Part 45

Falling bodies, 204, 215; Galileo on the law of, 143 et seq., 284.

Falling, cats, 303, footnote.

Falstaff, 309.

Familiar intermediate links of thought, 198.

Faraday, 191, 217, 237; his conception of electricity, 114, 271.

Fechner, theory of Corti's fibres, 19 et seq.

Feeling, cannot be explained by motions of atoms, 208 et seq.

Fetishism, 186, 243, 254; in our physical concepts, 187.

Fibres of Corti, 17 et seq.

Fick, his theory of diffusion, 249.

Figures, symmetry of, 92 et seq.

Figures of liquid equilibrium, 4 et seq.

Fire, use of, 264.

Fishes, 306.

Fixed note, determining of a, 377.

Fizeau, his determination of the velocity of light, 55 et seq.

Flats, reversed into sharps, 101.

Flouren's experiments, 272, 290.

Flower-girl, the baskets of a, 95.

Fluids, electrical, 112 et seq.

Force, electric, 110, 119, 168; unit of 111; living, 137, 149, 184; generally 253. See the related headings.

Forces, will compared to, 254.

Foreseeing events, 220 et seq.

Formal conceptions, rôle of, 183.

Formal need of a clear view of facts, 183, 246; how far it corresponds to nature, 184.

Formative forces of liquids, 4.

Forms of liquids, 3 et seq.

Forward movement, sensation of, 300.