LETTER OF TRANSMITTAL 



U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF CHEMISTRY, 

 Washington, D. C., July 81, 1911. 



SIR: I beg to submit for your inspection and approval the results 

 obtained in an investigation made in this bureau by F. P. Veitch and 

 M. G. Donk on the distillation of resinous woods, especially the 

 product wood turpentine. The investigation has been in progress 

 for several years, and although certain phases on which work is being 

 continued are not complete, it is deemed advisable to publish at this 

 time the results so far obtained. Many inquiries are received for 

 information on the subject of resinous-wood distillation, and it is 

 believed that the data herein given will be helpful, and also will 

 further promote the profitable utilization of large quantities of waste 

 wood. 



I recommend that this report be published as Bulletin No. 144 of 

 the Bureau of Chemistry. 



Respectfully, H. W. WILEY, 



Chief of Bureau. 

 Hon. JAMES WILSON, 



Secretary of Agriculture. 



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