159 
PHYSICAL AND MATHEMATICAL SECTION. 
March 2nd, 1869. 
J. B. Dancer, F.R.A.S., Vice-President of the Section, 
in the Chair. 
On the Rainfall of 1868, at Old Trafford, Manchester,” by 
G. V. Vernon, F.RA.S., F.M.S. 
The rainfall of 1868 was 3T78in. below the average of the 
last seventy-five years, and 0’824in. below the fall of 1867. 
Rain fell upon 188 days in 1868, exactly the same num- 
ber of days as in 1867, but somewhat differently distributed. 
During the first and last quarters of 1868 rain fell upon 
more days than in 1867 ; 34 days in excess in 1868. In 
the two middle quarters of the year rain fell upon 34 less 
days than in 1867 — a rather curious coincidence. 
Up to and including April there was no marked de- 
ficiency of rainfall ; but during the months of May, June, 
July, August, and September, the fall was always below the 
average ; the month of October was in excess, November 
slightly below the average, and December a most excessive 
fall, and one not reached here since 1792, when the fall for 
the month given by Mr. Walker seems to have reached 
9*5Q0in. With the exception just named I have been 
unable to find any December with so large a fall. The rain- 
fall in 1826, often referred to as a dry year, was as follows : 
1826. 
Fall in inches. 
January 
0*755 
February 
3-190 
March 
............. 1-280 
April 
2-095 
May 
0-385 
June 
0-200 
July 
3-000 
August 
2-460 
September 
2-795 
October 
3-960 
November 
1-630 
December 
3-160 
24*910 
