EXERCISE 43. A STUDY OF SOY BEANS 



Equipment: Samples of different varieties of soy beans, 

 including type samples, a balance and a weight-per-bushel 

 tester. 



Method: Give each student a half pint of soy beans 

 containing a small admixture of two or three other varieties 

 and some impurities. Divide the sample into two equal 

 parts, make an examination for purity and condition, and 

 record the results in the table, using the type samples to aid 

 in the identification of the varieties. 



Weight. 



Per Cent. 



(Soy beans of the variety class. 

 Soy beans of other varieties . . 

 Other seeds 

 Foreign matter 



Condition 



Sound seeds. , 

 Broken seeds . 

 Moldy seeds. . 



Weight of 100 soy beans of variety class . 

 Weight per measured bushel 



The same procedure may be used in the study of cow 

 peas. 



Discussion : Soy beans are easily broken in the threshing 

 process, hence the grain found on the market usually has a 



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