3 88 
The Ohio Naturalist. 
[Vol. XII, No. 1, 
bearing of this excess on our studies of vegetation will be seen 
later. It is remarkable that, though the month of August showed 
numerous heavy storms in southern Ohio and the northern half 
of Kentucky, with rainfalls of more than 3 inches in twenty-four 
hours, and in two instances more than 4 inches, the station at 
Cincinnati showed a record below normal. In spite of this 
record, August, 1909, was a very wet month over the portions of 
Ohio and Kentucky named. 
The year 1908 was regarded a very dry one for Ohio generally 
and the following year a wet one. In order that the conditions 
endured by vegetation in southwestern Ohio may be compared 
with the average conditions endured over the state, the precip- 
itation records for the two years are given below: 
Precipitation Records for Ohio in 1908 and 1909. 
1908 1909 
January. 
. 1.82 inches 
3.24 inches 
February 
4.10 “ 
5.39 “ 
March 
2.43 “ 
2.77 “ 
April . 
3.69 “ 
4.13 “ 
May 
4.72 “ 
4.72 “ 
June 
. . 2.52 “ 
5.86 “ 
July 
4.08 “ 
3.90 “ 
August 
2.59 “ 
3.68 “ 
September 
0.58 “ 
1.56 “ 
October 
1.17 “ 
2.46 “ 
November 
1 .06 “ 
1.93 “ 
December 
2.33 “ 
2.68 “ 
Totals 
31.09 “ 
42.32 “ 
The mean annual precipitation for the state for twenty-seven 
years, according to the meteorological summaries published by 
the Experimental Station at Wooster is 37.50 inches. This 
makes 1909 little less above the average for total precipitation 
than was 1908 below, the deficiency for the latter year being 0.49 
inches. This deficiency is to be compared with one of 10 to 12 
inches or more endured by vegetation in southwestern Ohio 
in 1908. 
The monthly mean temperatures for 1908 and 1909 are as 
follows in degrees Fahrenheit: 
1908 1909 
January 
32.2 degrees 
February 
26.6 
u 
34.7 “ 
March 
45.5 
a 
37.3 “ 
April 
a 
49.1 “ 
May 
62.2 
u 
58.7 “ 
June 
69.2 
70.1 “ 
July 
73.9 
66.4 “ 
August 
71.2 
72.1 “ 
September 
68.0 
63.7 “ 
October 
54.1 
49.2 “ 
November 
41.7 
a 
40.4 “ 
December 
33.1 
a 
26.1 “ 
Year 
52.1 
u 
50.7 “ 
