_Ibid._, Vol.

LXXVIII, 1879, pp.

217-235.
-- --: Experiments on the strength of yellow pine.

_Ibid._, Vol.
LXXIX, 1880, pp.

157-163.
-- --: Influence of time on bending strength and elasticity.
Proc.Am.Assn.for Adv.Sci., 1881.