30 



BULLETIN 681, U. S. DEPARTMENT OF AGRICULTURE. 





.14 





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Arc off. Static elec- 

 tricity detected on 

 belts by electroscope. 



Temperature of feed at 

 A, 82° F. 



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03 



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 1 



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chine and tighten belts. 

 Started to rain. Test 

 discontinued. 



Mill started. 



One quart feed. Elec- 

 tric arc. 



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= 22 § 

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