Nov., 1911.] Climatic Conditions and Plant Growth. 
387 
It is unfortunate that no record of precipitation of moisture is 
kept nearer Oxford than Cincinnati, 30 miles distant. However, 
the figures kept there are valuable for our purpose and are given 
below : 
The Record of Precipiattion at Cincinnati for 1908. 
January 
1.40 inches. 
Relation to normal precipitation 
— 2.0 inches, 
February 
4.50 “ 
tt 
“ “ “ 
+ 1.2 
March 
3.66 “ 
tt 
tt tt tt 
0.0 
it 
April 
4.07 “ 
“ 
a tt it 
+ 1.1 
“ 
May 
5.84 “ 
“ 
tt u a 
+2.3 
tt 
June 
2.00 “ 
“ 
“ “ “ 
—2.0 
ti 
July 
0.83 “ 
it 
tt tt tt 
—2.7 
a 
August 
1.69 “ 
tt 
tt tt tt 
—1.6 
tt 
September 0.26 “ 
tt 
it tt tt 
—2.0 
tt 
October 
0.35 “ 
“ 
tt tt u 
—2.1 
it 
November 
1.09 “ 
tt 
u it tt 
—2.1 
tt 
December 
1.60 “ 
u 
tt it u 
—1.3 
tt 
Total 
27.29 inches. 
Deficiency for the year, 
11.13 inches. 
Cincinnati does not fall within the area given by the govern- 
ment reports as having a deficiency as high as 10 inches for the 
year; but the precipitation for the year was only 27.29 inches, 
which is, according to the figures of the government observations, 
11.13 inches below the normal 3S.42 inches for the station at 
Cincinnati. The record of precipitation at Cincinnati for May 
very probably exceeds ours, and our deficiency for the year was 
almost certainly not less than 14 inches. Taking into account our 
lack of rain in May and the table for Cincinnati, which shows a 
deficiency of 13.80 inches for the last seven months of the year, it 
will be seen that our deficiency for the last eight months of the 
year was probably more than 16 inches. 
We shall want to compare climatic and vegetation conditions 
for 1908 with those obtaining in 1909, and the precipitation 
record for Cincinnati for 1909 is given below to be used in these 
comparisons : 
The Record of Precipitation at Cincinnati for 1909. 
January 
F ebruary 
March 
April 
May 
June 
July 
August 
Septembe 
October 
November 
December 
Total 
2.50 inches. 
Relation to normal precipitation 
— 0.8 inches. 
5.65 “ 
It 
tt 
tt tt 
+2.4 
it 
2.44 “ 
tt 
it 
tt tt 
—1.2 
ti 
3.62 “ 
it 
“ 
U tt 
+0.7 
“ 
4.21 “ 
tt 
it 
tt tt 
+0.7 
U 
6.05 “ 
it 
tt 
tt tt 
+2.1 
«. 
3.83 “ 
tt . 
“ 
tt tt 
+0.3 
tt- 
1.82 “ 
ti 
tt 
tt tt 
—1.5 
tt. 
- 1.30 “ 
“ 
tt 
u “ 
—0.9 
it- 
3.20 “ 
tt 
“ 
it u 
+0.7 
it. 
■ 1.42 “ 
tt 
tt 
tt tt 
—1.8 
tc 
2.40 “ 
“ 
“ 
tt ti 
—0.5 
(C 
38.44 inches. 
Excess for the year 
0.02 inches. 
The figures for 1909 show the year to have been about normal 
for total precipitation, but to have had an excess of 4.4 inches 
for the four growing months, April, May, June and July. The 
