ACIDITY IN DETERMINING SOUNDNESS OF CORN. 



9 



the correspondingly high average percentage of germination 95.2. 

 The results shown in this table were all determined in 1912. 



Table II. — Average acidity and average germination of corn selected for seed from the 



crops of six different years. 



Crop of — 



Number 

 of sam- 

 ples. 



Average 

 acidity. 



Average 

 germina- 

 tion. 



1906 



1 



2 



3 



11 



17 



93 



C.c. 

 15.1 

 21.0 

 21.2 



13.5 

 17.7 

 16.7 



Per cent. 

 96 



1908 



98 



1909 . . 



77 



1910.. 



S6 



1911 



91 



1912 



98 







Total 



127 







17. 2 95. 2 











CORN ON THE FARM. 



Table III shows a comparison of the analyses of corn at the time of 

 harvest and at different periods of storage both in the crib and in 

 shocks. The shocks were well put up and afforded good protection 

 to the corn. Attention is invited to the low degree of acidity and 

 high moisture content of the corn on October 1 and to the decrease 

 in moisture on the succeeding dates. It will be noted that on May 1 

 the corn was still low in degree of acidity, after having lost its ex- 

 cessive moisture during storage through the winter on the farm. 



Table III. — Acidity and moisture of corn kept from October 1. 1910, to May 1, 1911, 

 inclusive, in shocks and in crib wider country conditions at the Maryland station, College 

 Park, Md. 



Sample. 



Composite inside of shocks.. 

 Composite outside of shocks. 



Composite of shocks 



Composite of crib 



Item of comparison. 



[Moisture per cent. 



\Acidity c.c. 



/Moisture per cent. 



\Acidity c. c. 



/Moisture per cent. 



(.Acidity c.c. 



/Moisture per cent. 



\ Acidity c.c. 



Dates of sampling. 



Oct. 1, 

 1910. 



24.9 

 11.0 



24.9 

 13.5 



23.4 

 12.6 



Feb. 13, 

 1911. 



16.0 

 17.0 



16.0 

 19.0 



16.0 

 1S.0 



16.9 

 17.5 



May 1, 

 1911. 



14.6 

 17.0 



13.3 

 17.0 



13.9 

 17.0 



14.0 

 15.0 



1 No corn in crib. 



Attention is called in Table IV to a comparison of the keeping 

 qualities of corn stored in different cribs used throughout the Middle 

 West. Corn was examined in January, February, March, April, and 

 May, 1913, and it was found that very little change had taken place 

 while stored in any of the several cribs. On the whole, the corn was 



42125°— 14 2 



