10 



BULLETIX 168, 17. S. DEPARTMENT OF AGBICULTTJBE. 



cases, when examining white com it will not be necessary to make 

 weig hi ngs unless there are more than. 5 kernels of corn of other 

 colors, and on yellow corn, unless there are more than 12 kernels of 



Fig. 8. — "Cracked" corn, consisting of piece? of kernels -which v. ill pass through the sieve with the 

 quarter-inch perforations. (Natural size.) 



other colors, in a 100-gram sample, as 5 kernels will usually be less 

 than 2 per cent and 12 kernels less than 5 per cent. 



More difficult problems arise, however, in dealing with special 

 types or varieties of corn or with individual kernels, such as "straw- 



Fig. 9.— Small whole kernels which will pass through the sieve with the quarter-inch perforations, 

 hut which should not be classed as 'cracked" corn. (Natural size.) 



colored," " red-cast " yellow, etc., which are difficult to classify. At 

 most, such classifications can be only arbitrary and in keeping with 

 the best commercial practices. In order to bring about the greatest 

 uniformity of application, some of the more important types of ker- 

 nels from the standpoint of color are shown in Plate I in natural 



