—, on the pulverization of calomel, xlvii, 193.
Sound, concentration of, xix, 190.
—, limits to the audibility of, xxii, 374.
—, effect of, on the barometer, xxx, 377.
—, reverberation of, and best buildings for hearing, xxix, 350.
—, velocity of, vi, 394; xvi, 390.
—, waves of, apparatus for illustrating, xlix, 20.f
—, subterranean, x, 377.
—, —, at East Haddam, Ct., xxxix, 336.
—, influence of, on the elephant and lion, x, 186.