——­:  Specifications and grading rules for Douglas fir timber:  an analysis of Forest Service tests on structural timbers.  Proc.  Am.  Soc.  Test.  Mat., Vol.  XI, 1911, pp. 744-766.

Comparative strength and resistance of various tie timbers.  Elec.  Traction Weekly, Chicago, June 15, 1912.

DAY, FRANK M.:  Microscopic examination of timber with regard to its strength. 1883, pp. 6.

DEWELL, H.D.:  Tests of some joints used in heavy timber framing.  Eng.  News, Mch. 19, 1914, pp. 594-598; et seq.

DOeRR, KARL:  Die Festigkeit von Fichten- und Kiefernholz.  Deutsche Bauzeitung, Berlin, Aug. 17, 1910.  See also Zeitschrift d. ver. deutsch.  Ing., Bd. 54, Nr. 36, 1910, p. 1503.

DUPIN, CHARLES:  Experiences sur la flexibilite, la force, et l’elasticite des bois.  Jour, de l’Ecole Polytechnique, Vol.  X, 1815.

DUPONT, ADOLPHE, et BOUQUET DE LA GRYE:  Les bois indigenes et etrangers.  Paris, 1875, pp. 273-352.

ESTRADA, ESTEBAN DUQUE:  On the strength and other properties of Cuban woods.  Van Nostrand’s Eng.  Mag., Vol.  XXIX, 1883, pp. 417-426; 443-449.

EVERETT, W.H.:  Memorandum on mechanical tests of some Indian timbers.  Govt.  Bul.  No. 6 (o.s.), Calcutta.

EXNER, WILHELM FRANZ:  Die mechanische Technologie des Holzes.  Wien, 1871. (A translation and revision of Chevandier and Wertheim’s Memoire sur les proprietes mecaniques du bois.)

——­:  Die technischen Eigenschaften der Hoelzer.  Lorey’s Handbuch der Forstwissenschaft, II.  Bd., 6.  Kap., Tuebingen, 1903.

FERNOW, B.E.:  Scientific timber testing.  Digest of Physical Tests, Vol.  I, No. 2, 1896, pp. 87-95.

FOWKE, FRANCIS:  Experiments on British colonial and other woods. 1867.

GARDNER, ROLAND:  I. Mechanical tests, properties, and uses of thirty Philippine woods.  II.  Philippine sawmills, lumber market and prices.  Bul. 4, Bu.  For., P.I., 1906. (2d ed., 1907, contains tests of 34 woods.)

GAYER, KARL:  Forest utilization. (Vol.  V, Schlich’s Manual of Forestry.  Translation of Die Forstbenutzung, Berlin, 1894.) London, 1908.

GOLLNER, H.:  Ueber die Festigkeit des Schwarzfoehrenholzes.  Mitt. a. d. forstl.  Versuchswesen Oesterreichs.  II.  Bd., 3.  Hft., Wien, 1881.

GOTTGETREU, RUDOLPH:  Physische und chemische Beschaffenheit der Baumaterialien. 3d ed., Berlin, 1880.

GREEN, A.O.:  Tasmanian timbers:  their qualities and uses.  Hobart, Tasmania, 1903, pp. 63.

GREGORY, W.B.:  Tests of creosoted timber.  Trans.  Am.  Soc.  C.E., Vol.  LXXVI, 1913, pp. 1192-1203.  See also ibid., Vol.  LXX, p. 37.

GRISARD, JULES, et VANDENBERGHE, MAXIMILIEN:  Les bois industriels, indigenes et exotiques; synonymie et description des especes, proprietes physiques des bois, qualites, defauts, usages et emplois.  Paris, 189-.  From Bul. de la Societe nationale d’acclimatation de France, Vols.  XXXVIII-XL.