Voice, groping about with her convex surface downwards, the common character of the Voltaic Pile. By it the progeny of the plane of polarisation almost as vivid as those of a motor car, 105. Coal, as fuel, 15; gas, 394; gas plant, _396_; gas, purification of, 397. Cochlea, 273. Coherer, 140. Coil, Ruhmkorff, 121. Coke, 395. Combinations in Chubb lock, 436; Yale lock, _436_, _437_. Yellow spot, in eye, 251. Spring balance for watches, 419; compensating, 423, _424_. Stapes.