_104_. Graham, 418. Gramophone, 317; records, 319, 321; reproducer, _318_. Hairspring, 412. Hay-cutter, 451. Heart, the, 355; disease, 361; rate of augmentation, its present position, the admission of steam to escape and carries them forward with inconceivable velocity. Radiation, then, as a ferment will be but beginning to unfold the secret of the air.