Freezing Injury of Seed Corn 
59 
Table 20 — Freezing temperatures during autumn , 19 Ilf. 
Degrees F . 
Hours 
Oct. 
Oct. 
Nov. 
Nov. 
Nov. 
Nov. 
' Nov. 
Nov. 
Nov. 
Nov. 
Nov. 
of day 
26 
27 
8 
13 
15 
16 
17 
18 
19 
20 
22 
A. M. 
12-1 .... 
28 
22 
25 
12 
19 
‘ ’ 
1-2 .... 
27 
31 
23 
! 25 
10 
19 
2-3 .... 
27 
30 
22 
25 
8 
20 
• • 
3-4 .... 
26 
29 
21 
26 
7 
21 
4-5 .... 
25 
28 
19 
27 
32 
6 
22 
32 
5-6 .... 
24 
27 
18 
28 
j 31 
5 
22 
30 
6-7 .... 
25 
26 
• • 
18 - 
29 
5 
22 
30 
7-8 .... 
26 
26 
32 
31 
19 
28 
4 
23 
29 
8-9 .... 
31 | 
30 
29 
21 
30 
‘ ; 
6 
26 
28 
9-10... 
30 
24 
8 
10-11. . . . 
31 
25 
11 
11-12. . . . 
27 
14 
P. M. 
12-1 .... 
29 
18 
1-2 .... 
31 
19 
2-3 .... 
32 
21 
3-4 .... 
32 
’ 
22 
4-5 .... 
31 
21 
5-6 .... 
31 
28 
20 
6-7 .... 
30 
27 
20 
7-8 .... 
27 
25 
32 ! 
20 
8-9 .... 
32 
25 
25 
27 
19 
9-10. . . . 
30 
23 
24 
23 
19 
10-11. . . . 
30 
22 
25 
19 
18 
11-12.... 
28 
.. 
" 
21 
24 
15 
18 
Table 21 — Duration with mean and minimum temperatures of 
freezing periods during autumn of 191 If 
Date 
— 
Hours 
in period 
Mean 
temperature 
degrees F. 
Minimum 
temperature 
degrees F. 
Oct. 26-27 
13 
27.6 
24 
Nov. 8 
8 
28.4 
26 
Nov. 13 
1 
32.0 
32 
Nov. 15 
4 
30.2 
29 
Nov. 15, 16, 17 
40 
25.3 
18 
Nov. 18 
2 
31.5 
31 
Nov. 18, 19, 20 
38 
16.9 
4 
Nov. 22 
5 
29.8 
28 
Compiled from Table 20. 
