Johnson, Luther Elman. [480].

Sample, John Henderson. [474].

Smith, Albert Mather. [476].

Van der Hoek, Jacobus. [477].

MINING.

"Federal Investigations of Mine Accidents, Structural Materials, and Fuels." Herbert M. Wilson. [190].

Discussion: Kenneth Allen, Henry Kreisinger, Walter O. Snelling, A. Bartoccini, H.G. Stott, and B.W. Dunn, 300.

PILES.

"The Ultimate Load on Pile Foundations: A Static Theory," John H. Griffith. (With Discussion.) [412].