ACTDTTY IN DETERMINING SOUNDNESS OF CORN, 
27 
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 — Continued. 
Year and 
month. 
1912. 
December. . . 
1913. 
January 
February 
March 
April 
May 
Grade. 
fNo. 2.. 
JNo. 3.. 
]No. 4.. 
[Sample 
fNo. 3.. 
^No. 4.. 
[Sample 
fNo. 3.. 
^No. 4.. 
[Sample 
No. 3.. 
No. 4.. 
Sample 
fNo. 2... 
No. 3.. 
lNo. 4.. 
I Sample 
fNo. 2.. 
JNo. 3.. 
JNo.4... 
I Sample 
Number of samples. 
Round 
corn. 
Germi- 
nation. 
Acidity. 
Sound 
corn. 
Per cent. 
96.8 
91.9 
90.2 
72.2 
92.5 
90.1 
S4, 8 
92.7 
89.2 
90.2 
90.9 
89. 4 
60.8 
92.3 
91.5 
70.3 
91.9 
88. 7 
84.5 
27.4 
Germi- 
nation. 
Acidity. 
Per cent. \ 
10n. 
84.6 
78.7 
54.4 
82.0 
73.0 
51.7 
83.8 
74.9 
52.0 
SI. 9 
78. 2 
35.0 
85.4 
83.8 
69. 4 
44.0 
85. 
71.5 
60. 
21.0 
C.c. 
19.0 
20.8 
21.9 
28.5 
18.0 
19.4 
20.9 
17.7 
18.1 
18.7 
17.4 
17.7 
30.0 
14. 6 
15.7 
16.1 
22.3 
14.8 
16.0 
17.2 
29.2 
Figure 23 represents the data compiled in Table XII. The curves 
denoting monthly average degree of acidity bear the same relation 
to each other as do the curves denoting monthly average percentage 
of germination and sound corn. 
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Fig. 23. — Curves showing, by grades, the monthly average degree of acidity, the percentage of germination, 
and the percentage of sound corn in representative samples of corn received at a principal terminal 
market (C). 
While there is considerable variation between the grades in all 
the factors throughout the greater part of the year, confusion of 
the lines denoting little variation and an overlapping of the grades 
occurs at points indicated as October and November. This is due 
