( H ) 
ON 
THE METEOROLOGY OF ENGLAND 
DURING 
THE QUARTER ENDING SEPTEMBER 30, 1863. 
By JAMES GLAISHEE, Esq., F.E.S., 
SEC. OF THE BRITISH METEOROLOGICAL SOCIETY. 
From July 1st to 15th, excepting two days, the temperature of the 
air exceeded the average by 2i°. This was followed by a cold 
period extending to August 1st, during which the daily deficiency 
averaged 3f°. On July 19th the temperature fell to 32° in the air, 
and much lower on the ground, at most places north of London. 
A warm period succeeded, and continued till August 16th, tbe excess 
of temperature amounting to S£°. From the 1 7th August to the end 
of September it was cold, the average daily deficiency being 2i°. 
The mean high day temperature of the air was i° in excess in 
July, 1° in excess in August, and 4° in defect in September, as com- 
pared with the averages of the preceding 22 years. 
The mean low night temperature of the air was 31° in defect in 
July, i° in excess in August, and 3° in defect in September. 
The mean temperature of the air was 1° in defect in July, +° in 
excess in A;igust, and 3i° in defect in September. 
The mean temperature of the dew-point was 2° in defect in July, 
0 o, 5 in defect in August, and 4° - 3 in defect in September. The 
degree of humidity was below its average value. 
The pressure of the atmosphere in each month was slightly in 
excess in July, and a little below the average in August and Sep- 
tember. 
The fall of rain in July was 0-9 inch, in August 1*8 inch, and in 
September 3-2 inches; the total fall for the quarter was 5 - 9 inches, 
being 1*6 inch below the average of the preceding 47 years. 
The temperature of vegetation as shown by a thermometer placed 
on grass was below 30° on 4 nights, between 30° and 40° on 2G 
nights, and above 40° on the other 62 nights. 
The mean temperature of the air at . Greenwich in the three 
months ending August, constituting the three summer months, was 
G0 o- 3, being 0 o, 2 above the average of the preceding 92 years. 
