110 



What would have occurred if the rainfall in July had been 

 like that of 1828, ll'480in., or 3-822in. in excess of what 

 fell in July, 1872 ? 



Rain fell on 40 days in excess of the average of the last 

 10 years (Proceedings, vol. 11, p. 184); rain fell upon the 

 greatest number of days in January, June, September, and 

 October, and upon the least in April. 



Whatever was the disturbing cause which produced the 

 excessive rainfall, examination of the excess of each quar- 

 terly period shows that it went on increasing until Septem- 

 ber, and then apparently declined to the end of the year, the 

 excess in question being — March quarter, 2*808in.; June 

 quarter, 4*794in. ; September quarter, 7'104in. ; and drop- 

 ping down in the December quarter to 0"l77in. only. 



As regards the temperature of the year, it was above the 

 average in every quarter, Greenwich giving 



March'quarter + 5 "0° n . ^ 



-^ /^ ^o J 11^ excesss oi 



June quarter + 0"5 / ^, 



^ , -, ro vthe average 



September quarter .. . +1'0 ( „,^t 



-r^ 1 ^ ^„ I of 101 years; 



December quarter ... +1-7 ) 



so that in the case of last year a high temperature has 

 accompanied the excessive rainfall. 



Old Trafford, Manchester. 

 Kain Guage 3 feet above the ground, and 106 feet above sea level. 



Quarterly 

 Periods. 



1872. 



1871. 



1872. 



Days Days 



38 56-! 



44 50 



62 



48 



182 228 



January . . 

 February.., 



March 



Apiil , 



IMay , 



June , 



July 



August 



September 

 October . 

 November. 

 December. 



Differ- 

 ence. 



No. of 

 Days 

 Rain 



feUin 



1872. 



Quarterly Periods. 



79 Years 



In. 



+1-718 

 +0-609 

 +0-481 

 + 0-913 

 -0-150 

 +4-037 

 +4-101 

 -0-717 

 + 3-720 

 +0-513 

 -0-014 

 -0-326 



+14-883 



18 

 16 

 9 

 17 

 24 

 17 

 19 

 23 

 22 

 21 

 20 



228 



In. 



1" 



240 



7-226 



10-376 



10-967 



35-809 



1872. 



In. 



10-048 



12-020 

 17*480 

 11-144 

 60-692 



Differ- 

 ence. 



In. 



+2-808 



+4-794 

 +7-104 



+0-177 

 +14-883 



