ELOISE GERRY, Microscopist

Forest Products Laboratory RSITY OF WODO

FOREST SERVICE.

WILLIAM B. GREELEY, Forester.

EDWARD A. SHERMAN, Associate Forester.

BRANCH OF RESEARCH.

EARLE H. CLAPP, Assistant Forester in charge.

FOREST PRODUCTS LABORATORY.

CARLILE P. WINSLOW, Director.

SECTION OF TIMBER PHYSICS.

ROLF THELEN, In charge.
ELOISE GERRY, Microscopist.

A Thesis submitted to the Graduate School of the

University of Wisconsin in partial fulfillment of the requirements for the degree of Doctor of Philosophy

ALLEN

L. R. JONES.

GILBERT

This thesis having been approved in respect of

form and mechanical execution is referred to you for judgment upon its substantial merit.

Approved as satisfying in substance the doctor' thesis requirement of the University of Wisconsin:

te

....CE allen

Major Professor

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OCT 26 1933 G321 .6321

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 METHODS OF TUR-
PENTINING,

By ELOISE GERRY, Microscopist, Forest Products Laboratory, Madison, Wis.

Naval stores is the name applied to the products obtained chiefly
by distilling the oleoresin or gum which exudes from living pines
when the wood is wounded. The turpentine and rosin thus obtained

ACKNOWLEDGMENTS.

The writer wishes to express her appreciation of the many courtesies extended to her
at the places visited in Mississippi, Louisiana, and Florida, and particularly to the fol-
lowing for assistance given in obtaining specimens and information on methods and
practices:

The Bogalusa Turpentine Co., especially to Messrs. Adams, Kemp, A. T. Lewis, C C.
Harding, and N. T. Dorsey; Mr. J. P. Fraim, of the Fernwood Lumber Co., Fernwood,
Miss.; Mr. J. F. Payne, Gulfport, Miss.; Mr. J. A. Taylor, of the Gillican-Chipley Co.,
the Union Naval Stores Co., the Imperial Naval Stores Co., Poitevent & Favre, all of
New Orleans, La.; the Consolidated Naval Stores Co., of Jacksonville, Fla., especially Mr.
McGarvey Cline; Mr. G. A. Clark, of Daytona; Mr. D. N. Corbett, of Orlando; Mr. A.
Sessoms; and Mr. W. A. Sessoms, of Bonifay, Fla. Assistance was also generously given
by the organization of the Florida National Forest, especially Capt. I. F. Eldredge,
Supervisor L. L. Bishop, Deputy Supervisor E. R. McKee; also by Mr. Johnson and Mr.
W. N. Hartgrove, of Garniers, Fla.; by Mr. Austin Cary, of the Washington office of the
Forest Service; and by Mr. R. L. Pettigrew, Dr. A. W. Schorger, and Mr. H. F. Wiess, all
formerly of the Forest Products Laboratory staff.

Helpful criticisms and suggestions were also given by Dr. C. H. Herty, editor of the
Journal of Industrial and Engineering Chemistry, and by Prof. C. E. Allen and Prof. J. B.
Overton, of the department of botany of the University of Wisconsin, as well as by mem-
bers of the staff of the Forest Products Laboratory.

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