316 METEOROLOGICAL REPORT, 1870, 



May. — 



A dry May and a dripping June 



Bring all things into tune. 



— Bedfordshire Proverb. 



Greenwich. — The cloudy cold harsh weather which charac- 

 terised the end of April changed on the 12th of May to very fine 

 and warm with an abundance of sunshine, and the weather con- 

 tinued very summer like until the end of the month. 



The fall of the barometer, which commenced at the end of 

 April, reached its minimum, 29*37 inches, at noon on the 1st of 

 May, and increasing values were recorded until the 8th. These 

 movements were succeeded by a decrease to 29 , 20 inches on the 

 11th, and another increase to 30-12 inches on the 18th. From 

 the 19th the mean daily values Were generally high, and with 

 the exception of the 30th and 31st, continually above the aver- 

 age. The absolute range of readings during May was 1*09 

 inches. 



The mean temperature of May was 53*4°, being 0*8° higher 

 than the average of 99 years, higher than in 1869 by 2-0°, lower 

 than in 1868 by 3*9°, and the same as the corresponding value 

 in 1867. 



The fall of rain was 0*47 inch : in 1833 it was 0-2 inch : in 

 1844 and 1848 it was 0*4 inch ; and there are no other instances 

 of less falls back to 1815. 



Wallington. — The first week was cold, with slight frosts at 

 night. After that the weather was warm and very favourable 

 to vegetation. The warmest days were the 26th and 27th, when 

 73° and 70° were marked. The lowest reading was on the 4th, 

 28°. Slight frost on six nights. 



Wylam. — A very fine month, with a good deal of wind. 



Barometer— Mean height, 29-904; highest, 30-332 on the 

 25th ; lowest, 20-070 on the 12th. 



Thermometer — Mean of daily minimum, 43-35° ; lowest, 34° 

 on the 10th. Mean of daily maximum, 61*84; highest, 74° on 

 the 30th. Mean of minimum and maximum, 52*59°. Mean of 

 wet bulb, 46-48° ; of dry bulb, 50*02°. 



