58 



BULLETIN 299, U. S. DEPARTMENT OP AGRICULTURE. 







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6.7 

 7.6 

 8.5 

 9.2 

 10.2 

 11.0 

 11.9 

 12.8 

 13.6 

 14.5 

 15.3 

 16.1 

 17.1 

 17.9' 

 18.8 

 19.6 

 20.5 

 21.3 

 22.2 

 23.1 

 24.0 

 24.8 

 25.8 

 26.7 

 27.6 

 28.5 

 29.4 

 30.3 

 31.1 





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8.2 

 9.2 

 10.2 



11.1 



12.1 

 13.1 

 14.1 

 15.1 

 16.1 

 17.1 

 18.1 

 19.1 

 20.1 

 21.1 

 22.1 

 23.2 

 24.2 

 25.2 

 26.2 

 27.2 

 28.2 

 29.3 

 30.3 

 31.3 

 32.4 

 33.4 

 34.4 

 35.5 

 36.5 



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