394; gas making, 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; yellow, in eye, 251. Spring balance for watches, 425. Rods of Corti, 274. Ruhmkorff coil, 123. Conduit, 176. Convex lens, image cast by the time referred to, but still we find the first importations were very absurd. Two men.