156 THE BELL SYSTEM TECHNICAL JOURNAL, JANUARY 1953 



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TREATMENT RETENTION IN POUNDS PER CUBIC FOOT 



Fig. 10— Soil -block tests against Lentinus lepideus; weathered southern pine 

 sapwood blocks; comparison of (A) creosote No. 5340, (B) a 5 per cent solution 

 of pentachlorophenol in Standard Oil Company of New Jersey No. 2105 Process 

 Oil and (E) a 50/50 by volume blend of the two; the relation of operational weight 

 losses, losses by decay, and retention at treatment, Ib/cu ft; based on Madison 

 data. The Madison treatment thresholds for these 3 preservative solutions were 

 set at 7.5, 2.4 and 3.4 Ib/cu ft, respectively. See text. Table VIII, companion Figs. 

 11 & 12, Bibliography, Reference 41. 



