54 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



The results from the observations made at Wisley are shown in 

 the following table : 



May. 



Mean temperature of the air in shade . 

 Highest temperature of the air in shade 

 Lowest temperature of the air in shade 

 Lowest temperature on the grass 

 Number of nights of ground frost 



55-6° 



77-2° on the nth 

 34-1° on the 25th 

 22-2° on the 1st 

 6 



At 



depth 



of 



1 ft. 



2 ft. 



4 ft. 



56-1° 



54'5° 



527° 



60-2° 



57-4° 



54-8° 



507° 



5i-o° 



49-9° 



Mean temperature of the soil at 9 a.m. . 

 Highest temperature of the soil at 9 a.m. 

 Lowest temperature of the soil at 9 a.m. 



Mean relative humidity of the air at 9 a.m. (complete saturation 

 being represented by 100), 74%. 



Rain fell on n days, to the total depth of 1*25 inch (equivalent 

 to about 5 1 gallons of water to the square yard). Heaviest fall on 

 any day 0*28 inch, on the 30th. 



The prevailing winds were from between south and west, and 

 northerly. 



The average velocity of the wind was 5 miles an hour. 

 There were 176 hours of bright sunshine, equal to 37 per cent, of 

 the greatest possible amount. 



There were 2 days on which no sunshine was recorded. 



June. — The weather of June was of a most unsettled and broken 

 character, due to the influence of a constant succession of atmospheric 

 depressions which reached us from the Atlantic. The third week of 

 the month was the only part of it during which really summer weather 

 was experienced, and on the 19th the temperature at Wisley reached 

 80 degrees, and 79 degrees three days later ; but on nearly every other 

 day of the month the maximum temperature was below 70 degrees 

 whilst on the 3rd the minimum fell so low as 40 degrees. At Wisley 

 there were no ground frosts although on more than one occasion there 

 was a perilously close approach to it. The rainfall was in most parts 

 of the Kingdom excessive, in many districts it was double the usual 

 amount and in a few it was three times the average, whilst there were 

 isolated patches over which the fall was heavier still. But, notwith- 

 standing the heavy rainfall some districts were favoured by an average 

 amount of sunshine, although this was far from being a general ex- 

 perience, over some northern districts less than half the usual amount 

 was recorded, and taking the Kingdom as a whole the record of bright 

 sunshine was very deficient. 



The results from the observations made at Wisley are shown in 

 the following table : 



