344 



The Ohio Naturalist. 



[Vol. Ill, No. 3, 



Ohio Naturalist 



Map I 



is.i- 



100 I2S 



/6~0 



J:'':APE '^^ 



MapN /54- 



jKNNiNns on " vSome Climatic Coiidilioiis of Ohio." 



Explanation of Maps. 



Map I. Mean .\nnual Snowfall, in inches of snow. 

 Map II. Mean Annnal Precipitation, in inches. 



The blank space denotes areas of less than 35 inches of precipitation, 

 the niedinni dotted 35 to 40 inches, and the heavy dotted over 40 

 inches. 

 I\Iap III. Average Nnniberof Days per year in which Precipitation Occnrs. 

 The blank space represents areas of less than loo days and the sncces- 

 sively darker areas respectively, 100 to 125, 125 to 150, and the 

 darkest 150 or more days. 



M.\p I\'. Average Number of Clear Days per year. 



The clear days increase from darkest area, less than 75, through the 

 .successively lighter portions u]) to 150 i)r more in the l)lank space. 



