— —, —, in England, iii, 389.
— —, —, at Wilkesbarre, Pa., ix, 165.
— —, upright trees, Nova Scotia, C. Lyell, xlv, 353.
— —, Ohio valley, S. P. Hildreth, xxix, 1, 151.f
— —, marine shells, England, xxv, 199.
— —, freshwater shells, Lancashire, England, xxxiv, 26.
—, origin of, xii, 87; xviii, 321.
—, —, anthracite, xxiv, 172.
—, —, bituminous, xvii, 397.
—, period, probable constitution of the atmosphere during, H. D. Rogers, xlvii, 105.