50 FIELD AND LABORATOEY STUDIES OF CROPS 



4. Tips of Ears. The tips should be well filled and if 

 the ears are full size it is desirable to have the tip of the cob 

 capped over with grains. 



5. Butts of Ears. This end of the cob should be well 

 rounded over with grains and show a medium-sized attach- 

 ment for the shank. 



6. Uniformity of Kernels. Kernels should be uniform 

 in size, otherwise the planter will fail to give a uniform drop. 



7. Shape of Kernels. The kernels should be slightly 

 wedge shape and retain their thickness well down to the tip. 



8. Length of Ear. The proper length for an ear will 

 depend upon the locality. A standard length should be 

 established by getting the average length of a number of 

 good matured ears. 



9. Circumference of Ear. The circumference should be 

 about three-fourths to four-fifths of the length when meas- 

 ured about two inches from the butt. 



10. Furrows between the Rows. The space between the 

 rows should be small. 



11. Space between the Kernels at Cob. The kernels 

 should retain their thickness down almost to the tip with no 

 space between them at the point where they are attached 

 to the cob. 



12. Proportion of Grain to Cob. A medium-sized cob 

 with deep grains is to be desired. The percentage of grain 

 should be between 83 and 86 for most varieties of corn. 



13. Composition and Feeding Value. A large proportion 

 of hard flinty endosperm is desirable. 



