430 



THE BELL SYSTEM TECHNICAL JOURNAL, MARCH 1953 



Table XI — Inspection Ratings 

 %-inch southern pine sap wood stakes in test 6 and 7 years; 1941 series; 

 Gulfport test plot. 



Creosote 

 BTL No. 



5283 



5286B 



5286A 



5285A 



5285A 



Average 



retention at 



treatment 



Ib/cu ft 



8.12 



8.02 



7.97 



8.07 



7.76 



7.59 



7.79 



7.91 



Test 

 period 

 years 



Niunber and per cent of specimens rated 



29 

 72.5 



17 

 42.5 



16 

 36.4 



2 

 4.6 



25 

 59.5 



21.4 



10 

 25.0 



1 

 2.5 



25 

 59.5 



8 

 19.0 



10 

 25.0 



8 

 20.0 



36 

 90.0 



29 

 72.5 



35 

 70.0 



17 

 34.0 



20.0 



17 

 42.5 



22 

 50.0 



19 

 43.2 



10 

 23.8 



14 

 33.3 



27 

 67.5 



19 

 47.5 



15 

 35.7 



32 

 76.2 



27 

 67.5 



20 

 50.0 



4 

 10.0 



9 

 22.5 



12 

 24.0 



23 

 46.0 



1 

 2.5 



2 

 5.0 



1 

 2.3 



14 

 31.8 



4 

 9.5 



10 

 23.8 



1 

 2.5 



18 

 45.0 



1 

 2.4 



1 

 2.5 



8 

 20.0 



4 

 8.0 



1 

 2.5 



3 

 6.8 



3 



6.8 



1 

 2.4 



4 

 9.5 



1 

 2.5 



1 

 2.4 



1 

 2.5 



1 

 2.5 



2 

 5.0 



2 

 4.0 



2 

 4.0 



2 

 5.0 



3 

 7.5 



2 

 4.6 



6 

 13.6 



2 



4.8 



5 



11.9 



1 

 2.5 



2 

 5.0 



2 



4.8 



1 

 2.5 



3 

 7.5 



1 

 2.0 



4 

 8.0 



