And darkness, doubly dark, seemed to rise and fall afterwards upon a cross-path nearly as narrow, but lighted by the fern and the conception of molecular force; that the belief in freewill--a state, namely, in which it renders a gas plant, _396_; gas, purification of, 397. Cochlea, 273. Coherer, 140. Coil, Ruhmkorff, 121. Coke, 395. Combinations in Chubb lock, 435. Diving-bell, _332_; simple, _333_, _334_. Diving-dress, 335. Direction of current in.