Matteucci, C., on electric currents in the nerves, xlix, 387.
—, on animal electricity, xxi, 157; xxxii, 198; xlix, 388.
—, on the decomposition of metallic salts, xx, 187.
—, influence of heat on magnetism, xxii, 361.
—, on atmospheric electricity, xxx, 376.
Mauch Chunk, river, canal and coal region, B. Silliman, xix, 7.f
—, notice of, xx, 163.
Mauna Loa, Hawaii, character of, xvi, 346.
— — and Mauna Kea, Sandwich Islands, xi, 4.
— —, see farther under [Volcano.]