—, peat converted into, xxxiv, 395.

—, specific gravities and combustible qualities of Ohio coals, S. P. Hildreth, xxix, 147.

Coal Mines and Formations, characters and localities of.

Coal in Alabama, bituminous, xxvi, 190.

— on Arkansas river, iii, 41.

— in Connecticut, i, 239; iii, 248; v, 44f; xxxiii, 163.

— in Cuba, J. H. Blake, xlii, 388.

— in England, remarks on the strata, xxxiii, 79.

— —, Prestwich's observations on the alternation of marine and freshwater beds, xxxiii, 80.

— —, Murchison on dislocations in beds, xxxiii, 84.