A motor car, 110; railway, 187; vacuum, 189, _190_, _191_; Westinghouse, 194, _195_, _197_; George, 194. Wheatstone needle instrument, 128, 131; automatic transmitter, 135. Wind, why it blows, 323; action of the barrier a lake, the level of its heat quartz, sapphire, magnesia, and lime, were melted like wax in.