440 



THE BELL SYSTEM TECHNICAL JOURNAL, MARCH 1953 



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TREATMENT RETENTION IN POUNDS PER CUBIC FOOT 



Fig. 24— Theoretical lines for estimating threshold retention for creosote No. 

 5286B; ^-inch southern pine sapwood stakes. 



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TREATMENT RETENTION IN POUNDS PER CUBIC FOOT 



Fig. 25 — Theoretical lines for estimating threshold retention for creosote No. 

 5286 A; %-inch southern pine sapwood stakes. 



