–mode of manufacturing, 74.
—, — — of Belmont coal mines, xii, 302.
—, — —, analysis of, W. R. Johnson, xxxviii, 383; xxxix, 142.
—, Lackawanna region and coal, J. Pierce, xii, 67.
—, — ibid, Belmont, T. Ritter, xii, 301.
—, Laurel Mountains, xxi, 346.
—, Lehigh coal and navigation company, xxiv, 173.
—, Lehigh coal, analysis of, xl, 373.
—, Lehigh river, character of, J. Pierce, xii, 59.
—, Mauch Chunk and vicinity, xii, 56, 60.