Smee Cell

—A voltaic cell originally constructed by Smee in which the negative plate consists of a thin sheet of platinized silver, with an irregular surface tending to prevent the accumulation of hydrogen bubbles and hence retarding polarization. The platinized silver plate is usually attached to a wooden bar, and zinc plates, placed one on each side of it, are kept in position by a metallic cramp pa ing over the top of the bar. A binding screw, pa ed through the wooden bar is attached to the silver plate, and a similar binding screw, on the cramp that holds the zines to the bar. An earthenware containing-ve el is required; the battery is excited by dilute sulphuric acid (7 volumes of water to one of acid). This cell is admirably adapted for electro-depositing 405 Sneak Current. and general galvanic experiments; but it is not suitable for producing electric light, or for intensity coils. It is easily managed, tolerably constant, and requires only one exciting fluid; therefore, a porous cell is dispensed with.