HARDWOOD DISTILLATION 223 



gallon for the use of this material in chemical manufactures, but its 

 use is very limited. It is believed that sometime in the future a 

 method will be found for using this wood tar as a basis of creosote on 

 a commercial scale. A good share of our creosote at the present time is 

 made from coal tar and a large part of it is imported. There is no 

 question that sometime in the future this material will be used for the 

 preservation of wooden material, such as ties, poles, mine timber, etc. 



Wood Gas. 



Wood gas is used entirely as a fuel underneath the ovens at the present 

 time. In some localities in Germany and Austria wood gas has been 

 used for illuminating purposes, and it is very possible that at some time 

 in the future this may be used for a much more economical purpose than 

 as a fuel underneath the ovens. This, however, is looking a long way in 

 advance and it is probable that for some time at least it will continue to 

 serve the purpose of fuel along with the wood tar and coal or other fuel 

 brought in to supply the necessary amount of heat. 



BIBLIOGRAPHY 



BROWN, NELSON C. The Hardwood Distillation Industry in New York. The New 

 York State College of Forestry, Syracuse, N. Y. 1916. 



CAMPBELL, C. L. The Wood Distilling Industry. Metallurgical and Chemical 

 Engineering. March, 1910. 



DUMESNY, PAUL and MOVER, J. Wood Products, Distillates and Extracts. Scott, 

 Greenwood & Co. London: 1908. 



FRENCH, E. H. and W'ITHROW, J. R. The Hardwood Distillation Industry in Amer- 

 ica. Ohio State Universtiy, 1914. 



GEER, W. O. Wood Distillation. U. S. Forest Service. Circular 114. 



HARPER, W. B. The Destructive Distillation of Wood, 1912. Industrial Chemistry, 

 PP- 530-544- 



HAWLEY. L. F. and PALMER, R. C. Distillation of Resinous Wood by Saturated 

 Steam, 1912. U. S. Forest Service. Bulletin 109. 



MARTIN, GEOFFREY. The Charcoal and Wood Distilling Industries. Industrial 

 and Maufacturing Chemistry. Crosby, Lockwood & Son. London: 1918. 



Miscellaneous Articles in Chemical Engineer, Chicago. Metallurgical and Chemical 

 Engineering. New York. Chemical Trade Journal, London. Journal of In- 

 dustrial of Engineering Chemistry, Easton, Pa. Journal, Society of Chemical 

 Industry, London, England. Oil, Drug and Paint Reporter, New York. 



PALMER, R. C. Yields from Destructive Distillation of Certain Hardwoods, 1917. 

 U. S. Forest Service, Department of Agriculture, Bulletin 508. 



