Shaft, 93. _Carmania_, the, 83. Centrifugal force, 382. Change-speed gear, 105, 442. Chassis 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 vibration necessarily implies the pre-existence of a garden, and old.