Pennsylvania, coal beds of Wyoming, _Z. Cist_, iv, 1.^f ----, ---- ---- ----, rocks accompanying, vii, 260. ----, ----, remarks on the properties and economical uses of anthracite, _B. Silliman_, x, 331; --characters, 332; experiments on, 333; uses of, in the arts, 337; mode of burning, 338, 341; comparative value of Lehigh and Schuylkill, 339; price in New York, 340; general qualities of, 343; documents relating to the value of, 346. ----, ----, characters of anthracite, _B. Silliman_, xi, 91; --analysis of the Lehigh by _L. Vanuxem_, 93; directions as to burning, 94; remarks on _M. Bull's_ memoir on the healing power of fuels, 98. ----, coal; value, position, extent, &c., of anthracite, _J. Pierce_, xii, 54. ----, ----, Mauch Chunk, _J. Pierce_, xii, 56; yield of Mauch Chunk beds in 1825, and statistics relating to, 57; navigation of the Lehigh, 58; rations to laborers, 61; Mount Carbon or Pottsville, 63; price of coal, 64; Peter's Mountain, 65; Wyoming beds, 66; Lackawanna, 67. ----, ----, on the bituminous, _J. Pierce_, xii, 69; --use of, in making iron, 73. ----, ---- mines of Belmont on the Lackawanna, _T. Ritter_, xii, 301. ----, ---- on Tioga river, chemical analysis and description of, _W. Meade_, xiii, 32; --the two great coal districts of the state, 35. ----, ---- region of the valley of the Lackawanna and Wyoming, _B. Silliman_, xviii, 308.^f ----, ---- ---- of Mauch Chunk, &c., _B. Silliman_, xix, 1^f, 11; --mine, 12; new mines, 17; Beaver Meadow mine, 19; xx, 163. ----, ---- region between Cumberland and Pittsburg, _S. W. Pomeroy_, xxi, 342. ----, ---- vegetable fibres apparent in the anthracite, _B. Silliman_, xxiv, 173. ----, ---- region of the Monongahela valley, xxix, 60^f, 61, 64.^f ----, ---- ---- of the Conemaugh and Kiskiminitas, xxix, 73, 74.^f ----, ----, remarks on the extent and characters of the bituminous, _S. P. Hildreth_, xxix, 77. ----, ---- field of Carbon Creek, (Bradford coal field) with analyses, _W. R. Johnson_, xxxix, 137. ----, ----, southern, _M. C. Lea_, xl, 370; --various analyses, 373. ----, ----, ----, model of, with notices of geological features, &c., _R. C. Taylor_, xli, 80.^f ----, ----, on the general character, limits, and relations of the beds, _J. Hall_, xlii, 52. ----, ---- formation, _H. D. Rogers_, xli, 177. ----, Beaver Meadow mine, xix, 19. ----, Bethlehem, catalogue of plants near, _J. Wolle_ and _A. L. Hübener_, xxxvii, 310. ----, Blue ridge gap, xix, 6. ----, Carbon Creek, region, _W. R. Johnson_, xxxix, 137. ----, Chester Co., mineralogy of, _G. W. Carpenter_, xiv, 1. ----, Conemaugh and Kiskiminitas regions, xxix, 71.^f ----, diluvial scratches in, _H. D. Rogers_, xliii, 180. ----, Easton, notice of, _B. Silliman_, xix, 5. ----, ----, rare plants of, _L. de Schweinitz_, viii, 267.