ACIDITY IN DETERMINING SOUNDNESS OF CORN. 
31 
age of germination found in samples with acidity greater than 22 
c. c. and in samples with acidity less than 22 c. c. 
Figures 24a and 24& serve the purpose of showing the range in 
the degree of acidity found in each grade, by months. They show, 
further, by months, the number of samples in each grade with a 
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Pig. 24b.— Graphic comparison of the increase in degree of acidity with the decrease in percentage of sound 
kernels found in representative samples of corn as received at a principal terminal market from Sep- 
tember, 1912, to May, 1913, inclusive. The individual bars represent the maximum and the minimum 
degrees of acidity found in each grade. The figures on the bars refer to the number of samples in each 
grade which fell within the acidity ranges of below 22, between 22.1 and 26, between 26.1 and 30, and 
above 30 c. c. The number just below the bar refers to the average percentage of sound kernels found 
in the samples which fell within the acidity range designated. 
degree of acidity below 22, between 22.1 and 26, between 26.1 and 
30, and above 30 c. c, and also the average percentage of sound 
corn (including sound broken kernels) found in the samples which 
fell within these ranges in degree of acidity. Attention is called in 
these figures to the low percentage of sound corn found in samples 
within the higher ranges of acidity, to the small range in the degree 
