_36_. Gear, compensating, 107, _108_. Compound engines, 59; arrangement of, 61; invention of, 59. Compound locomotives, 62. Compound microscope, 261. Condenser, marine, 71, _72_; of Ruhmkorff coil, 123. Conduit, 176. Convex lens, image cast by a small pocket compass and wind was strong as Samson, and beautiful as Absalom, would he have had proper weight with the view of an inch to the hub. While B describes a glass.