( X ) 
ON 
THE METEOROLOGY OF ENGLAND 
THE QUARTER ENDING SEPTEIVIBEU 30, 1859. 
By JAMES GLAISHEE, Esq., F.E.S., 
SEC. OF THE BEITISH METEOKOLOOICAL SOCIETT. 
the 1st July to the 27th of August the weather was unusually 
fine and hot. From August 28th to September 22nd a cold period 
prevailed ; and from September 23rd to the end of the quarter iliv 
temperature was daily in excess. The temperature of the air in the 
shade reached 92^° on July 12, and 93° on the 13th and 18th; the 
mean temperature of these days was 75^-7, 75°"2, and 74''-3 respec- 
tively, and on seven other days in the month the mean temperature 
exceeded 70°. In the years 1826 and 1837 the mean temperature 
exceeded 70° on nine days; but back to the year 1814 there is no 
instance of 10 days in the month of July of such high temperature. 
It sometimes happens that several years together pass, as in the 
years 1838, 1839, 1840, 1841, and 1842, withotit any instance of a 
mean temperature for the day reacliing 70° ; and there was but one 
only in each of the thi-ee following years 1842, 1843, and 1844. 
The mean temperature of the month was 68°-l, whilst its average is 
r)l°-4 ; the excess, therefore, for the whole month was 6°-7. The 
month of August was for the most part warm ; its mean temperature 
was G3V, showing an excess of 3° nearly. September was chiefly 
cold till the 22nd, and very warm from the 23rd ; its mean tem- 
perature was 56f°, being i° above the average of 88 years. The 
mean temperature for the three months ending September was 
(>2°-8. In 1779 it was 63°-2 ; 1818, 63°-5; 1846, 62°-6 ; and 1857, 
63°'3 ; in all other years since 1771 it has been less than 62f ° ; so 
that in three coi-responding periods only, during an interval of 88 
years, has the temperature of the quarter been exceeded. 
The mean temperature of the dew-point was above its average 
value in July, about its average in August, and below it in Sep- 
tember. The excess, however, of temperature in July being greater 
than the excess of temperature of the dew-point, and the comparative 
high temperature of the other two months, caused the degree of 
Immidity of the air to be less than usual tluoughout the quarter. 
The pressure of the atmosphere was greater than its average in 
July, of nearlj^ its usual value in August, and less in September. 
The decrease in the readings of the barometer from month to montli 
was about 0-1 inch, and was unusually uniform all over the country. 
The fall of rain in the quarter exceeded its average by 0-7 inch. 
The deficiency xipon the year is thus reduced to inch only. 
The mean temperature of the air at Greenwich for the thri'c 
months ending August, constituting the three smnmer monthy, was 
64°*3, being 4"-3 above the average of 88 years. 
