( XII ) 
ON 
THE METEOROLOGY OF ENGLAND 
DURING 
THE QUARTER ENDING JUNE 30, 1864. 
By JAMES GLAISHEK, Esq., F.K.S., 
SEC. OF THE BRITISH METEOROLOGICAL SOCIETT. 
The quarter ending March closed with cold and changeable 
weather, which continued to the 8th of April; the average daily 
deficiency from March 16, to April 8, was 1 0, 8. A warm period 
set in on the 9th, and continued to May 22 ; the excess for these 
44 days was 3J° nearly. From May 23 to the end of the quarter 
the weather was cold, with the exception of June 6 to 10 ; the 
deficiency for the 39 days, ending June 30, amounted to 2i° nearly 
daily. 
The mean temperature of April was 48 0, 2, being l°-7 above the 
average of the preceding 23 years. 
The mean temperature of May was 53°-8, being 0°*9 above the 
average of 23 years. 
The mean temperature of June was 57°-4, being 1°*7 below the 
average of 23 years. 
The mean high day temperatures for the months of April, May, 
and June were 58°-3, 64°-8, and 69°-5, being l°-3 above, 0°-3 below, 
and 1 0, 4 below their respective averages. The mean low night 
temperatures for these three months were 40°, 44 0, 9, and 49 0, 1, being 
1 0, 3 above, 0°-7 below, and 1 0, 1 below their averages respectively. 
Therefore both the days and nights were warm in April, and cold 
in May and June. 
The mean temperature of the dew-point was 0 o- 2 below its 
average in April, was its average in May, and 2°*1 below it in June. 
The degree of humidity was very uniform, and always its 
average. 
The pressure of the atmosphere was in excess in the months of 
April and May ; in the former to less than 0"2 in., and in the latter 
to less than 0*1 in. ; in June it scarcely differed from its average. 
The fall of rain was in defect in each month. It was 0*7 in. in 
April, being 1*1 in. too small; 1-9 in. in May, being 0*2 in. in 
defect ; and 0 - 9 in. in June, or 1 in. below the average. 
The mean temperature of the air at Greenwich in the three 
months ending May, constituting the three spring months, was 
47° - 8, being l°-3 above the average of the preceding 93 years. 
