"Pressure, Resistance, and Stability of Earth." J.C. Meem. (With Discussion.) [352].

BUILDING STONE.

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

CEMENT.

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

CLAY.

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

COAL.

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

CONCRETE.