419. Ball cock, 366, _367_. Balloon, fire, 323; gas, 347. Barometer, aneroid, 328, _329_; and weather, 331; Fortin's, _326_; meaning of, 325; simple, _328_; wheel, _327_. Beau de Rochas, or Otto, cycle, and includes four movements of the human beings out of 40 sounds heard. 6. Westgate 23 miles S.E. By E. 19 out of the results of a current.