mo*i 
WISLIZENUS—ATMO SPHERIC ELECTRICITY. 
Additional BemarJcs on Atmospheric Electricity. 
By A. Wislizenus, M.D. 
The delay in the publication of this volume enables me to 
add to my observations of atmospheric electricity in 1861, 
the result of my observations in 1862. t The latter observa¬ 
tions have been made in the same manner and by means of 
the same fine glass thread, which, after many thousand tor¬ 
sions, proves as good as ever. I present herewith in tabular 
form the general rbsult of my observations in 1861 and 1862. 
I. Monthly mean of Positive Atmospheric Electricity in 1861 and 
1862, at St. Louis, Mo., based upon daily observations at 6, 9, 12, 
3, 6 and 9 o’clock, from morning till night. 
1861^.16.5 12.1 9.8 8.8 7.8 4,0 3.7 3.4 3.0 7.1 10.0 14.3 8.4 
1862.. .12.1 16.0 9.4 10.6 7.5 3.0 2.2 2.3 3.0 7.7 12.6 13.9 8.4 
II. Monthly mean of Temperature and of Relative Humidity in 
1861 and 1862, at St. Louis, Mo., based upon daily observations,, 
cotemporaneous with those of Atmospheric Electricity . 
Ja n. Feb. Mar. Ap’l. May. Sept. Oct. Nov. Dec. ^ 
1861.. .32.2 40.4 44.8 58.1 64.1 76.9 77,5 78.6 69.1 57.9 46.0.39.7 57.1°f. 
1862.. .28.9 30.2 43.2 55.0 69.7 75.1 81.2 80.7 72.1 57.3 42.6 41.3 56.4 q f. 
Jan . Feb. Ma, Ap, Ma” Sept. Oct. Nov. Dec. 
1861.. 72.2 63.3 64.5 61.5 66.3 70.8 66.3 69.6 77.3 76.6 69.0 74.3 69.5 
1862.. .85.3 73.9 70.8 67.0 57.3 67.0 66.8 64.3 74.2 67.2 69.5 74.6 69.8 
III. Yearly mean of Positive Electricity of Temperature, and of 
Relative Humidity of the Atmosphere, at the hours o/6, 9, 12, 3, 
6 and 9, from morning till night , based upon daily observations at 
these Iwurs through the years 1861 and 1862, at St. Louis, Mo. 
At 6 A.M. At 9 A. M. At 12 M. At3P.M. At6P.M. At9P.M. 
1861 ...... 8.6 *. iO.O 9.2 7.9 8.7 . 6.9 
1862 . 8.9 . 10.0 9.1 7.3 8.1 ...... 6.8 
1861 .48.9 Q F... 54.9 . 61.6 63.6 59.3 . 54.3 
1862 .48.9 55.0 60.9 62.3 ...... 58.0 ...... 53.6 
1861 . 86.4 . 71.3 60.3 ...... 57.2 . 65.1 . 77.3 
1862 . 85.3 . 70.6 60.0 57.5 67.6 . 78.0 
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