56 



JOUENAL OF THE ROYAL HORTICULTURAL SOCIETY. 



The amount of bright sunshine registered varied a good deal, but in 

 several parts of the kingdom it exceeded the average, although not 

 to a great extent. The rainfall at some places in the north-west 

 exceeded the average by nearly 50 per cent., but over the greater 

 part of the kingdom there v^as a large deficiency of rain, and scarcely 

 any snow was seen anywhere. 



The results from Wisley are as follows : 



Mean temperature of the air in shade 40°-3 



Highest „ „ „ 54°-5 on the 17th 



Lowest „ „ „ 19°-0 „ 1st 



Lowest „ on the grass 12°- 1 „ 1st 



Number of nights of ground frost ... 13 



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

 deep. deep. deep. 



Mean temperature of the soil at 9 a.m 38°'6 38°*8 41°-3 



Highest „ „ „ ... 43°-5 41°--9 42°-8 



Lowest „ „ „ 34°-3 36°-l 40°-4 



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



represented by 100) 86 % 



Rain fell on 13 days to the total depth of , 1-17 in. 



(Equivalent to about 5| gallons of water to the square yard.) 



Heaviest fall on any day 0*27 in. on the 27th 



The prevailing winds were westerly. 



The average velocity of the wind was 8 miles an hour. 



There were 72 hours of bright sunshine, equal to 26 per cent, of the greatest possible 

 amount. 



There were 11 days on which no sunshine was recorded. 



March. — The early days of March were bright and warm, with a 

 fresh westerly wind ; but colder weather soon set in, and some rather 

 low night temperatures were recorded by the thermometer on the 

 grass, whilst during the day the highest readings of the thermometer 

 in the screen were seldom above 45°. Throughout the latter half of 

 the month there was a keen north-easterly wind, and the days were 

 cool, but this was to a great extent compensated for by relatively 

 warm nights, so that the mean temperature for the month was nearly 

 normal. Over south-eastern England the amount of bright sunshine 

 was small, but in the western, and especially the north-western, 

 parts of the kingdom it was much larger. The month was decidedly 

 dry, less than 2 inches of rain falling over a large part of central and 

 southern England and over eastern Scotland and eastern Ireland, and 

 less than 3 inches over the greater part of the remainder of the king- 

 dom ; very little snow fell anywhere. At Wisley a measurable amount 

 of rain fell on fourteen days, and the total fall was less than an inch 

 and a-half. 



The results from Wisley are as follows : 



Mean temperature of the air in shade 42°*2 



Highest „ „ „ 58°-8 on the 21st 



Lowest „ „ „ 29°-2 „ 8th 



Lowest „ on the grass 22°-l „ 8th 



Number of nights of ground frost 13 



4 



