142 
Inthenext table I give tlieresults obtained from rain gauges 
of two different kinds, placed in close proximity in tlie same 
plane, and 3 feet from the ground. The one has a 10 inch 
round receiver, and the other a 5 inch square receiver. 
The large receiver had an excess over the small one in 
every month excepting April, June, July, and December ; 
but in June the rain-fall in both cases was the same. The 
total difference of the fall in the two gauges was not great, 
being less than half an inch on 48 \ inches of rain-fall. In 
comparing, however, the fall in the two gauges for an 
average of five years, a larger difference arises, being more 
than 6-10ths of an inch on an average fall of 36 inches, and 
an excess of the large gauge occurred in every month ex- 
cepting March. 
1 
Rainfall in Rainfall in 
m 
o 
From 1868 to 1872. 
w 
1872. 
inches in 
10 in. round 
Receiver 
3 ft. from 
ground. 
inches in 
5 in. square 
Receiver 
3 ft. from 
ground. 
o 
£ 
Q 
U 
Q 
‘3 
Average of 5 years 
rainfall in inches, 
in 10 in. round re- 
ceiver 3 ft. from 
ground. 
Average of 5years 
rainfall in inches, 
in 5 in. square re- 
ceiver 3 ft. from 
ground. 
Difference 
January.. 
1872. 
4-096 
1872. 
3-996 
+*100 
2-823 
2-805 
+•018 
February. 
2-849 
2-714 
— j -*135 
2-590 
2-542 
+*048 
March ... 
2-794 
2-735 
+•059 
2-233 
2-284 
-•051 
April . . . 
3-003 
3-048 
—•045 
2-490 
2-467 
[—"023 
May 
2-548 
2-484 
+•064 
1-876 
1-846 
-•030 
June 
5-395 
5-395 
5) 
2-535 
2-493 
r ’042 
July 
7-327 
7-409 
— •082 
2 618 
2-596 
r ’022 
August . . . 
2-988 
2-971 
+'017 
2-598 
2-522 
v -076 
Septembr. 
6'534 
6-363 
+•171 
4-255 
4-204 
[-*051 
October.,. 
4-404 
4-347 
+•057 
5-232 
5-191 
-•041 
Novembr. 
3-427 
3-422 
+•005 
2941 
2-580 
[-•361 1 
December 
3-051 
3-059 
—•008 
3-816 
3-806 
[-•010 
48‘416 
47-943 
+•473 
36-007 
35-336 
+•671 
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 
6 inch 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 47*943 inches, and in the 
