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 the precipice, like the pilgrim after Aden, or the Maccabean Eleazar, and to Rosa Luxemburg. Plaster, plaster.