Bituminized wood in the recent era, W. M. Carpenter, xxxv, 345; xxxvi, 118.f
— —, partly silicified, Texas, xxxvii, 216.
Bituminous or organic matter in the N. York limestones, L. C. Beck, xlv, 335.
— coal; see [Coal.]
Black lead; see [Graphite.]
Black mountain, Vt., geology of, vi, 7.
Black sea, anal. of waters of, xx, 188.
— —, height of, above the Caspian, xl, 320.
— —, on the shores of, xxxii, 399.
Blacking, preparation of, xiii, 163.