—, sympathetic, xviii, 148.
Inking machine, Wood's, xxiii, 103.f
Insanity, B. W. Dwight's cases of, i, 431.
—, connection of civilization with, xxii, 379.
Insects, circulation in, xxx, 186.
—, miscellaneous observations on, J. T. Plummer, xl, 146.
—, a means of protecting trees from, x, 204.
—, method of destroying, xxxiii, 273.
—, on the preservation of, T. Roger, xix, 213.
—, produced, as supposed, by galvanism, A. Crosse, xxxii, 374f; xxxv, 125.f