55 



impregnated respectively with the whole oil from which the 

 given fraction has been removed, and the whole oil having the 

 same fraction added to it. 



b. Cooperation with the Forest Products Laboratory of 

 the U. S. Forest Service in the experimental work which is 

 being carried on at Madison, Wis-, by its creosote chemist, 

 Mr. Ernest Bateman, in the determination of the solubility 

 partition of certain constituents of creosote (with reference to 

 solution in the whole oil as compared with water), and of the 

 toxicity of these constituents in varying concentrations in 

 "barren oil," or the non-toxic portion of creosote oil. 



2. Determination of the laws governing both the absorption and 

 adsorption of creosote in wood, where the wood is exposed to air. This 

 experiment will also be used to determine, so far as possible, the na- 

 ture and extent of the loss by selective evaporation of creosote oil 

 from wood when exposed in air. 



3. Determination of the laws governing the loss of absorbed (free) 

 and adsorbed (fixed) creosote components from wood when exposed 

 in salt water. 



4. An investigation of the variation in composition of creosote 

 oil in wood with varying depth of penetration. 



5. Investigation of certain inorganic inhibitants or poisons. 

 scJtt'tliilc /. The experimental test timbers indicated for l,a. are 



of rather large size, designed for exposure in Bay waters under as 

 nearly service conditions as possible. Five, and in some cases six, 

 pieces were subjected to the same treatment, one each for four different 

 stations in the Bay, with one or two for laboratory use. There were 

 sixteen different treatments, which were synthesized according to the 

 following Table: 



1. Fraction A (210-235C) 



2. Fraction B (235-315C) 



3. Fraction C (315-355C) 



4. Fraction D (Residue above 355C) 



5. Whole creosote oil. 



6. Whole oil + fraction A. 



7. Whole oil + fraction B. 



8. Whole oil + fraction C. 



9. Whole oil + fraction D. 



10. Whole oil fraction A. 



11. Whole oil fraction B. 



12. Whole oil fraction C, 



13. Whole oil fraction D. 



14. Whole oil tar acids. 



15. Fraction D (repeated). 



16. Oil tar distillate. 



