168 
of the amounts of rain and the number of days I have given 
stand thus, 24-58 : 47'52 :: 189; : 366, so that if the number 
of rainy days at Thelwall in 1872 had any proportion with 
the rainfall it would have rained there on every day in the 
year instead of on only 233 days. 
Seeing that some information might be derived from a 
similar consideration of all the years of rainfall I had regis- 
tered at Eccles, I have made the requisite comparisons and 
beg now to submit the results to the section. 
In the following table I present the rainfall at Eccles for 
the last thirteen years, in the order of the amount of fall in 
inches, together with the number of days in each year on 
which rain fell. 
RAINFALL AT ECCLES. 
Amount of 
Number of 
Year. 
Fall 
Days of 
in inches. 
Rainfall. 
1865 
27*809 .... 
.... 177 
1870 
30*404 .... 
178 
1864 
30*874 
180 
1873 
31*127 
219 
1868 
32*922 .... 
208 
1871 
33*161 
192 
1861 
33*674 .... 
202 
1867 
... 35*515 
211 
1869 
35*701 
210 
1863 
36*216 
221 
1862 37-664 225 
1866 43*076 232 
1872 48-416 264 
Mean 35*119 209 
Now, if the extremes of rainfall and number of days on 
which rain fell, as shown in this table, be placed in com- 
parison, their ratios will stand thus : 
27-809: 48-416:: 177: 308. 
Now the numbers of days on which rain fell, in 1872 
was only 264; whereas, if this number had been in propor- 
to the rainfall, it should have been 308. 
From the foregoing table I have deduced by means of the 
average amount of rainfall, and the average number of days 
on which rain fell, the ratios of the rainfall of each of the 
last 13 years, and placed each ratio opposite the ratio of 
