1 inch in December. The total fall for the quarter was 4*6 
inches, being 2h inches below the average of the preceding 46 
years. 
The temperature of vegetation was below 30° on 28 nights ; 
between 30° and 40° on 36 nights ; and above 40° on 28 nights. 
The mean temperature of the air at Greenwich in the three 
months ending November, constituting the three autumn months, was 
50 o- 3, being 0°-9 above the average of the preceding 92 years. 
