—, eruption of, August, 1834, xxviii, 199.
—, —, April, 1835, xxviii, 340.
— and the Solfatara, xlvii, 182.
Vibrating dams, E. Loomis, xlv, 363.f
— —, time of vibration calculated from the dimensions of, E. Loomis, xlv, 373.
Vibration, effect of, on the colors of the light from different stars, x, 188.
— of glass, movements in water produced by, xxx, 192.
— of railways, xxx, 382.
— of a mercurial pendulum, G. Baker, xlviii, 156.
Vico, P. F. de, comet of, xlviii, 402.