( X ) 



ON 



THE METEOEOLOGY OF ENGLAND 



DURING 



THE QUARTER ENDING SEPTEMBER SOtii, 1857. 



By JAMES G L A I S 11 E E, Esq., F.R.S., 



SEC. OF THE BRITISH METEOROLOGICAL SOOIETr. 



Till the 9th of July the air was coH, and from the 10th to the 

 end of the quarter, with but few exceptions, it was warm, and at 

 times hot. The mean temperature of the month was 64°*5, being 

 3° nearly in excess ; chiefly due to high day temperature. 



August was warm throughout, excepting the 7th, 8th, 9th, 13th, 

 and 14th, when the daily temperature was slightly in defect. The 

 mean temperature of the month was 65°'8, being 5° nearly in excess, 

 and due to both warm days and nights, but rather more to the 

 former than the latter. Since the year 1771, a date as far back as 

 trustworthy records extend, there has been one instance only in 

 which the mean monthly temperature exceeded that of this month, 

 viz. in July, 1778, when it was 67°*0, thei'cfore the month of August 

 of the present year has been the hottest of any for eighty years. The 

 temperature at a few places reached 90°, and was but little less at 

 many places. 



September was warm throughout, with the exception of the 2nd, 

 3rd, 4th, and 11th. The mean temperature of the month was 59£^°, 

 and exceeded the average by 3°, and due to both warm days and 

 nights, but to a greater extent to the latter than the former. 



The mean temperature of the dew point was above its average in 

 each month of the quarter, but in July and August to less amounts 

 than the excesses of temperature, and consequent!}' the air was less 

 humid in those months than usiial. In September, however, it 

 exceeded the excess of temperature, and consequently this month 

 was more humid than usuah 



The fall of rain was deficient in July, of its average amount in 

 August, and in excess in September. 



The mean temperature of the air at Greenwich for the quarter 

 ending August, constituting the three summer mon.ths, was 64°-0, 

 being 3°*7 above the average of eighty-six years. 



