344 
The Ohio Naturalist. 
[Vol. Ill, No. 3, 
Ohio Naturalist. 
Plate j. 
ni- 
ts: 
ta.5'' 
/r! a pE ” Map IV 7 m- 
J KNNINGS on “ Some Climatic Conditions of Ohio." 
Explanation of Maps. 
Map I. Mean Annual Snowfall, in inches of snow. 
Map II. Mean Annual Precipitation, in inches. 
The blank space denotes areas of less than 35 inches of precipitation, 
the medium dotted 35 to 40 inches, and the heavy dotted over 40 
inches. 
Map III. Average Number of Days per year in which Precipitation Occurs. 
The blank space represents areas of less than 100 da\-s and the succes- 
sively darker areas respectively, 100 to 125, 125 to 150, and the 
darkest 150 or more days. 
Map IY. Average Number of Clear Days per year. 
The clear days increase from darkest area, less than 75, through the 
successively lighter portions up to 150 or more in the blank space. 
