270 
SCIENTIFIC DEPAETMENT. 
The state of health of the city improved considerably during the 
same period ; and though exan thematic diseases continued to' prevail 
to a certaia extent, we entered with the month of April into the 
most healthy season, which is likely to continue until the hot 
summer weather begins to exhibit its trying effects on the inhabit- 
tants, which we may expect toward the latter part of May. 
ATMOSPHERIC ELECTRICITY, TEMPERATURE AND 
HUMIDITY. 
Observation f made at St. Louis, Missouri, based upon daily observa- 
tions at 6, 9, 12, 3, 6 and 9 o'clock, from morning till night. By 
A. WiSLizENus, M. D., St. Louis, Mo. 
I. — Monthly Mean of Positive Atmospheric Electricity. 
MARCH. 
TEAR. 
6 A.M. 
OF 
SStf 
PREVAILING WINDg. 
1861.. 
12.0 
12.0 
9.8 
8.1 
9.0 
8.0 
9.8 
3 
W. & SE. 
1862.. 
11.8 
12.8 
9.4 
8.4 
7.0 
6.8 
9.4 
4 
W. SE. & NW. 
1863.. 
15.8 
15.5 
16.5 
10.4 
11.1 
12.3 
13.6 
2 
NW. W. NE. SE. 
1864.. 
14.2 
13.7 
11.6 
6.8 
8.3 
11.1 
11.0 
1 
SE. 
1865.. 
8.5 
9.7 
6.3 
4.4 
3.2 
3.0 
5.9 
4 
SE. W. S. 
Mean.. 
12.5 
12.7 
10.7 
7.6 
7.7 
8.2 
9.9 
APRIL. 
1861.. 
10.8 
11.1 
7.1 
7.0 
7.7 
9.3 
8.8 
2 
8. W. 
1862.. 
10.7 
13.7 
10.6 
9.1 
9.4 
10.1 
10.6 
6 
SB. NW. & NE. 
1863.. 
10.0 
9.9 
10.0 
6.2 
8.0 
8.6 
8.8 
2 
SE. & NW. 
1864.. 
9.1 
11.6 
6.8 
7.5 
7.8 
8.0 
8:5 
3 
NW. & SE. 
1865.. 
3.8 
4.8 
2.7 
3.3 
2,7 
2.6 
3.3 
4 
W. SE. 
Mean . 
8.9 
10.2 
7.4 
6.6 
7.1 
7.7 
8.0 
