o3 
' TABLE II. 
Extremes and Means of Monthly and Annual Rainfall at Clifton, 
1853—1872. 
n 
Least Fall 
Greatest 
Fall 
Mean of 
1st 10 VMVQ 
lot 11/ yvino 
!" 
Mean of 
"Jnd 10 ¥, n nr« 
Mean of tlie j 
Inches 
Inches 
Inches 
Inches 
Inches 
jj January ... 
1 February ... 
0-311 
6-416 
2-505 
4*078 
3-291 
0-413 
4801 
1-360 
2*608 
1-984 j 
j March 
0-544 
4-865 
2-262 
1*983 
2-123 | 
i Anvil 
0'022 
3*759 
2*109 
1*962 
2*035 
0-865 
6-304 
2-628 
2*221 
2-424 , 1 
I June 
0-619 
7-104 
3*197 
2*119 
2-658 ! 
| Jul y 
0-509 
5-114 
2-984 
2*328 
2-656 ; 
8 August 
1 September... 
1-121 
8-508 
3*298 
3*201 
3-250 | 
'0-022 
7-404 
2*885 
3*369 
3-127 f 
1 October 
1-895 
6-060 
3*526 
3-471 
3-499 
| November... 
0-541 
4-860 
2-157 
2-546 
2-351 | 
5 December ... 
§ 
0-607 
5-672 
2*109 
3-190 
2-650 | 
| Year 
22-746 
42-366 
31*020 
33-076 
32*048 
In Table I. are given the quantites of rain (including melted snow and 
hail) collected in each of the 240 months over which the observations 
extend; also the annual totals, and the monthly and annual means. It 
will be seen that the three driest years were 1854, 1864, and 1870; the 
three wettest, 1860, 1866, and 1872. The driest of all was 1864, the 
wettest of ail, 1872. In 1864 the fall was only 22*746 inches; 
in 1872 it amounted to 42*366 inches. No month was entirely with- 
out rain, but in April, 1854, and. again in September, 1365, the quantity 
barely exceeded the fiftieth of an inch. The exact amount was in each of 
those month 0 0-022 inch. The heaviest monthly falls were— in June, 1860, 
7-104 inches; in August, 1865, 8*508 inches; and in September, 1866, 7*404 
inches. The wettest month of the whole period, and one of the two driest 
months occurred consecutively. 
Table II. has bc r > e: TrHV-d partly to show the extremes in either 
direetiorc to which the ; ••£ each month is liable, and -tartly to give 
Lea of the length of time necessary. for the deduction stworthy 
.averages. For this latter purpose the period of twenty years has been 
divided into two periods of ten years each, and the monthly and annual 
averages have been calculated for each of these. In this way there comes 
