ACIDITY IN DETERMINING SOUNDNESS OF CORN. 



21 



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. 



Grade. 



Number of sam 



pies. 













Sound 



Germi- 









Sound 

 corn. 



Germi- 

 nation. 



Acidity. 



corn. 



nation. 









Per cent.. 



Per cent. 



1 



1 



1 



96.8 



100.0 



25 



25 



25 



91.9 



84.6 



34 



34 



33 



90.2 



78.7 



9 



9 



9 



72.2 



54.4 



26 



26 



24 



92.5 



82.0 



33 



33 



29 



90.1 



73.0 



5 



4 



2 



84.8 



51.7 



19 



19 



19 



92.7 



83.8 



19 



17 



19 



89.2 



74.9 



3 



3 



3 



90.2 



52.0 



39 



39 



39 



90.9 



81.9 



23 



23 



23 



89.4 



-78.2 



2 



2 



2 



60.8 



35.0 



11 



11 



11 



92.3 



85.4 



36 



36 



36 



91.5 



83.8 



14 



14 



14 



86.5 



69.4 



6 



6 



6 



70.3 



44.0 



41 



41 



41 



91.9 



85.0 



24 



24 



24 



88.7 



71.5 



7 



7 



7 



84.5 



60.0 



3 



3 



3 



27.4 



21.0 



Acidity. 



1912. 



December 



1913. 

 January 



February 



March 



April 



May 



[No. 2.. 

 JNo. 3.. 

 1 No. 4.. 

 I Sample 



[No. 3.. 

 •Wo. 4.. 

 [Sample 



fNo. 3.. 

 -Wo. 4.. 

 [Sample 



No. 3.. 

 No. 4.. 

 Sample 



No. 2.. 

 No. 3.. 

 No. 4.. 

 Sample 



fNo. 2.. 

 JNo. 3.. 

 lNo. 4.. 



[Sample 



C.c. 

 19.0 

 .20.8 

 21.9 



28.5 



18.6 

 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 



