Part 66

Taylor, on the vibration of strings, 249.

Teaching, its nature, 366 et seq.

Telegraph, the word, 263.

Telescope, 262.

Telestereoscope, the, 84.

Temperament, even, in tuning, 47.

Temperature, absolute, 162; differences of, 205; differences of, viewed as level surfaces, 161; heights of, 174; scale of, derived from tensions of gases, 174.

Terence, 347.

Terms, scientific, 342-343.

Thales, 259.

Theories, their scope, function, and power, 241-242; must be replaced by direct description, 248.

Thermal, energy, 174, 177; capacity, 123, footnote.

Thermodynamics, 160 et seq.

Thermoelectrometer, Riess's, 133, 169.

Thing-in-itself, the, 200.

Things, mental symbols for groups of sensations, 200-201.

Thomson, James, on the lowering of the freezing-point of water by pressure, 162.

Thomson, W., his absolute electrometer, 127, footnote; on thermodynamics, 162; on the conservation of energy, 165; on the mechanical measures of temperature, 174, footnote; on waste of mechanical energy, 175; also 108, 173, footnote.

Thought, habitudes of, 199, 224, 227, 232; relationship between language and, 329; incongruence between experience and, 206; luxuriance of a fully developed, 58; transformation in scientific, 214-235.

Thoughts, their development and the struggle for existence among them, 63; importance of erroneous, 65; as reproductions of facts, 107.

Thread, the individual a, on which pearls are strung, 234-235.

Tides, 283.

Timbre, 37, 38, 39.

Time, 178, 204, 205, footnote.

Toepler and Foucault, method of, for detecting optical faults, 313 et seq., 320.

Tone-figures, 91.

Tones, 22-47, 99 et seq., 212.

Torsion, moment of, 132.