EVALUATION OF WOOD PRESERVATIVES 



147 



Table IV — -Full-Cell Treatment with Penta-Petroleum- 



Creosote in Toluene 

 Relation of variable block density to absorption of treating solution, grams 

 per cc of block volume; density and volume on oven-dry basis. (See Tables V 

 and VI). 



592 



.0726 



,507 



Average 



614 



.501 



Standard deviation 



.0435 



.0616 



.0405 



.598 



.0591 



Coefficient of variability— per cent 



,512 



.0370 



12.26 



8.58 



10.03 



8.08 



9.88 



7.23 



