36 



BULLETIN 607, U. S. DEPARTMENT OF AGRICULTURE. 



Table 14. — Data upon the relative absorptions and penetrations into longleaf pine of 

 five different commercial creosotes. 



Specimen 

 No. 



Aver- 

 age 



number 

 annual 



rings 

 per 



inch. 



Character of preservative. 



Specific 

 gravity 

 atC0°C. 



Weight of 

 specimen 

 directly 

 before 

 treat- 

 ment. 



Preserva- 

 tive ab- 

 sorbed. 



Aver- 

 age 

 longi- 

 tudinal 

 penetra- 

 tion. 



V-l 



19.0 



8.0 

 13.5 

 19.0 



6.0 

 12.5 

 21.0 



5.0 

 13.0 

 20.0 



5.0 

 12.5 

 21.0 



5.0 

 13.0 



Creosote No. 1 containing tar (estimated at 

 about 10 per cent). 



1.0483 



Pounds. 

 3.493 



4.517 



Pounds. 

 0.072 



.107 

 .090 

 .152 

 .292 

 .222 

 .170 

 .249 

 .210 

 .090 



.224 

 .157 

 .076 

 .096 

 .086 



Inches. 

 3. 53 



A-D-8 



4.72 



Average.. 

 V-4 







4. 15 





1. 0475 



3.118 

 3.801 



6.58 



A-D-2 





8.72 











V-7 





1. 0570 



3.120 

 4.291 



7.18 



A-D-10... 





8.66 



Average.. 

 V-5 







7.92 



Creosote containing tar No. 4 (estimated at 

 less than 5 per cent). 



1.071 



3.010 



3.976 



3.80 



A-D-l 



7.60 



Average.. 

 V-8 







5.70 





1.105 



3.078 

 4.828 



3.73 



A-D-3 





5.26 



Average... 







4.50 











Average moisture in specimens about 6 per cent. 



Table 15. — Showing the effect on absorption and penetration when varying mixtures of 

 tar No. 4 and creosote No. 6 are used. 



Specimen 

 No. 



Length. 



Breadth. 



Depth. 



Weight 

 before 

 treat- 

 ment. 



Absorp- 

 tion. 



Preservative used. 



Pressure 



per 

 square 

 inch. 



Time of 

 treat- 

 ment. 



D-l 



Inches. 

 23.05 

 24.20 

 23.15 



Inches. 

 3.50 

 3.55 



3.50 



Inches. 

 1.50 

 1.55 

 1.50 



Pounds. 

 2.590 

 2.780 

 2.610 



Pounds. 



0.130 



.190 



.195 





Pounds. 



Hours. 



E 4 . 





80 



2 



F-5 

















.172 







23.15 



24.20 

 23.05 



3.50 

 3.50 

 3.50 



1.50 

 1.50 

 1.50 



3.027 

 2.69S 

 2.596 





D-2 



.070 

 .166 

 . 138 





E-2 





80 





F 3 



















.125 







14.40 

 24.20 

 23.05 



3.50 

 3.50 

 3.50 



1.50 

 1.50 

 1.50 



1.923 

 2.920 

 2.607 





D-3. 



.057 

 .180 

 .103 





E-6 . 





SO 



2 



F-2... 

















.113 

















Specimen 

 No. 



Area 

 pene- 

 trated. 



Average 

 longitudi- 

 nal pene- 

 tration. 



Number 



of 

 annual 

 rings. 



Depth 

 of hole. 



Preservative used. 



D-l 



Sq. in. 

 10.8 

 19.0 

 13.1 



4.9 

 9.1 



6.0 



14 

 12 

 14 



16 

 12 

 18 



17 

 12 



18 



Inches. 

 1.00 

 .99 

 1.00 



1.00 

 1.00 

 1.00 



1.00 



1.00 



1.00 





E-4 



Creosote. 



F-5 











6.7 







8.4 

 15.1 

 9.0 





D-2 



3.7 



7.0 

 4.0 



80 per cent creosote, 20 per cent tar. 



E-2 





F-3 











4.9 







7. 5 



15.4 



8.0 





D 3 



3.2 



7.2 

 3.5 





E-6 



33-J per cent tar. 



F-2 











4.6 













It was not possible to get enough matched specimens from one stick for the three treatments. Three 

 sticks were used and one specimen taken from each stick for each preservative. 

 Average moisture 8 per cent to 10 per cent. 



