134 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



The results from Wisley are as follows : — 



Mean temperature of the air in shade 53°.3 



Highest „ „ „ 70°.7 on the 2nd 



Lowest „ „ „ 36°.7 „ 21st 



Lowest ,, on the grass 30°.0 „ 21st 



Number of nights of ground frost ... ... ... ... ... ... ... 1 



At 1 ft. At 2 ft. At 4 ft. 

 deep. deep. deep. 



Mean temperature of the soil at 9 a.m 53°.5 53^.9 55°.5 



Highest „ „ „ 58°.l 57°.l 57°.0 



Lowest „ „ „ 49°.8 51°.l 53°.5 



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



represented by 100) 91 % 



Kain fell on 14 days to the total depth of... ... ... ... ... ... 3*04 in. 



(Equivalent to about 14 gallons of water to the square yard.) 



Heaviest fall on any day 0*61 in. on the 12th 



The prevailing winds were north-easterly. 



The average velocity of the wind was 4 miles an hour. 



There were 67 hours of bright sunshine, equal to 21 per cent, of the greatest 



possible amount. 

 There were 10 days on which no sunshine was recorded. 



November. — The weather of November was in marked contrast 

 to that of the preceding month, for whilst October had been unusually 

 warm, November was one of the coldest, and at the same time one of 

 the wettest, on record. This was chiefly due to the constant succession 

 of atmospheric depressions which traversed the country, bringing in 

 their rear in each case a stream of cold northerly winds from Arctic 

 latitudes. The result was that the mean temperature of November at 

 Wisley was 15° lower than that of October, the normal difference being 

 only 5h^. Frosts were registered by the screened thermometer on 

 nineteen days, and on the grass on twenty -three occasions; the lowest 

 screen reading being 20*^, and the lowest on the grass 16^. The rainfall 

 at "Wisley did not greatly exceed the average, but a measurable amount 

 fell on fifteen days and a trace on five other days; in other parts of 

 England, however, the excess of rain was greater. Notwithstanding 

 the disturbed weather a fair amount of sunshine was registered, and in 

 most districts the percentage of the " greatest possible " amount was 

 above the average; at Wisley it was 30 per cent, of the possible amount, 

 but many southern and western districts considerably exceeded this 

 figure. 



The results from Wisley are as follows : — 



Mean temperature of the air in shade 38°.6 



Highest „ „ „ 52°.7 on the 27th 



Lowest „ „ „ 19°.8 „ 23rd 



Lowest „ on the grass 15°. 8 „ 22nd 



Number of nights of ground frost 21 



At 1 ft. At 2 ft. At 4 ft. 



deep. deep. deep. 



Mean temperature of the soil at 9 a.m 40°.6 43°.2 48°.3 



Highest „ „ „ 50°.4 51°.0 63°.3 



Lowest „ „ „ 35°.6 38°.7 44°.3 



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



represented by 100) 86 % 



