118 
The next table shows the monthly amounts that fell in 
each gauge, and the number of miles of horizontal move- 
ment of the air. 
1868. 
Rainfall in 
lOin. round , 
gauge, 3 feet 
from ground. 
Rainfall in 
5in. square 
gauge, 3 feet 
from ground. 
Rainfall in 
5in. square 
gauge, 34 feet 
from ground. 
Amount of 
horizontal 
movement of 
the air in 
miles. 
J anuary 
2-995 
2-987 
1-941 
5,942 
February. 
2-228 
2-149 
1-717 
6,359 
March 
3-713 
3628 
3-007 
4,754 
April 
1-472 
1-402 
1-142 
2,749 
May 
0-980 
0-919 
0-758 
2,626 
June 
0-670 
0-625 
0-506 
1,671 
July 
0-441 
0-398 
0-400 
4,157 
August 
3-129 
3-036 
2-693 
5,038 
September 
1-853 
1-824 
1-603 
4,130 
October 
4-998 
4-965 
4162 
4,335 
November 
2-719 
2-762 
2137 
4,356 
December 
7-724 
7-813 
6-460 
6,148 
32-922 
32-508 
26-526 
52,265 
This table, like the one I read to this Section of the Society 
last year, shows that the greatest horizontal movement of 
the air happens in the Winter months, or from about Sep- 
tember to March. It likewise shows, what I pointed out 
last year, that an excess of windy weather in any month is 
nearly always attended with an excess of rainfall. 
In the next table I have given the average daily fall of rain 
in each kind of gauge, and the ratio of the amounts, when 
the velocity of the wind has ranged between the number of 
miles indicated in the first column. 
Daily 
movement 
of wind. 
No. of days 
on which 
rain fell. 
3 feet from 
the ground. 
34 feet from 
the ground. 
Difference 
between 
A and b. 
Ratio 
of 
b to A. 
5 inch 
square gauge. 
A 
5 inch 
square gauge. 
B 
Miles. 
In. 
In. 
In. 
0 to 50 
14 
'114 
•106 
•008 
•929 
50 to 100 
36 
•117 
•105 
•012 
•897 
100 to 150 
44 
•126 
•105 
•021 
•833 
150 to 200 
39 
•159 
•142 
•017 
•893 
200 to 250 
36 
•184 
•147 
•037 
•798 
250 to 300 
19 
•181 
•139 
•042 
•767 
300 to 350 
9 
•212 
•161 
•051 
•759 
350 to 400 
5 
•155 
•094 
•061 
•606 
Above 400 
6 
•332 
•196 
136 
•590 
Mean 
200 to 250 
23 
•175 
132 
043 
•785 
