WISLIZEN0S — ATMO SPHERIC ELECTRICITY . 
115 
USA 
Additional Remarks on Atmospheric Electricity. 
By A. Wislizencs, M.D. 
The delay in the publication of this volume enables me to 
add to my observations of atmospheric electricity in 18bl, 
the result of my observations in 1862. 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 result of my observations in 18bl and 1802. 
I. Monthly mean of Positive Atmospheric Electricity m 1861 and 
18* *62, at St. Louis , Mo., based upon daily observations at 6, 9, 12, 
3, 6 and 9 o’clock , from morning till night. Mean 
Jan. Feb. Mar. Ap’l. May. Jun. Jul. Aug. Sept. Oct. Nov. Dec. Year. 
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 
* This table of 1861 differs in 
gram No. 1. Having discovered 
and give now the present 
decimals from that published on page 66 
ereu buuic errors, I calculated all my observations 
the corrected table. 
II. Monthly mean of Temperature and of Relative Humidity in 
1861 and 1852, at St. Louis , Mo ., based upon dciily observations , 
cotemporaneous with those of Atmospheric Electricity • 
_ 
Jan. Feb. Mar. Ap’l. May. Jun. Jul. Aug. Sept. Oct.* Nov. Dec. Year. 
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 
RELATIVE HUMIDITY. 
Jan. Feb. Mar. Ap’l. May. 
1861.. . 72.2 63.3 64.5 61.5 66.3 70.8 66.3 69.6 77.3 76.6 
1862.. .85.3 73.9 70.8 67.0 57.3 67.0 66.8 64.3 74.2 67.2 1 
42.6 41.3 56.4° f . 
III. Yearly mean of Positive Electricity of Temperature, and of 
Relative Humidity of the Atmosphere, at the hours oj 6, 9, 12, 6, 
• 7 * 1 J - m daily observations at 
2, at St. Louis , Mo. 
6 and 9, from morning till night, based 
these hours through the years 1861 and 
ELECTRICITY. 
At 6 A. M. At 9 A. M. At 12 M. At3P.Y 
10.0 9.2 7.9 
10.0 9.1 7.3 
At 6 P.M. At 9 P.] 
1861 
1862 
1861 . 
1862. 
1861 . 
1862 , 
54.9 
55.0 
TEMPERATURE. 
.... 61.6 .... 
63.6 
62.3 
RELATIVE HUMIDITY. 
...... 60.3 57.2 
59.3 
58.0 
54.3 
53.6 
77.3 
78.0 
: r k 
& 
7 8 9 10 Missouri 
. . Botanical 
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