Missouri Botanical Garden

PETER H. RAVEN LIBRARY

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270

SCIENTIFIC department.

The state of health of the city improved considerably during the
same period ; and though exanthematic diseases continued to prevail
to a certain 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 towa-d the latter part of May.

ATMOSPHERIC ELECTRICITY, TEMPERATURE AND
HUMIDITY.

Observations made at St. Louis ^ Missouri, based upon daily observa-
tions at 6, 9, 12, 3, 6 and 9 o'clocJc, from morning till night. By
A. WiSLizENus, M. D., St. Louis, Mo.

I. — Monthly Mean of Positive Atmospheric Electricity,
MARCH.

YEAR.

6 A.M.

MO^TH

PBEVAILIlfa WIHDi.

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 i

W. SE. <fe 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. (fe 8.

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

s. & w.

1862..

10.7

13.7

10.6

9.1

9.4

10.1

10.6

6

SE. 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

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Missouri bot'inicai.
George engeuhann

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M. W. ALEXANDER,

SOUTH-EAST CORNER OF FOURTH AND MARKET STREETS,

ST. LOUIS.

303^

WISSOURI BOTANICM.
GEORGE ENGELMANN

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