Bessel, F. W., parallax of star 61 Cygni, xxxvi, 200.
—, on the U. S. coast survey, xvi, 225.
—, on the astronomical clock, xliv, 160.
Bingham, H., fall of meteorites at Sandwich Islands, xlix, 407.
Bischof, G., origin of quartz and metalliferous veins, xlix, 396.
Blake, E. W., on the manufacture of steel, xvii, 111.
Bloodgood, S. D., on halos, xx, 297.
Boethor, E., obituary notice of, v, 180.
Bolca, Mount, geology and fossil fish of, iii, 224; xiii, 255.f