12G 
In the next table I give the results obtained from two 
exactly similar gauges, placed at different heights from the 
ground, and free from every interference. Each gauge has 
a 5in. square receiver, and the one is placed 3 feet and the 
other 34 feet above the ground. The total fall in the one 
3 feet from the ground was 3G‘048 inches, and in the one 
34 feet from the ground it was 2 8 '2 01 inches for last year. 
The difference between the fall in the two gauges is 7'847 
inches, or about 22 per cent less rain fell in the higher than 
in the lower gauge. In the same table I give the average 
fall in the same gauges for seven years, and by comparing 
the results it will be found that the average difference be- 
tween the fall in the two gauges is about 18 per cent. 
l 
I 
1874. 
1 
Rainfall in 
inches in 
5 in. sqnai’e 
receiver 3 ft. 
from ground. 
1871. 
Rainfall in 
inches in 
in. square 
receiver 31ft. 
from groimd. 
1871. 
From 186J 
Average fall of | 
rain in inches i 
for 7 years in 
5 in. square 
receiver 3 ft. 
from ground. 
5 to 1871. 
Average fall of 
rain in inches 
for 7 years in 
5 in. square 
receiver 31ft. 
from ground. 
January 
3-219 
2-339 
3-011 
2-160 
February 
1-440 
1-170 
2-099 
1-586 
March 
3-011 
2-301 
2-441 
1-911 1 
April 
0-863 
0-672 
1-977 
1-689 ! 
May 
1-913 
1-849 
1-876 
1-704 
June 
0-872 
0-699 
2-317 
2-062 
July 
2-096 
1-823 
2-776 
2-463 
August 
5-971 
4-758 
3-251 
. 2-718 
September 
3-538 
2-773 
3-821 
3-243 
October 
4-192 
3-264 
4-968 
4-090 
November 
5-225 
1 4-248 
3-190 
1 2-473 
December 
1 3-708 
2-305 
! 3-350 
! 
2-695 
1 36-048 
1 
28-201 
35-077 
28-794 
The following table gives the ratios of the excesses of 
rainfall at 3 feet from the ground over the amount measured 
at 34 feet from the ground. I produced this kind of table 
for the first time last session, and I then showed that these 
ratios for the rainfall of 1873, and for the average of six 
years, were almost identical. The last year presents a very 
different result. Not only is the ratio of each month very 
divergent from the average, but the ratios of the totals are 
very different. I must, however, observe that both the 
