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KIDDER, F.E.: Experiments on the transverse strength of southern and white pine. Van Nostrand's Eng. Mag., Vol. XXII, 1880, pp. 166-168.

——: Experiments on the strength and stiffness of small spruce beams. Ibid., Vol. XXIV, 1881, pp. 473-477.

——: Experiments on the fatigue of small spruce beams. Jour. Franklin Inst., Vol. CXIV, 1882, pp. 261-279.

KIDWELL, EDGAR: The efficiency of built-up wooden beams. Trans. Am. Inst. Min. Eng., Feb., June, 1898.

KIRKALDY, WM. G.: Illustrations of David Kirkaldy's system of mechanical testing. London, 1891.

KUMMER, FREDERICK A.: The effects of preservative treatment on the strength of timber. Proc. Am. Soc. Test. Mat., Vol. IV, 1904, pp. 434-438.

LABORDÈRE, P., and ANSTETT, F.: Contribution to the study of means for improving the strength of wood for pavements. Proc. Int. Assn. Test. Mat., 1912, XXIII4, pp. 12.

LANZA, GAETANO: An account of certain tests on the transverse strength and stiffness of large spruce beams. Trans. Am. Soc. Mech. Eng., Vol. IV, 1882, pp. 119-135. See also Jour. Franklin Inst., Vol. XCV, 1883, pp. 81-94.