ACIDITY IN DETEKMINING SOUNDNESS OF COKN. 



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. 



/Above 

 (Below 



(Above 

 \Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



/Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 (Below 



(Above 

 \ Below 



Grade No. 2 corn. 



Average. 



Per 



cent 



91.7 

 38, 89.8 



1' 91.7 

 371 90.6 



90.9 

 90.0 



88.8 

 91.1 



91 



92.2 



91.5 

 92.2 



91.8 

 90. 



Per 

 cent. 



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 



85.4 

 85." 6 



C.c. 



23.9 

 17.3 



23.2 

 16.9 



23.8 

 19.8 



24.2 

 20.1 



25. 



20.6 



23.4 

 19.3 



25.1 

 19.5 



14.6 

 ii"8 



Grade No. 3 corn. 



Per 

 tent. 

 91.2 



93.8 



95.1 

 91.3 



89.3 

 78.6 



86.6 

 87.5 



87.8 

 89.1 



88.5 

 87.6 



87.3 

 87.8 



87.3 

 92.1 



96.2 

 95.1 



94.9 



95.8 



95.4 

 93."<j 

 94.' 6 

 91.5 



Per 

 cent. 

 58.0 

 77.3 



2.0 

 59.8 



C.c 



26.0 

 19.1 



22.2 

 17.7 



24.8 

 42.0 



28.5 

 42.2 



31.7 

 53.3 



27.4 



25.8 

 52.8 



22.5 

 64.9 



33 



76.3 



77.7 

 85.5 



76.0 

 82.0 



83.5 

 81." 8 



83.' 8 

 7L5 



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 



ii'.b 



i5.~7 



ie.'6 



Grade No. 4 corn. 



Average. 



Per 

 cent. 

 89.1 

 91.1 



87.0 

 91.1 



89.6 

 91.6 



76 



91.0 



67.3 



82. 



80.7 

 85.4 



79.9 

 81.6 



81.8 

 85.4 



81.1 

 89.3 



77.3 

 93.1 



82.4 

 91.3 



95.1 

 92.5 



93.9 

 93, 



93.6 

 92.' 5 

 90.'3 



Per 

 cent 

 62.4 

 69.4 



67.3 

 64.3 



12.0 

 47.0 



60.0 

 40.9 



18.3 

 27.4 



24.0 

 33. 9 



17.7 

 44.0 



24.6 

 42.0 



22.6 



27.8 

 75.6 



20. 

 79.0 



80.2 

 77.0 



58.7 

 74.7 



75.0 

 '78.' 5 

 69.'6 

 60.0 



C.c. 

 23.1 

 19.4 



22.9 

 17.4 



24.2 

 1 



23.0 



17.4 



24.8 

 19.4 



25.4 

 19.4 



29.8 

 21.3 



28.5 

 21.5 



29.5 

 18.7 



28.2 

 16.9 



28.8 

 15.4 



23, 

 20.3 



22.3 

 19.2 



18.2 

 17."8 



16.2 



17."2 



Sample grade. 



Average. 



Per 



cent 

 84.4 

 90.8 



51.4 

 90.2 



60.6 

 91.2 



54.8 

 89.5 



32.0 

 81.8 



43.6 

 72.3 



65.1 



82.7 



78.9 



76.5 

 86.8 



70.0 

 6.0 



43.4 

 90.2 



76.8 



93.9 



34.6 



91.7 



64.5 

 83.2 







83.8 



Per 

 cent 

 45.8 

 60.4 



22. P 

 36.6 



11.1 

 20.9 



11.1 



8.2 



5.7 

 31.2 



11.7 

 37.7 



10.3 

 51.0 



6.5 



28 

 40.0 



18.0 



16.0 



73.4 



60.0 

 62.0 



24 

 46.0 



43 3 

 45.0 



4.0 

 54.0 



C.c. 

 28.5 

 19.6 



37.4 



IS. 2 



27.5 

 17.4 



27.2 

 19.4 



31.5 

 19.3 



30.4 



18.8 



28.9 

 16.0 



28.5 

 21.0 



29.1 

 15.9 



28.5 



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. 



