1912. 



PUBLIC DOCUMENT — No. 31. 



241 



rather in excess of the Rustler Dent. The protein of the 

 coarse, less mature dents would probably have been somewhat 

 less had they been more completely matured. The fiber per- 

 centage is noticeably less in the mature lots, 1.5-1 as against 2.34 

 for the immature types. A high fiber is believed to be character- 

 istic of immature corn. The percentages of starch are remark- 

 ably uniform. 



While corn has been bred in an experimental way which bore 

 decidedly different chemical characteristics (namely, high pro- 

 tein, high starch and high fat), such corn has not come into 

 general use ; when, therefore, the grain is grown primarily 

 as a food for stock it is believed that the fanner can do no 

 better than to grow the variety that will in his experience pro- 

 duce the largest number of bushels of mature corn per acre. 

 This fact is borne out not only by the analyses herein reported, 

 but also by others made by the author. Chemical composition 

 cannot, at the present time, be considered a factor in the selec- 

 tion of seed corn where the crop is used for the sustenance of 

 live stock. 



An evident effect of the season upon the starch content is 

 shown in the case of Rustler, Early Mastodon and White Cap 

 Yellow, all grown in two successive years. In each case the 

 starch content was slightly lower for 1909, an unfavorable year. 



Analysis of Corn Cob {Per Cent.). 



[Dry Matter.] 



The above analyses represent the product of several varieties 

 of cob produced during the season of 1908. One notes com- 



