128 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY, 
quite at the beginning of the month, but after the first week no day 
with a real midsummer temperature was experienced, and many days 
that were rainless were nevertheless dull and sunless, and very cool. 
The results obtained from the observations made at the Garden 
are shown in the following table : 
Mean temperature of the air in shade .... 60-4° 
Highest „ „„.... 8i° on the 4th 
Lowest ,, .... 46 0 13th 
„ ,, on the grass ..... 37 0 ,, 13th 
At depth of 
1 ft. 2 ft. 4 ft. 
Mean temperature of the soil at 9 a.m. . . . 62-0° 61 -i° 58-3° 
Highest „ „ 66-5° 63-5° 58-9° 
Lowest ,, „,,••• 5 8 ° 59*6° 57*2° 
Mean relative humidity of the air at 9 a.m. (complete saturation being repre- 
sented by 100) 76 per cent. 
Rain fell on 14 days, to the total depth of 3-51 in. (equivalent to about i6£ 
gallons of water to the square yard). Heaviest fall on any day 0-77 in., on the 
22nd. 
The prevailing winds were south-westerly and westerly. 
The average velocity of the wind was 6£ miles an hour. 
There were 193 hours of bright sunshine, equal to 39 per cent, of the greatest 
possible amount. 
There were 4 days on which no sunshine was recorded. 
August. — The weather throughout this month was in marked 
contrast to that of July. Although in some districts there were many 
thunderstorms, they were not spread over a very wide area, and at 
Wisley only one was experienced ; whilst nearly everywhere the ag- 
gregate rainfall for the month was less than usual, and the mean tem- 
perature above the average. These conditions were just what were 
required for gardens, and throughout the month plant and tree growth 
made excellent progress, as did also flowering plants and vegetables. 
The warmest period of the month was the second week, when the 
thermometer rose to 76 0 at Wisley, and although this was by no 
means an abnormally high temperature for August, yet, on the other # 
hand, the minima were also high and there were no cold nights, with 
the result that the range of temperature was small, and the average 
higher than usual. The month was not exactly a brilliant one, 
because, although more or less bright sunshine was recorded at Wisley 
every day, the amounts were sometimes small, and the total for the 
month was below the average. The conditions at Wisley were fairly 
typical of those experienced over the greater part of the kingdom, and 
the month may be justly summed up as warm, dry, and rather dull. 
The results obtained from the observations made at the Garden are 
shown in the following table : 
Mean temperature of the air in shade . . . . 61*4° 
Highest „ „ .... 76 0 on the 10th 
Lowest 42 0 ,, 30th 
,, „ on the grass .... 31 0 ,, 30th 
At depth of 
1 ft. 2 ft. 4 ft. 
Mean temperature of the soil at 9 a.m. . . . 63-2° 62-5° 59*6° 
Highest „ „ . . 65-6° 64-1° 60-5° 
Lowest „ . . 6o° 60-9° 587° 
Mean relative humidity of the air at 9 a.m. (complete saturation being repre- 
sented by 100) 81 per cent. 
