64 JOURNAL OF THE ROYAL HORTICUL-TURAL SOCIETY, 



The records made at Wisley show : 



Mean temperature of the air in shade . . . .40-8° 



Highest „ „„,,.... 54° on the 9th 



Lowest „ „,,,,.... 27° „ 22nd 



Lowest „ on the grass . . . . .14° 



Number of nights of ground frost . . . . . . , .19 



At depth of 

 I ft. 2 ft. 4 ft. 



Mean temperature of the soil at 9 A.M. . . . 42-6° 44*9° 47' 4° 

 Highest „ » ... 48° 49° 49° 



Lowest „ „ „ „ ... 36° 40° 44° 



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

 sented by 100), 91 per cent. 



Rain fell on 13 days, to the total depth of I'li in. (equivalent to about 5 

 gallons of water to the square yard). 



Heaviest fall on any day 0-48 in., on the 23rd. 



The prevailing winds were south-westerly. 



The average velocity of the wind was 7 miles an hour. 



There were 44 hours of bright sunshine, equal to 18 per cent, of the greatest 

 possible amount. 



There were 17 days on which no sunshine was recorded. 



