4 THE DETERIOEATION OF COEN IN STOEAGE. 



The corn used in these experiments was taken from cars selected 

 from those received at Bahimore, Md., on February 16, 1909. So 

 far as the records available show, 4,050 bushels of this corn were 

 grown in the Dakotas, the remaining 1,500 bushels having originated 

 in Ilhnois. The 3,050 bushels first run into the bin consisted of 

 practically all Dakota corn. The next draft of 500 bushels was 

 Ilhnois corn with, a small admixture of Dakota corn. The 1,000 

 bushels following consisted of Illinois corn, while the 1,000 bushels 

 in the tenth and eleventh drafts at the top of the bin were composed 

 of corn from the Dakotas. 



In fining the bin each draft consisted of 500 bushels, with the 

 exception of the first 50 bushels at the bottom of the bin. After 

 almost every draft, samples were taken with a 4-foot grain trier, 

 one from the center and one from near each corner of the bin, and 

 the difterent factors representing the quahty and condition of the 

 corn were determined for each sample. The average results of the 

 analyses of the samples representing the difi"erent drafts are given 

 in Table I. These results show the moisture content; weight per 

 bushel; w^eight of 1,000 kernels; sound corn; damaged corn; other 

 grains; dirt, cobs, etc. ; badly broken corn; and germination of whole 

 kernels. A comparison of Table I with figure 1 will show^ the exact 

 location of the corn in the bin represented by each set of averages 

 given in the table. 



Table 1— Average condition and quality of the 5,550 bushels of corn at the beginning 

 of the experiment, as shown by the analyses of samples taken with a 4-foot grain trier 

 after the different drafts were emptied into the bin a 



a \11 figures in the table other than those in the Trst two roUimns represent averages, so that the final 

 average of all the com in the bin is based on a total of 43 samples, or 1 sample for appro-ximately ever> 

 130 bushels of corn emptied into the bin. 



As will be seen from the table, the average moisture content of 

 the corn in the difi'erent drafts varied from 17 per cent in the eighth 

 and ninth to 18.8 per cent in the sixth draft, with an average of 

 17.8 per cent for all of the corn in the bin. The w^eight per bushel 



[Cir. 43] 



