♦UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 1003 



Contribution from the Bureau of Chemistry 

 W. G. CAMPBELL, Acting Chief 



And the University of Idaho, A. H. UPHAM, President 



Washington, D. C. 



December 5, 1921 



THE DISTILLATION OF STUMPWOOD 



AND LOGGING WASTE OF WESTERN 



YELLOW PINE 



By 



M. G. DONK, Assistant Chemist 

 Leather and Paper Laboratory, Bureau of Chemistry 



C. H. SHATTUCK, Professor of Forestry, and W. D. MARSHALL 

 Research Fellow, Forestry Department, University of Idaho 



CONTENTS 



Page 



Importance of western yellow pine . . 1 



Distribution of western yellow pine . . 2 



Purpose of investigation • . . 13 



Taking samples 15 



Distillation of samples 22 



Crude products of retort distillation . . 31 

 Products obtained in refining crude 



turpentine 37 



Calculation of yields of (refined turpen- 

 tine and pine oil . . 41 



Commercial distillation processes ... 43 



Page 

 Feasibility of distilling western yellow 



pine 46 



Relation of wood distillation to land 



clearing 51 



Small, semi-portable wood-distilling 



plants 53 



Use of oil for ore flotation 54 



Refining crude wood turpentine .... 56 



Summary 67 



Literature cited 69 



WASHINGTON 

 GOVERNMENT PRINTING OFFICE 



1921 



