BULLETIIT 676, XJ. S, DEPARTMENT OP AGRICULTURE. 



range in specific gravity and strength values than was true of the data 

 available heretofore, made it evident that these assumptions were 

 inaccurate and that there was a better and more correct method 

 expressing the actual relations between specific gravity and strength. 



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SPECIFIC GRAViTY •'• ■ 



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SPECiFiC QRAViTY 



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 STRESS AT ELASTIC LIMIT 





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SPECIFIC GRAVITY 



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Fig. 3. 



