128 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Cyclonic disturbances followed' each other across the Kingdom with 

 very little intermission, bringing heavy falls of rain to many parts, and 

 especially to the northern and western districts, and as a result the 

 rainfall exceeded the average everywhere, except over the southern and 

 south-eastern parts of England. The month was also cold, and the 

 conspicuous rise of temperature which one expects to meet with in April 

 was looked for in vain. The highest readings were a little over 60°, 



Fig. 65. — Mean Temperature of the Air ; Mean Maximum and Mean Minimum 

 Temperature of the Air ; and the Mean Temperature on the Grass for 

 EACH Month. 



and were recorded generally about the 20th ; at Wisley the extreme was 

 63°. 7 on the 21st, and only on one other day did the thermometer rise 

 so high as 60°. There were several severe night frosts, the ther- 

 mometer on the grass at Wisley falling to 18° on the 3rd, and to 

 25° on the 27th. Heavy hailstorms were very general on the 16th and 

 17th. The winds were somewhat variable in direction, but, as a rule, 

 they blew from some westerly point, and occasionally they blew 

 strongly. There was a general deficiency of bright sunshine, but the 



