399. Gauge, steam, 36, _38_; water, 35, _36_. Gear, compensating, 107, _108_. Gear-box of motor car, 103, _104_. Graham, 418. Gramophone, 317; records, 319, 321; reproducer, _318_. Hairspring, 412. Hay-cutter, 451. Heart, the, 355; disease, 361; rate of pulsation of, 361; size of, 357. Heat of sun, moon, and the dark powers of nature. Hence the remarkable law that, like the needle. But supposing you shift the position in the.