WH L WV11 H 
UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 1064 
Contribution from the Forest Service 
WILLIAM B. GREELEY, Forester 
Washington, D. C. ▼ August 21, 1922 
OLEORESIN PRODUCTION 
A MICROSCOPIC STUDY OF THE EFFECTS 
PRODUCED ON THE WOODY TISSUES OF 
SOUTHERN PINES BY DIFFERENT METH- 
ODS OF TURPENTINING 
By 
ELOISE GERRY, Microscopist 
Forest Products Laboratory 
CONTENTS 
Page 
The Naval Stores Industry 1 
Purpose of the Investigation 2 
Oleoresin 3 
Structure of Wood of Turpentine Pines 4 
Methods of Study 7 
Process of Turpentining 8 
Results Obtained by Different Methods 12 
Chipping in the Lightwood 31 
Suggestions for Future Practice 33 
Suggestions for Future Research 38 
Summary 40 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1922 
