232 
TEMPERATURE OF SOILS 
opened by a shovel, but the earth was merely raised sufficiently to insert the instrument, 
where it remained from ten to fifteen minutes, entirely covered with earth, the air being 
shut out by pressing the earth down. 
TABLE COMPARING THE TEMPERATURE OF THE EARTH AND THE AIR. 
DAY. 
HOUR. 
AIR. 
EARTH. 
OBSERVATIONS. 
DAY. 
HOUR. 
AIR. 
EARTH. 
OBSERVATIONS. 
1844, 
APRIL. 
1844, 
MAY. 
22 
5PM 
61° 
50° 
Elm in full blossom. 
23 
7AM 
51° 
42° 
Sap ascends in the 
1 P M 
68 
52 
bark, as I have seen 
24 
8AM 
62 
50 
in 20 instances to- 
, , 
1 P M 
80 
60 
day. 
. . 
6PM 
62 
52 
23 
5PM 
65 
52 
Wind south. 
25 
8 A M 
68 
62 
24 
7AM 
50 
.. 
5PM 
70 
62 
25 
7AM 
50 
46 
26 
7AM 
70 
60 
26 
7AM 
50 
48 
Rain. 
3PM 
68 
64 
27 
7AM 
31 
40 
27 
8 A M 
68 
64 
28 
7AM 
44 
42 
Clear. 
8PM 
64 
Even’g. 
61 
42 
4 hours sun. 
28 
8 A M 
62 
62 
29. 
7AM 
44 
41 
Wind west, clear. 
30 
8 AM 
67 
56 
.30 
5 P M 
7AM 
56 
32 
46 
41 
31 
SAM 
76 
59 
1844, 
JUNE. 
1844, 
MAY. 
1 
8AM 
56 
57 
1 
7AM 
51 
46 
2 
8AM 
66 
57 
2 
7AM 
60 
57 
3 
1 P M 
67 
56 
3 
7AM 
A T> T\/f 
58 
53 
Rain wet the earth, 
4 
6AM 
46 
50 
as low as the bulb 
1844, AUGUST. 
8AM 
56 
53 
of thermometer. 
6 
12 M 
76 
68 
Depth 8 inches. 
4 
„ . 
7PM 
68 
65 
6PM 
7AM 
59 
50 
55 
49 
Cloudy. 
Overcast. 
30 
5PM 
69 
64 
Dry. 
5 
e • 
8AM 
56 
50 
Chilly. Thermome- 
1844, SEPTEMBER. 
ter put 13 inches 
1 
Gk AM 
60 
61 
Earth, morning of 2d, 
deeper. 
58°. 
4PM 
67 
56 
# . 
7PM 
64 
59 
6 
7AM 
50 
49 
Temp, of fresh rain 
4 
6AM 
46 
55 
water 54,° fell at 
12 M 
64 
56 
4 P. M. Air 54°. 
7PM 
59 
58 
Clear. 
7 
7AM 
48 
51 
Cloudy. 
5 
6 AM 
42 
51 
• • 
1 P M 
52 
50 
Clear. 
12 M 
72 
59 
Dry and clear. 
8 
7AM 
46 
46 
Chilly. 
7PM 
62 
59 
1 P M 
62 
50 
Clear, but some sho- 
6 
6AM 
41 
53 
Clear. 
wers. 
12 M 
74 
58 
15 
7 AM 
46 
44 
7PM 
60 
56 
Clear. No wind. 
• • 
12 M 
66 
52 
,7 
7AM 
48 
54 
Foggy. 
. . 
6PM 
62 
64 
7 P M 
65 
58 
16 
6AM 
56 
52 
8 
7AM 
50 
56 
Foggy. 
, , 
2 P M 
60 
56 
1 P M 
76 
62 
8PM 
56 
54 
7PM 
65 
61 
Overcast; sultry. 
17 
6PM 
50 
46 
The earth, when 
18 
SAM 
46 
overcast, does not 
. . 
2PM 
50 
48 
seem to lose its 
19 
8AM 
54 
44 
caloric. 
. . 
4PM 
62 
50 
9 
7AM 
59 
59 
20 
8AM 
50 
48 
. , 
12 M 
80 
62 
Hot; sultry. 
. . 
12 M 
56 
52 
7 P M 
70 
62 
21 
SAM 
46 
48 
io 
7AM 
53 
59 
. . 
12 M 
48 
48 
. . 
1 P M 
84 
64 
5PM 
41 
42 
Even’g. 
70 
64 
Overcast. 
22 
8 A M 
40 
40 
li 
7AM 
64 
62 
Overcast; wind high 
3PM 
50 
46 
SE. 
