436 Reduction of Meteorological Tables in the Doah. 



The proportion of days with rain to those without rain, is as 1 to 

 9, and the North Westerly winds appear to have prevailed to an 

 unusually large extent. 



TABLE X. 



Shewing Pluviometric Results and Variations of Wind and Weather 

 during the year 1840. 



1 



2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 

 10 

 II 

 12 



Months. 



January, 

 February, 

 March, . . 

 April, .. 

 May, . . 

 J une, . . 

 July, 

 August, 

 September, 

 October, 

 November, 

 December, 



Sums. 



Means. . 



Pluvio • 

 meter. 



3.20 

 0.0 

 .15 

 0.0 

 .35 

 6.045 

 15.225 

 4.42 

 2.55 

 0.0 

 0.0 

 0.0 



31.94 



2.661 



Weather. 



Direction of Winds. 



Rainy 

 Days. 



4 

 0 

 1 

 0 

 1 

 6 

 11 

 9 

 3 

 0 

 0 

 0 



35 



Not 

 Rainy 

 Days. 



2.91 27.58 



27 

 29 

 SO 

 30 

 30 

 24 

 20 

 22 



27 

 31 



30 

 31 



331 



0 1 9 



0 0 0 



0! 0 



0 0 



Oj 4 

 0 8 



0 16 



6 

 20 



9 

 20 



4 



3 



9 

 16 



6 

 24 

 14 



7 



40 138 



^2 



0 0 0 0 0 0 



c/2 m 



89 61 



3 

 3 

 2 

 0 

 0 

 2 

 3 

 4 

 1 

 0 

 0 

 0 



18 



0 0 



The following are the proportions of the prevailing winds during 

 the year 1840, and from the Table it will be observed, that there is no 

 instance of Northerly wind throughout the twelve months. 



1. 



Southerly winds are to Westerly 



as 



1 



to 



8 



2, 



Easterly ditto, 



as 



1 



to 



3 



3. 





as 



1 



to 



34 



4. 





as 



1 



to 



H 



5. 





as 



1 



to 



2 



6. 





as 



1 



to 



7 



