ast and
northeast winds.

Dr. Drake has given a table, setting forth the results of 4268
observations on the state of the weather at Cincinnati, from which it
will be perceived that of the 365 days in a year, about 176 will be
fair, 105 cloudy, and 84 variable.

Dr. L. C. Beck made similar observations at St. Louis during the year
1820, which produced the result of 245 clear days, and cloudy, including
variable days, 110.

Years. |Clear days.|Cloudy days.|Variable days.
==============+===========+============+==============
1 | 180 | 107 | 68
2 | 158 | 112 | 91
3 | 187 | 78 | 85
4 | 152 | 106 | 107
5 | 185 | 111 | 68
6 | 172 | 112 | 74
--------------+-----------+------------+--------------
Total 6 years.| 1,034 | 626 | 493
--------------+-----------+------------+--------------
Mean terms. | 172.33 | 104.33 | 82.16

The following table shows the condition of the weather in each month of
a mean year, for the above period.

MONTHS. | Clear days. | Cloudy days. | Variable days.
==========+=============+==============+================
January | 9.8 | 13.1 | 7.8
February | 10.3 | 12.0 | 6.5
March | 13.5 | 9.1 | 8.3
April | 13.1 | 10.8 | 7.6
May | 15.0 | 8.5 | 7.5
June | 15.5 | 5.0 | 9.6
July | 19.0 | 5.5 | 6.0
August | 19.6 | 4.6 | 6.5
September | 19.5 | 5.3 | 6.1
October | 16.1 | 6.0 | 8.1
November | 9.5 | 13.5 | 5.5
December | 9.6 | 14.1 | 5.8

There would be some variations from the foregoing table in a series of
observations in the country bordering upon the Upper Mississippi and
Missouri. The weather in the states of Ohio and Kentucky, is doubtless
more or less affected in autumn by the rains that fall on the Alleghany
mountains, and the rise of the Ohio and its tributaries. So the weather
in the months of April, May and June in Missouri, is affected by the
spring floods of the Missouri and Mississippi rivers.

The following table is constructed from a series of observatio