EXERCISE 14. THE STUDY OF AN EAR OF CORN 



Equipment: Ten-ear samples of different varieties of 

 corn; tape line; a pair of postal scales or a torsion balance. 



Method: Having supplied each student with a ten-ear 

 sample, the work should proceed as follows: (1) Number 

 the individual ears of each sample on a small tab attached 

 to the butt of the ear by means of a small nail. 



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