p. 56.

Cir. 39--Experiments on the strength of treated timber. By W.K.
Hatt, 1906, pp. 31. Revised edition, 1908.

Bul. 70--Effect of moisture upon the strength and stiffness of
wood. By H.D. Tiemann, 1906, pp. 144.

Cir. 46--Holding force of railroad spikes in wooden ties. By
W.K. Hatt, 1906, pp. 7.

Cir. 47--Strength of packing boxes of various woods. By W.K.
Hatt, 1906, pp. 7.

Cir. 108--The strength of wood as influenced by moisture. By
H.D. Tiemann, 1907, pp. 42.

Cir. 115--Second progress report on the strength of structural
timber. By W.K. Hatt, 1907, pp. 39.

Cir. 142--Tests of vehicle and implement woods. By H.B. Holroyd
and H.S. Betts, 1908, pp. 29.

Cir. 146--Experiments with railway cross-ties. By H.B. Eastman,
1908, pp. 32.

Cir. 179--Utilization of California eucalypts. By H.S. Betts and
C. Stowell Smith, 1910, pp. 30.

Bul. 75--California tanbark oak. Part II, Utilization of the
wood of tanbark oak, by H.S. Betts, 1911, pp. 24-32.

Bul. 88--Properties and uses of Douglas fir. By McGarvey Cline
and J.B. Knapp, 1911, pp. 75.

Cir. 189--Strength values for structural timbers. By McGarvey
Cline, 1912, pp. 8.

Cir. 193--Mechanical properties of redwood. By A.L. Heim, 1912,
pp. 32.

Bul. 108--Tests of structural timbers. By McGarvey Cline and
A.L. Heim, 1912, pp. 1231.

Bul. 112--Fire-killed Douglas fir: a study of its rate of
deterioration, usability, and strength. By J.B. Knapp, 1912, pp.
18.

Bul. 115--Mechanical properties of western hemlock. By O.P.M.
Goss, 1913, pp. 45.

Bul. 122--Mechanical properties of western larch. By O.P.M.
Goss, 1913, pp. 45.

Cir. 213--Mechanical properties of woods grown in the United
States. 1913, pp. 4.

Cir. 214--Tests of packing boxes of various forms. By John A.
Newlin, 1913, pp. 23.

Review Forest Service Investigations. 1913. [Outline of
investigations.] Vol. I, pp. 17-21. A microscopic study of the
mechanical failure of wood, by Warren D. Brush. Vol. II, pp.
33-38.

Bul. 67, U.S.D.A.--Tests of Rocky Mountain woods for telephone
poles. By Norman deW. Betts and A.L. Heim, 1914, pp. 28.

Bul. 77, U.S.D.A.--Rocky Mountain mine timbers. By Norman deW.
Betts, 1914, pp. 34.

Bul. 86, U.S.D.A.--Tests of wooden barrels. By J.A. Newlin,
1914, pp. 12.

REPORTS OF TESTS ON THE STRENGTH OF STRUCTURAL MATERIAL, MADE AT
THE WATERTOWN ARSENAL, MASS.

House Ex. Doc. No. 12, 47th Cong., 1st sess., 1882. Strength of
wood grown on the Pacific slo