464 



THE BELL SYSTEM TECHNICAL JOURNAL, MARCH 1953 



Table XX — -Creosote Losses from Southern Pine Posts 

 Analyses of original creosote and creosote extracted from outer 1 inch below 

 ground line of posts in test 3, 6 and 7 years; Gulfport test plot; 1925 series; 12 

 lb. full-cell treatments — BTL (Waterman) data. 



Specific gravity 



Distillation, water free basis, per 

 cent, cumulative 



To210°C 



210-235 



235-270 



270-300 



300-315 



31&-355 



Residue 



Total 



Sulph. residue, gm/100 ml 



Tar acids, gm/100 ml 



Estimated losses, per cent, based on 

 residue increase 



After 7 

 years 



1.059 

 (60/60) 



0.1 

 3.4 

 26.3 

 43.0 

 50.7 

 75.8 

 24.1 

 99.9 



2.4 

 6.5 



55.6 



* To 360°C in original oil analysis, 

 t Above 360°C in original oil analysis. 



X The values for 3, 6 and 7 years are averages of data for 2, 3 and 3 posts, re- 

 spectively. 



Table XXI — Creosote Losses from Southern Pine Posts 

 Analyses of original creosote and of creosote extracted from outer 1 inch 

 zone below ground line of posts in test 4, 5 and 6 years; Gulfport test plot; 1926 

 series; 8 lb. empty-cell treatments — BTL (Waterman) data. 



Specific gravity 



Distillation, water free basis, per 

 cent, cumulative 



to210°C 



210-235 



235-270 



270-300 



300-315 



315-355 



Residue 



Total 



Sulph. res., gm/100 ml 



Tar acids, gm/100 ml 



Estimated losses, per cent, based on 

 residue increase 



1.131 

 (60/60) 



6.6 

 15.2 

 54.7 

 44.1 

 98.8 



3.9 



J6.4 



* To 360*0 in original oil analysis, 

 t Above 360 *C in original oil analysis. 



