10.—Bituminous Coal.
Occurs in masses, beds or seams; softer and duller than Anthracite; often a bright pitchy lustre; brittle, showing a slaty or jointed structure rather than curved surface; powder black; burns readily with yellow flame; by roasting forms coke; gravity 1.5 or less.
Value.—Used for fuel and the production of gas, coke, carbolic acid and aniline.
Localities.—Found west of Harrisburg, Pa., in rocks (slates and sandstones) less disturbed than in the Anthracite region. Western Pennsylvania; South-east Ohio; West Virginia; Eastern Kentucky and Tennessee to Tuscaloosa; North-west Kentucky; Illinois; Iowa; Missouri; Kansas; Arkansas; Northern Texas; Central Michigan; Owyhee County, Idaho; Deer Lodge and Gallatin Counties and sixty miles north-east of Bannock, Mont.