ACIDITY IN DETERMINING SOUNDNESS OF CORN. 
29 
Table XIV. — Relation of the percentages of sound corn and of germination of samples 
above 22 c. c. acidity to the same factors of samples below 22 c. c. acidity, by months, 
from December, 1911, to May, 1913, inclusive, for grades Nos. 2, 3, 4, and sample. 
Year and 
month. 
1911. 
December. 
1912. 
January . . . 
February. . 
March 
April 
May 
June 
July 
August 
September 
October... 
November. 
December . 
1913. 
January . . . 
February. . 
March 
April 
May 
Acidity 
above 
or below 
22 c. c. 
f Above , 
\Below , 
/Above 
\Below 
/Above . 
\Below . 
/Above 
\Below 
/Above 
\Below 
/Above 
\Below 
/Above 
\Below 
/Above 
\Below 
/Above 
\Below 
/ \bove 
\Below 
/Above 
I Below , 
/Above 
\Below 
/Above 
\Below 
/Above 
\Below 
/Above 
\ Below 
/Above 
\Below 
/Above 
\Below 
/Above 
\ Below 
Grade No. 2 corn. 
Average. 
Per 
cent. 
91.6 
91.7 
1 91.7 
37 90.6 
90.9 
90. 
88.8 
91.1 
91.7 
92.2 
91.5 
92.2 
91.8 
90. 8 
96. S 
Per 
cent. 
03.3 
20.0 
46.0 
12.0 
48.3 
30.9 
54.4 
30. 8 
53.9 
23.6 
51.5 
25. 6 
54.1 
8.0 
44.5 
11)0 
85.0 
C. c. 
23.9 
17.3 
23.2 
16.9 
23.8 
19. 8 
24.2 
20.1 
25.3 
20. 6 
23.4 
19.3 
25.1 
19.5 
19.0 
Grade No. 3 corn. 
Average. 
Per 
vent. 
91.2 
91.9 
95.1 
91.3 
83.7 
88.8 
86. 
87.5 
87. 8 
89.1 
87.3 
92.1 
96.2 
95.1 
94.9 
Per 
cent. 
58.0 
77.3 
2.0 
59.8 
24.8 
42.0 
28.5 
42.2 
31.7 
53.3 
27.4 
62.3 
25.8 
52.8 
22.5 
64.9 
33.5 
77.7 
85.5 
76.0 
82.0 
95.4 83.5 
94.6 
91.5 
81.8 
'83.' 8 
71.5 
C.c. 
26.0 
19.1 
22.2 
17.7 
25.1 
18.1 
23.3 
18.4 
24.5 
20.8 
25.6 
20.3 
25.1 
20.1 
24.5 
20.2 
24.2 
16.7 
23.6 
19.9 
23.6 
18.5 
17.8 
iY.'b 
is." 7 
16.' 6 
Grade No. 4 corn. 
91 
Average. 
Per 
cent. 
89.1 
91.1 
87.0 
91.1 
76.4 
91.0 
87. 2 
67.3 
82.7 
80.7 
85.4 
81.6 
81.8 
85.4 
77.3 
93.1 
82. 4 
91.3 
95.1 
92.5 
93.6 
92.' 5 
Per 
cent 
62.*: 
67.3 
64.3 
12.0 
47.0 
60.0 
40.9 
18, 
27.4 
24.0 
33.9 
17.7 
44.0 
24.6 
42.0 
27 
75.6 
20.7 
79.0 
80.2 
77.0 
75.0 
78." 5 
69.'6 
60.6 
C.c. 
23.1 
19.4 
22 
17.4 
24.2 
1 
23.0 
17.4 
24. 
19.4 
25.4 
19.4 
21.3 
28.5 
21.5 
29.5 
18. 
28.2 
16.9 
28.8 
15.4 
23.7 
20.3 
22.3 
19.2 
18.2 
ii'.k 
16.2 
17.'2 
Sample grade. 
Average. 
Per 
cent. 
84.4 
90.8 
51.4 
90.2 
60.6 
91.2 
54. 
89.5 
32.0 
81 
43.6 
72.3 
65.1 
82.7 
78.9 
76.5 
86.8 
70.0 
6.0 
43.4 
90.2 
76.8 
82.2 
96.9 
93.9 
34.6 
91.7 
64.5 
83.2 
Per 
cent 
45.8 
22.0 
36.6 
11.1 
20.9 
11.1 
8.2 
5.7 
31.2 
11.7 
37.7 
10.3 
51.0 
0. 5 
28 
40.0 
16.0 
73 
60.0 
62.0 
52.0 
24 
46.0 
43 3 
45.0 
4.0 
54.0 
C.c. 
28.5 
19.6 
37.4 
18.2 
27.5 
17.4 
27.2 
19.4 
31.5 
19.3 
30.4 
18.8 
28.9 
16.0 
33.2 
28.5 
21.0 
37.5 
46.7 
29.1 
15.9 
\5 
25.0 
16.8 
39.9 
20.1 
28.2 
16.6 
34.8 
18.0 
Table XV further shows the relation of the degree of acidity of 
corn to the percentage of germination. Although a test of germi- 
native power could never be used in a practical way in grading corn 
commercially, except, possibly, in cases of appeal, its value and 
reliability as a criterion of soundness and quality are, nevertheless, 
generally acknowledged. 
