— —, with grasshopper's legs, J. W. Bailey, xxxi, 292.f
— ignition of gunpowder, R. Hare, xxxvii, 269.
— induction, J. P. Emmet, xxvi, 23.f
— lamp, an improvement in, by Dr. J. Cutbush, ii, 332.
— light, transmission of, through metals of different conducting powers, J. Thomas, xxxiv, 205.f
— —, daguerrotype experiment by, B. Silliman, Jr. and W. H. Goode, xliii, 185.
— multiplier, see [Galvanometer.]
— music, production of, C. G. Page, xxxii, 396; xxxiii, 118.
— phenomenon, attending the soldering of water pipes in N. York city, xvii, 194.
— protection by the contact of heterogeneous metals, xvi, 263.