[Illustration: ENTRANCE TO GILMAN COAL MINE ON THE LINE OF THE SEATTLE, LAKE SHORE AND EASTERN RAILWAY.] [Sidenote: Authorities.] In the Report of Bailey Willis to Professor Pumpelly for the Census Bureau, we have the best account extant of the Carbon River and Green River basins. Mr. Willis spent three years in his examination, assisted by topographical engineers. He made numerous trial-pits and borings with diamond drill, and forwarded samples to Washington City for analysis. Mr. F. H. Whitworth, of Seattle, accompanied me in my excursions, and prepared maps which are filed herewith. Mr. Whitworth has probably more practical knowledge of the Puget Sound coal basin than any one else. A small volume on the Pacific coal field was prepared some years ago by Mr. W. A. Goodyear. And Governor Squire's lucid and intelligent reports contain valuable information upon the coal, and all the other interests of Washington Territory. Governor Semple has also, in his Report for 1887, given us the latest official information. ANALYSES OF REPRESENTATIVE SAMPLES OF WASHINGTON TERRITORY COALS AND LIGNITES. Key for Sites: A Miles City, Dakota. B Newcastle, Washington Territory. C Vein (?) G. R. C. D Vein 33, G. R. C. E Vein (?), G. R. C. F Vein xviii. G. R. C. G Vein ix. G. R. C. H Vein vi. G. R. C. I Vein iii. G. R. C. J Upper Yakima River, Wash'n Ter. K Carbon Station, Wyoming Territory. L Rock Springs, Wyoming Territory. M Wingate Vein, Carbonado. N Vein cxxiii. W. C. O Vein xviii. W. C. P Vein v. W. C. Q Vein i. W. C. R Vein lviii. B. B. C. S Vein xliv. B. B. C. T Vein _d_, Carbon River, W. C. U Skagit River, Washington Territory. V Raton, New Mexico. W El Moro, New Mexico. Abbreviations for final row (Coke): Wls Worthless Exc Excellent B&F Black and Friable Ra Poor Rather Poor