REPORT ON METEOROLOGICAL OBSERVATIONS, WISLEY, 1914. 85 



At depth of 



1 ft. 2 ft. 4 ft. 



Mean temperature of tho soil at 9 a.m. . . . 51*9° 53' 6° 54" 5° 



Highest „ „ „ „ . . . 55° 5*6° 5°° 



Lowest „ „ , 48 0 51 0 53 0 



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

 sented by 100), 89 per cent. 



Rain fell on 11 days, to the total depth of 1-50 in. (equivalent to about 7 

 gallons of water to the square yard). Heaviest fall on any day 0-43 in., on the 

 14th. 



The prevailing winds were light and variable in direction. 

 The average velocity of the wind was 2 miles an hour. 



There were 82 hours of bright sunshine, equal to 25 per cent, of the greatest 

 possible amount. 



There were 4 days on which no sunshine was recorded, and 7 on which the 

 record was less than one hour. 



November. — With the advent of November the character of the 

 weather underwent a change, and instead of the quiet, mild, and dull 

 conditions of October it now became windy and wet, but not cold ; 

 indeed, considering the time of the year, it was decidedly warm during 

 the first half of the month, and then, after a colder interval, again mild 

 until the month closed. During the first half the temperature at Wisley 

 twice rose to 60 degrees, and in the screen it did not fall to 32 degrees, 

 but during the cold snap the maximum never rose to 40 degrees, and at 

 night the thermometer on the grass fell so low as 17 degrees, and 

 Gunneras and other tender plants were cut down by the frost. Gales 

 and strong winds were frequent, and brought with them a considerable 

 amount of rain, so that the month was decidedly wet all over the 

 kingdom, the excess at Wisley amounting to nearly 50 per cent. 

 But notwithstanding the large rainfall and the cold spell it was a 

 relatively bright month, and the amount of sunshine exceeded the 

 average. At Wisley the total was 28 per cent, of the greatest possible 

 amount, and, expressing It in another way, in London it was 50 per 

 cent, more than the amount usually experienced in November. 



The Wisley results are shown in the subjoined table : — 



Mean temperature of the air in shade . . . 44'6° 



Highest „ „ ,, „ ... 6o° on the 3rd and 5th 



Lowest ,, ,, „ „ ... 25 0 ,, 18th 



Lowest on the grass . . . 17 0 „ 18th 



Number of nights of ground frost . . . . . . .8 



At depth of 

 1 ft. 2 ft. 4 ft. 



Mean temperature of the soil at 9 a.m. . . . 44*9° 47'6° 504 0 



Highest „ „ „ „ ... 51 0 52 0 53° 



Lowest „ „ „„.... 39 0 44° 47° 



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

 sented by 100), 88 per cent. 



Rain fell on 17 days, to the total depth of 3*08 in. (equivalent to about 14^ 

 gallons of water to the square yard). Heaviest fall on any day 0*79 in., on the 

 15th. 



The prevailing winds were south-westerly. 



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



There were 72 hours of bright sunshine, equal to 28 per cent, of the greatest 

 possible amount. 



There were 8 days on which no sunshine was recorded. 



December. — The most outstanding feature of the weather of the 

 closing month of the year was the continuous, and generally heavy, 



