388 The Ohio Naturalist. [Vol. XII, No. 1, 



bearing of this excess on our stvidies 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 nornial. 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 eor Ohio in 190S and 1909. 



1908 1909 



January 1.S2 inches 3.24 inches 



February 4.10 " 5.39 " 



March 2.43 " 2.77 " 



April 3.09 " 4.13 " 



May 4.72 " 4.72 " 



June 2.52 " 5.86 " 



Julv 4.08 " 3.90 " 



August 2.59 " 3.68 " 



vSeptember 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 37.56 inches. This 

 makes 1909 little less above the average for total precipitation 

 than was 190S below, the deficiency for the latter year being 6.49 

 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 29.1 degrees 32.2 degrees 



FebruaVy 26.6 " 34.7 " 



March 45.5 " 37.3 " 



April 51.7 " 49.1 " 



May 62.2 " 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 " 40.4 " 



December 33.1 " 26.1 " 



Year 52.1 " 50.7 " 



