26 
BULLETIN 102, U. S. DEPARTMENT OE LGRlCULTUKE. 
RELATION TO GERMINATION AND SOUND KERNELS. 
Table XII shows a comparison of the degree of acidity with the 
percentage of germination and the percentage of sound corn (ex- 
clusive of broken kernels). The monthly averages of these three 
factors are shown for each grade. Examination of this table will 
also reveal a consistent decrease in the percentage of sound corn and 
the percentage of germination from the high to the lower grades and 
a corresponding consistent increase in the degree of acidity. 
Table XII. — Relation of the percentage of sound corn, the percentage of germination, 
and the degree of acidity to the commercial grades, by months, from December, 1911, to 
May, 1913, inclusive. 
Year and 
in ont h . 
Grade. 
Number of samples. 
Sound 
corn. 
Germi- 
nation. 
Sound 
corn. 
Germi- 
nation. 
Acidity. 
Acidity. 
1911. 
(No. 3 
18 
120 
38 
68 
145 
22 
34 
123 
28 
59 
112 
15 
6 
43 
99 
26 
39 
117 
78 
43 
38 
116 
67 
10 
59 
66 
34 
8 
34 
65 
34 
3 
20 
41 
35 
2 
17 
61 
18 
1 
5 
43 
97 
34 
16 
112 
28 
62 
133 
21 
31 
108 
28 
56 
108 
13 
6 
43 
99 
26 
39 
116 
75 
41 
37 
111 
65 
10 
59 
64 
34 
8 
34 
60 
32 
3 
20 
40 
34 
2 
17 
60 
18 
1 
5 
43 
97 
34 
12 
no 
27 
65 
134 
21 
31 
111 
28 
59 
112 
14 
6 
43 
99 
26 
39 
117 
78 
43 
38 
114 
67 
10 
59 
66 
34 
8 
34 
65 
34 
3 
20 
41 
35 
2 
17 
61 
18 
1 
5 
43 
97 
34 
Per cent. 
93.8 
91.2 
89.6 
91.9 
90.8 
86.6 
91.4 
91.3 
83.4 
90.8 
90.1 
77.6 
91.9 
89.3 
87.2 
.55.0 
89.8 
86.3 
78.9 
56.3 
90.6 
88.4 
82.8 
68.6 
90.4 
87.0 
80.1 
78.9 
90.1 
88.4 
82.2 
83.4 
91.8 
88.3 
81.4 
70.0 
92.1 
87.5 
81.7 
6.0 
91.0 
91.1 
90.8 
86.1 
Per cent. 
76. 1 
68. 8 
56.3 
75.3 
64. 4 
39.5 
57.9 
46.7 
18.5 
62.0 
41.1 
9.7 
63.3 
54.8 
45. 5 
17.5 
45.4 
41.3 
25.1 
20.6 
47.6 
41.3 
28.2 
17.4 
44.4 
40.5 
20.8 
6.5 
43.7 
40.2 
26.8 
33.3 
29.2 
31.2 
22.6 
18.0 
48.5 
38..0 
41.1 

37.2 
67.4 
75.4 
68.4 
C. c. 
19.7 
December 
No. 4 
(.Sample 
19.7 
22.3 
1912. 
January 
fNo.3 
{No. 4 
[Sample 
17.0 
17.6 
19.2 
February . 
(No.3 
{No.4 
[Sample 
17.8 
17.2 
19.9 
(No.3 
16.9 
March 
■No. 4 
[Sample 
17.5 
22.3 
April 
(No.2 
J No. 3 
INo. 4 
(Sample. 
14.8 
16.4 
17.5 
25.9 
(No.2 
17.5 
jNo.3 
18.4 
]No. 4 
20.7 
(Sample 
26.1 
(No.2 
17.1 
No.3 
INo. 4 
[Sample 
18.8 
22.8 
26.3 
July 
(No.2 
JNo. 3 
INo. 4 
21.5 
22.9 
28.8 
33.2 
(No.2 
21.9 
JNo.3 
23.4 
August 
iXo. 4 
27.9 
[Sample , 
23.2 
(No. 2 
24.4 
No. 3 
24.0 
September... 
lNo.4 
[Sample ■ 
29.5 
37.0 
fNo. 2 
20.0 
October 
No.3 
No. 4 
22.9 
25.0 
46.7 
(No.2 
20.6 
I No. 3 
18.3 
November. .. 
INo. 4 
16.2 
[Sample 
17.1 
