( X ) 



ON 



THE METEOROLOGY OF ENGLAND 



DURING 



THE QUARTER ENDING SEPTEMBER 30tii, 1858. 

 By JAMES GLAISHEE, Esq., F.E.S., 



SEC. OF THE nUITISH METEOKOLOGICAL SOCIETY. 



July. — Till the 10th the air was cold, being 5°-7 below the average 

 temperature ; it became warm until the 25th, the mean excess being 

 2°'5 ; from the 25th till the end of the month cold, the average 

 deficiency being 2°-5. The mean temperature of the month was 

 about 1° below the average. 



August was warm till the 24:th, being 2° above the average ; then 

 till the end of the month cold, the average deficiency being 2°-5. 

 The mean temperature was 1°'5 above the average of the preceding 

 87 years. 



September was warm throughout, being 4° in excess of the 

 average. The mean temperature of the month has been but four 

 times exceeded during the last 87 years, viz. in the years 1779, 

 1795, 1815, and 1818, Avhen the mean temperatuie was respectively 

 60°-7, 60°-8, 62°-3, and 60°-7. 



The mean temperature of the dew-point was below its average 

 in July and August, and above in September. The mean degree of 

 himiidity was in defect in each month of the quarter. 



The mean reading of the Barometer was in defect in July, and 

 in excess of the average in August and September ; it was slightly 

 in excess for the quarter. 



The fall of rain was a little above the average in July, one inch 

 below in August, and li inch below in September; for the quarter 

 there was a deficiency of about half an inch. 



Thunderstorms were fi-equent during the quarter. 



The mean temperature of the air at Greenwich for the quarter 

 ending September, constituting the three summer months, was 62°-5, 

 being 2^*5 above the average of 87 years. 



