518 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



by keeping the grass from growing caused the pasture lands to look 

 very bare, although the land was in good condition for corn sowing. 

 The rainfall was deficient all over the kingdom, and the amount of bright 

 sunshine was generally in excess of the average, notwithstanding the fact 

 that fogs were somewhat frequently experienced. Over the South of 

 Ireland the weather was remarkably dry. 

 Observations made at Wisley : 



Mean temperature of the air in shade 37 o, 0 



Highest „ „ „ 52°-3 on the 28th 



Lowest „ „ „ ... 21°-1 „ 3rd 



Lowest ,, on the grass 13°*8 „ 3rd 



At l ft. At 2 ft. At 4 ft. 

 deep. deep. deep. 



Mean temperature of the soil at 9 a.m 36°-9 38°-7 40°-6 



Highest „ „ „ 41°-7 41°-8 41°-8 



Lowest „ „ „ 33°-8 36°-4 39°-7 



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



represented by 100) 88% 



Rain fell on 13 days to the total depth of 1-26 in. 



(Equivalent to about 6 gallons of water per square yard.) 



Heaviest fall on any day 0*37 in. on the 10th 



The prevailing winds were from the westward. 



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



There were 84-9 hours of bright sunshine, equal to 31 per cent, of the greatest 

 possible amount. There were 8 days on which no sunshine was recorded. 



March. — This was a month of generally quiet weather, the only 

 exception being a spell of rather boisterous weather lasting for a few 

 days, near the middle of the month. Early morning fogs were some- 

 what frequent, and thunderstorms were experienced in some parts of the 

 kingdom ; but the temperature was above the average for the month, and 

 bright sunshine was unusually abundant, the total for the month being 

 in some districts nearly equal to the average duration for May. At night, 

 too, the sky was usually very clear, and the strong nocturnal radiation 

 which resulted from this led to the formation of the morning mist already 

 mentioned. The amount of rainfall was below the average over the 

 southern half of the kingdom, the fall over some districts in the south 

 being less than half an inch ; but in Scotland, the North of Ireland, and 

 North-West England more than the average fell. 



Observations made at Wisley : 



Mean temperature of the air in shade 





43°-7 





Highest ,, „ „ 





G8°-2 on the 31st 



Lowest ,, ,, „ 





25°4 



„ 5th 



Lowest „ on the grass 





18°-0 



„ 12th 





At 1 ft. 



At 2 ft. 



At 4 ft. 





deep. 



deep. 



deep. 



Mean temperature of the soil at 9 a.m. 



41°-7 



42°-9 



42°-8 



Highest ,, ,, „ 



45°-9 



46°-0 



44°-5 



Lowest ,, ,, „ 



38°3 



40°-5 



41 p -4 



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



represented by 100) 80% 



Rain fell on 12 days to the total depth of 0*88 in. 



(Equivalent to about 4 gallons of water per square yard.) 

 Heaviest fall on any day 0'23 in. on the 12th 



