126 
least from the beginning of April till the end of June. The 
wettest season sets in in September. 
The next table shows the monthly amounts that fell in 
each gauge, together with the number of miles of horizontal 
movement of the air. 
1869. 
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 the 
Horizontal 
Movement 
of the Air in 
Miles. 
January 
2-491 
2-538 
1-762 
4-996 
February 
3-997 
3-971 
2-884 
5-920 
March. 
1-400 
1-365 
1-035 
4-735 
April 
2-292 
2-257 
1-842 
2-861 
May 
2-974 
2-920 
2-888 
2-848 
June 
1-258 
1-222 
1-045 
1-410 
July 
1-122 
1-086 
0-838 
1-355 
An crust 
3-115 
3-106 
2533 
2-021 
September 
6-195 
6-218 
5-039 
3-516 
October 
3-129 
3-073 
2-610 
3-644 
November .. ... 
4-285 
4-209 
3-389 
3145 
December 
3-443 
3-441 
2-755 
3156 
Totals 
35-701 
35-406 
28-620 
39-607 
This table, like previous ones I have read to this Section, 
shows that the greatest horizontal movement of the air 
happens in the winter months, or from about September to 
March. And as may be expected, the maxima occur at or 
about the time of the equinoxes. It likewise shows that an 
excess of windy weather is attended with an excess of rain- 
fall. I would also draw attention to the close similarity of 
amount of rainfall measured by the lOin. round, and the 
5in. square gauge. The small difference is almost identical 
with those of previous years. 
In the next table I have given the average daily fall of 
rain in each kind of gauge, and the ratio of amounts, 
when the velocity of the wind has ranged between the 
number of miles indicated in the first column. 
