22 



DtHDB OF ILLINOIS. 



Observations tukon at West Saleui, Eilwanls Co., UlinoiB, (lat. 

 38"' 30', lonf,'. SS ), for 1 years, f;ive almost exactly the same total 

 precipitation for the year as that which, according to the above 

 table, has been ascertained for Cairo, the difference amounting to 

 only .(>0 of an inch. The monthly means are considerably dif- 

 ferent, however, as the following will show. In this tabic are also 

 included the results of observations at New Harmony, Posey Co., 

 Indiana, (lat. 38" .08', long. 87^ 50'), for 12 years — both being com- 

 piled from the Smithsonian tables of precipitation, above referred 

 to:— 



The rainfall is apportioned to the different seasons, as follows:- 



The maximum and minimum mean annual rainfalls, during the 

 years of observation, at the above mentioned localities was as follows : 



West Salem.— Maximum (1858) 51 .00 inches. 



Minimum (1859) 41 02 



New Harmony. — Maximum (1855) 48.11 " 



Minimum (185(.)) 23.18 " 



Meteorological observations have been taken regularly at Mount 

 Carmel during the past few years by Mr. James Pool, recently ap- 

 pointed U. S. Signal Observer, who lias kuully favored me with the 

 following data: 



Mean monthly temperature and total precipitation, for the year 

 187G. (Three obervations daily, viz., at 7 A. M., 2 P. M., and 9 

 P. M., local time.) 



