ACIDITY IN DETERMINING SOUNDNESS OF CORN. 



15 



Figure 11 shows the direct and the proportional increase in the 

 degree of acidity with the decrease in percentage of germination of 

 samples taken from a car of corn which was shipped from Decatur, 

 111., to Baltimore, Md., and allowed to stand on the track in Baltimore 

 until it was in an ad- 



TEMPEPATURE 



WE/GHT PER BUSHEL 



DAMAGED KERNELS. 

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vanced stage of deterio- 

 ration. 



RELATION TO TEMPERATURE. 



Figure 12 shows the 

 average condition of a 

 cargo of corn loaded at 

 a United States seaport 

 compared with the aver- 

 age condition at the time 

 of discharge of the cargo 

 at a European port. The 

 degree of acidity varies 

 directly with the quality 

 and soundness of the corn, as is indicated by the variation of the 

 other factors graphically shown. 



In figure 13 reference is again made to a car of corn shipped from 

 Decatur, 111., to Baltimore, Md. At the time of its arrival at Balti- 

 more the corn contained an average moisture percentage of 18.60. 

 Four days after its arrival at Baltimore the temperature began to 



Fig. 12.— Graphic comparison of the average condition of a 

 cargo of corn at the time of loading at a United States sea- 

 port compared with its average condition at the time of 

 discharge at a European port, showing the efCect of tem- 

 perature through ocean transportation on various factors 

 which determine the soundness and quality. 



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Fig. 13.— Curves showing the effect of temperature on the degree of acidity and the percentage of 

 germination of a car of corn which was left on the railway track through advancing stages of 

 deterioration. 



increase rapidly, and with the increase in temperature there was a 

 proportional increase in degree of acidity and a corresponding 

 decrease in the percentage of germination. 



Figure 14 shows the relation of the degree of acidity to the condi- 

 tion of corn before and after a storage experiment in a large elevator 



