WISLIZENUS — ATMOSPHERIC ELECTRICITY. 



415 



III. — Yearly Mean of Positive Electricity, of Temperature, a>id of 

 Relative Humidity of the Atmosphere at the hours of 6, 9, 12, 3, 

 6 and 9, from morning till night, based upon daily observations a? 

 those hours in 1801, 1862, 1863, 1864 and 1865, at St. Louis, Mo. 



ELECTRICITY, 



TEMPERATURE. 



RELATIVE HUMIDITY. 



1861 



1852 



1863 



1864 



1865 



Mean . 



I\ T . — Direction and Frequency of Winds in 1861-65, at St. Louis, 



Mo. 



