Absorption of gases in water, 163.
Acceleration of gravity at places,

108.

Atomic heats and atomic weights,
273.

Boiling points, 298, 313.
Critical-point data, 309.
Densities, 123, 150

Dielectric constants, 389
Dispersive powers, 590.

Elasticity, coefficients, 158, 159.
Electric units, 503.

Electrochemical equivalents, 418.
Expansion coefficients, 253, 259,
260, 261.

Fraunhofer lines, 660
Heat conductivities, 287
Heats of combustion, 274

Indices of refraction, 575, 590.
Latent heats of fusion, 291.

Latent heats of vaporization, 301.
Magnetic intensity at places, 341.
Melting points, 288, 313.
Molecular magnitudes, 178, 179.
Moment of Inertia formulas, 94.
Resistivities or specific resistances,
438, 439.

Rigidity coefficients, 159.
Spark potentials, 532.
Specific gravities, 150

Specific heats, 267, 271, 273.
Specific inductive capacities, 389.
Surfaces tensions, 168

Vapor pressures, 296, 297.

Velocity of ions, 420.

Velocities of sound, 190.

Volume elasticity and compressibil-

ity, 158.

Wave lengths of light, 647, 660.
Young's modulus, 159.

Aberration of light, 554.
Aberration, spherical, 571, 593;
chromatic, 599.

Absolute scale of temperature, 262.
Absorbing power for radiation, 320,
322.

Absorption, of gases, 163; spectra,
625; cause of, 629; mechanical,
664.
Acceleration, linear, 15, 16, 17;
in S. H. M., 82; in circle, 75;
angular, 88, 89; of gravity, 60,
108; of moon, 104.

Accommodation of the eye, 609.
Accumulators, 429.

Achromatic, prism, 598; lenses, 599.

Action and reaction, 24.

Adams, 2, 8.

Air pumps, 133-135.

Alloy, magnetic, 353.

Alternating currents, 514; curve of,

516; motors, 520-522.

Archimedes' principle, 118, 127.
Armature, drum, 508; ring, 506;
electromotive force of, 509.
Assumptions of physical science, 3.
Astigmatism, 610.

Atmosphere, potential, 404; pres-
sure, 127; convective tempera-
ture, 280.

Atomic heats, 273.

Atoms, internal energy, 544.
Atwood's machine, 61.
Avogadro's law, 178.

Balances, 38.
Ball on jet, 148.
Balloons, 128.

Barlow's wheel, 469.

Barometer, 125; corrections for, 125,

126.

Battery, cells, 424; voltaic, 409;
primary, 425-427; secondary,
425, 428-431; modes of connect-
ing, 431.

Beams, stiffness of, 160.

Beats, 212; Helmholtz theory of,

236.

Becquerel, 638.

Bells, 231; electric, 480.

Binoculars, prism, 618.

Boiling, 298; boiling points of con-
densed gases, 313.

Boltwood, 544.

Boltzmann, 323.
Bosscha, 189.

Boyle's law, 130; by kinetic theory,

178.

Boys, 105, radiomicrometer, 454.

Displacements, 10; compounded and

resolved, 11, 12.

Doppler's principle, 202; in spec-
troscopy, 630.

Double weighing, 39.

Double refraction, 672, 673.

Drops, formation of, 175.

DuFay, 357.

Dulong and Petit's law, 272.

Dynamics, 9.

Dynamo electric machines, 504;
direct current, 504; alternating
current, 515.

Dyne, 56.

Ear, 234; trumpet, 199.

Earth, mass of, 105; magnetism,

337-343; potential, 396, 404.

Eddy currents, 509.

Edison storage cell, 430.

Efflux of liquid and gases, 144, 145.
Elasticity, 153; of gases, 128; vol-
ume, 155.

Electricity, 356; theories of, 381.
Electrification, 355.

Electrochemical equivalents, 417.
Electrodynamometer, 475.
Electrolysis, 416-419.
Electrolytic interruptor, 497.
Electro magnet, 462.
Electromagnetic, theory, 680; in-

duction, 484, 490; units, 458, 501
Electrometer, 378, 379; capillary,
423.

Electromotive force, 410; of in-
duction, 488; rules for, 493.
Electron theory, 545, 627.

Electrophorus, 368.

Electroplating, 423.

Electroscope, 358, 407.

Energy, 42; potential, 43; kinetic,

43, 65; conservation, 44; avail-
ability, 45; in magnetic field,
495; in fluid stream, 146; in in-
terference, 211.

Equilibrium, of particle, 26; of
rigid body, 30, 38.

Force, electric, law of, 359.
Force, 3, 19; compounded and re-
solved, 25; moment of, 31; unit,
56; in circular motion, 75; in
S. H. M., 82.

Foucault, currents, 509; pendulum,
98; vel. of light, 557.
Fourier's analysis, 208.
Franklin, 357, 381, 403.
Fraunhofer lines, 621, 628.
Freezing, mixtures, 293.
Fresnel, 672, 642.

Friction, 43-47; in fluids, 146.
Furnace, electric, 448.
Fusion, 287-290.