[Footnote 21: “Coal Testing Plant, St. Louis, Mo.,” by R. H. Fernald, Professional Paper No. 48, Vol. III, U.S. Geological Survey, 1906.] [Footnote 22: A report of these tests may be found in Bulletin No. * * *, U.S. Geological Survey.] [Footnote 23: “Illuminating Gas Coals,” by A. H. White and Perry Barker, U.S. Geological Survey.] [Footnote 24: “Gasoline and Alcohol Tests,” by R. M. Strong, Bulletin No. 392, U.S. Geological Survey, 1909.] [Footnote 25: “Washing and Coking Tests,” by Richard Moldenke, A. W. Belden and G. R. Delamater, Bulletin No. 336, U.S. Geological Survey, 1908; also, “Washing and Coking Tests at Denver, Colo.,” by A. W. Belden and G. R. Delamater, Bulletin No. 368, U.S. Geological Survey, 1909.] [Footnote 26: U.S. Geological Survey, Professional Paper No. 48, Pt. III, and Bulletins Nos. 290, 332, 336, 368, 385, and 403.] [Footnote 27: Professional Paper No. 48, and Bulletins Nos. 290, 316, 332, 343, 363, 366, 385, 402, 403, and 412, U.S. Geological Survey.] [Footnote 28: “Peat Deposits of Maine,” by E. D. Bastin and C. A. Davis. Bulletin No. 376, U.S. Geological Survey, 1909.] [Footnote 29: U.S. Geological Survey, Pittsburg, Pa.] [Footnote 30: Chief Explosives Chemist, U.S. Geological Survey.] [Footnote 31: Lieutenant-Colonel, Ordnance Dept., U. S. A.] * * * * * * * * * * * * * * [Errata: [Fig. 3. caption] SAFETY LAMP TESTING GALLERY _text reads “SAFTY”_ [Mine-Rescue Training] experienced in rescue operations and familiar / with the conditions existing after mine disasters _text reads “familar”_ so as to determine, if possible, the progress of combustion (Fig. 1, Plate XVIII). _text reads “Pate XVIII”_ The chemical analyses of the coals _text reads “anaylses”_ ] End of the Project Gutenberg EBook of Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1, by Herbert M. Wilson