EXERCISE 44 

 THE CORN GRADER 



Object. To study the construction of the corn grader 

 and test its efficiency for grading corn. 



Explanation Even though seed corn is selected with 

 considerable care, the ears will not be uniform and the kernels 

 will not be of the same shape and size when shelled. It is 

 necessary for seed corn to be uniform in shape and size for 

 uniform distribution in planting. A good corn grader will 

 remove those kernels that are very large, very small, or ir- 

 regular in shape. 



Equipment. 1. A corn grader. 



2. One half bushel of shelled corn. 



3. A scale weighing one hundred pounds or more and 

 weighing accurately to one half pound. 



Directions. Part I. Structure of the Grain Grader. 

 Make the necessary measurements and observations to 

 answer the following questions. Record answers in the 

 following outline form : 



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