112 
tinue to show that the day fall exceeds the night fall so far 
as the whole year is concerned. In the first three months 
of the year the night fall exceeds the day fall. Then there 
is the reverse of this from April to July or August, and 
September and December again show excesses for the night. 
Average of Ten Years, from 1867 to 1877. 
1877. 
Rainfall in 
inches from 
8 a.m, to 8 p.m. 
Rainfall in 
inches from 
8 p.m. to 8 a.m. 
Difference 
between night 
and day fall. 
January 
1-486 
1-742 
+0-256 
February 
1-023 
1-351 
+0-328 
March 
1-190 
1-198 
+0-008 
April 
1-150 
0833 
—0-317 
May 
1-159 
0-838 
—0-321 
June 
1-510 
1-015 
—0-495 
July 
1-782 
1-595 
—0-187 
August 
1-772 
1-760 
—0-012 
September 
1-756 
2073 
+0-317 
October 
2-378 
2-296 
—0-082 
November 
1-785 
1-723 
—0-062 
December 
1-423 
1-919 
+0-496 
18*414 
18-343 
—0071 
Errata . 
2 P 
Page 96 — line 3 —for Q 3 = ^Pi read Q 3 = -^ 
„ line 6 — -for 2Cu.(N0 3 ) 2 + 2N 2 0 2 read 30u(ND 3 ) 2 4- N 2 0 2 
