5°S 
TRANS. ST. LOUIS ACAD. SCIENCE. 
1836-1882 
Mean Values for each 
Extrer 
ne Maxima am 
on each Day < 
d Minima observed 
3f the Year. 
Sup- 
posed 
Min. 
Max. 
Mean. 
Min. 
Year. 
Max. 
Year. 
Mean 
Dec. 7 
"28.00* 
1(K23 
34.11 
—11.0 
1882 
63.0 
1851 
34.0 
8 
27.79 
39.11 
33.49 
— 4.0 
“ 
65!o 
1861 
33.5 
9 
25.07 
35.35 
30.21 
— 5.0 
1876 
74.5 
33.0 
10 
23.89 
36.06 
29.97 
0.0 
1868 
68.0 
u 
32.5 
11 
28.19 
26.59 
37.61 
37.67 
32.90 
32.13 
—11.0 
— 6.2 
“ 
67*7 
1873 
40 05 
bo 
12 
25.54 
37.15 
31.34 
— 0.5 
1868 
68.5 
1877 
31.8 
13 
26.25 
36.70 
31.47 
4.0 
1865 
62.5 
1881 
31.6 
14 
23.46 
33.79 
28.62 
— 1.0 
n 
59.0 
1861 
31.4 
15 
23.57 
33.46 
28.51 
— 2.5 
1851 
67.5 
1877 
31.2 
16 
24.29 
24.62 
34.83 
35.18 
29.56 
— 0.5 
— 0.1 
“ 
62.0 
63.9 
ft “ ' 
31.0 
31.4 
17 
25.10 
36.91 
31.00 
— 2.5 
1875 
67.0 
1877 
31.0 
18 
25.76 
38.87 
32.31 
1.0 
1876 
69.0 
30.8 
19 
26.37 
38 10 
32.23 
0.5 
1863 
67.5 
30.6 
20 
23.51 
35.84 
29.67 
— 2.0 
1871 
65.0 
u 
30.4 
21 
24.84 
25.11 
36.97 
37.34 
30.90 
— 2.0 
— 1.0 
1865 
66.9 
30*5 
22 
22.64 
33.86 
28.25 
—14.0 
1872 
62.0 
1877 
30.9 
28 
22.51 
35.34 
28.92 
— 7.0 
1870 
61.0 
1875 
30.2 
24 
23.90 
36.62 
30.26 
—19.5 
1872 
66.0 
• t< 
30.5 
25 
25.42 
37.95 
31.68 
—11.0 
“ 
70.0 
1867 
31.9 
26 
25.63 
24.02 
38.06 
36.36 
31.84 
30.19 
— 5.0 
-11.3 
65.0 
64.8 
1875 
31.2 
30.6 
27 
26.47 
38.41 
32.44 
— 6.0 
1872 
65.0 
1846 
31.3 
28 
26.34 
37.80 
32.07 
— 6.0 
1880 
59.0 
1862 
31.5 
29 
25.83 
37.49 
31.66 
—18.0 
“ 
64.0 
1851 
31.5 
30 
23.26 
36.73 
29.99 
— 8.0 
u 
66.0 
1875 
31.5 
31 
24.25 
25.28 
38.43 
37.77 
31.34 
31.50 
—10.5 
— 9.7 
1863 
73.5 
65.5 
31.5 
31.5 
The annexed diagram, for the construction of which I am in¬ 
debted to Dr. G. Hambach, represents the principal results of 
these tables. The perpendicular lines divide the year into 73 
periods of 5 days each, while the horizontal ones mark the de¬ 
grees. The central full-faced curve indicates the Mean Tempera¬ 
ture of the penthemeral periods of the 47 years, as actually found, 
while the dotted line represents the supposed real Mean Temper¬ 
ature as suggested in the last column of these tables. The upper¬ 
most curve shows the Highest Temperatures and the lowest curve 
the Lowest Temperatures observed in those same penthemeral 
periods within the s ime number of years. It will be noticed that 
while the points of Mean Temperature occupy the centre of each 
period, the Maxima and Minima do not show in the.middle of the 
spaces, but on that one of the 5 days of the period on which they 
actually did occur. 
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