Part 68

Verstandesbegriffe, 199.

Vertical, perception of the, 272, 286 et seq.; symmetry, 389.

Vertigo, 285, 290.

Vestibule of the ear, 300.

Vibration, 22 et seq.

Vibration-figures, 91.

Vinci, Leonardo da, 278, 283.

Violent motions, 225.

Virtual velocities, 149-155.

Visibility, general conditions of, 312.

Vision, symmetry of our apparatus of, 96. See Eye.

Visual nerves, 96.

Visualisation, mental, 250.

Volt, the word, 343.

Volta, 127, footnote, 134.

Voltaire, 260.

Voltaire's ingènu, 219.

Vowels, composed of simple musical notes, 26.

Wagner, Richard, 279.

Wald, F., 178, footnote.

Wallace, 216.

War, and peace, reflexions upon, 309, 335 et seq.

Waste of mechanical energy, W. Thomson on, 175.

Watches, experiment with, 41; in a mirror, 93.

Water, jet of, resolved into drops, 60; free, solid figures of, 8; objects reflected in, 94, 191; possible modes of measurement of, 170.

Watt, 266.

Wealth, the foundation of, 198.

Weapons, modern, 335.