ACIDITY IN DETERMINING SOUNDNESS OF CORN. 9 
the correspondingly high average percentage of germination 95.2. 
The results shown in this table were all determined in 1912. 
Table II. — Average acidity and average germination of corn selected for seed from the 
crops of six different years. 
Crop of— 
Number 
of sam- 
ples. 
Average 
acidity. 
Average 
germina- 
tion. 
1906 
1 
2 
3 
11 
17 
93 
C.c. 
15.1 
21.0 
21.2 
19.5 
17.7 
16.7 
Per cent. 
96 
1908. . 
98 
1909 
77 
1910 
86 
1911 
91 
1912. . 
98 
Total 
127 
17.2 
95.2 
CORN ON THE FARM. 
Table III shows a comparison of the analyses of corn at the time of 
harvest and at different periods of storage both in the crib and in 
shocks. The shocks were well put up and afforded good protection 
to the corn. Attention is invited to the low degree of acidity and 
high moisture content of the corn on October 1 and to the decrease 
in moisture on the succeeding dates. It will be noted that on May 1 
the corn was still low in degree of acidity, after having lost its ex- 
cessive moisture during storage through the winter on the farm. 
Table III. — Acidity and moisture of corn kept from October 1. 1910, to May 1, 1911, 
inclusive, in shocks and in crib under country conditions at the Maryland station, College 
Park, Md. 
Sample. 
Item of comparison. 
Dates of sampling. 
Oct. 1, 
1910. 
Feb. 13, 
1911. 
Mav 1, 
1911. 
Composite inside of shocks. . 
Composite outside of shocks. 
Composite of shocks 
Composite of crib 
/Moisture per cent. 
\Acidity c.c. 
(Moisture per cent. 
\Acidity c.c. 
( Moisture per cent. 
\ Acidity c.c. 
24.9 
11.0 
24.9 
13.5 
23.4 
12.6 
(Moisture per cent. 
\Acidity c.c. 
16.0 
17.0 
16.0 
19.0 
16.0 
18.0 
16.9 
17.5 
14.6 
17.0 
13.3 
17.0 
13.9 
17.0 
14.0 
15.0 
1 No corn in crib. 
Attention is called in Table IV to a comparison of the keeping 
qualities of corn stored in different cribs used throughout the Middle 
West. Corn was examined in January, February, March, April, and 
May, 1913, and it was found that very little change had taken place 
while stored in any of the several cribs. On the whole, the corn was 
42125°— 14 2 
