INDEX
Aberration of light, [69], [149], [218]
Absorption, [104]-6
Acceleration, [239]
Actinic rays, [141]
Action at a distance, [96], [174], [176]
and re-action, [20], [251]
Adams' discovery of Neptune, [25]
Aether is matter, [54]-8
is atomic, [59]-[67]
is gravitative, [64]-9
density of, [69], [71], [136], [243]
elasticity of, [74]-7
inertia of, [76], [330]
its motions, [80]
compressibility of, [291], [315]
waves, [79]-[80]
Aetherial basis of matter, [326]
Affinity, chemical, [43]
Aldebaran, [312]
Aluminium, [79]
Ampère, [192]
Ampère's theory of magnetism, [193]
Andromeda, [314]
Annual magnetic variation, [208]
Annular nebulae, [320]
Aphelion of earth, [36]
Arago, M., [321]
Arcturus, [312]
Areas, Kepler's law of, [36]
Asten, Von, [234], [296]
Asteroids, [31]
Atmosphere, [68], [73], [102], [225]
Atom, vortex, [45], [46], [61]
what it is, [43]
electron, [63]
Boscovitch, [61]
hard, [61]
size of, [43]
Attraction, electrical, [2], [286]
of gravitation, [13], [24], [31]
magnetic, [195]
Balance, Torsion, [187]
Bernoulli, [221], [341]
Beta Persei, [308]
Biela's comet, [296]-7
Binary compound, [143]
stars, [25], [309]
Biot, [138]
Boscovitch atoms, [44], [138]
Boyle and Marriotte's law, [76], [103]
Bradley's discovery of aberration, [149]
Bredichin on comets' tails, [302]
Brilliancy of stars, [307], [309]
British Association Report, [57], [59]
Calcium, [79]
Canis major, [307]
minor, [307]
Capella, [312]
Carbon, [48]
Carboniferous period, [115]
Carnot on heat, [116]-18
Cassini, [307]
Cause and effect, [14]
of gravitation, [1], [282]-9
Cavendish experiment, [24]
Centauri, [79]
Centre of gravity, [325]
Centrifugal force, [9,] [13], [15,] [30,] [236]-8
Centripetal force, [9,] [12,] [282]
Cetus, [307]
Chalk, [6]
Challis, Prof., [74], [96], [100], [107], [151], [155], [214], [227], [311]
Chemistry, [47], [336]
Coal, [86], [88]
Clairaut, [297]
Clusters of stars, [314]
Cohesion, [48]
Colour, [138]
Colours of stars, [308]
seven primary, [139]
Comets, [291]
attracted by planets, [298]
condensation of, [292]
Comets and meteors, [297]
short period, [293]-4
long period, [293]-4
tails of, [298]-9
orbits of, [293]
nucleus of, [298]-9
coma, [298]-9
Compressibility of aether, [291], [315]
Condensation of gases, [47]
Conservation of matter, [42]
of energy, [84]
of motion, [92]
Constellations, [307]
Corollary, [15]
Corona Borealis, [309]
Corpuscles, [42], [64], [136]
Corpuscular theory of light, [122]
Correlation of forces, [83]
Coulomb Torsion balance, [185], [187]
Crookes, Sir William, [42], [136], [326], [341]
Current, electric, [163]
magnetic, [192]
Currents, [90]
Curry, Prof., [284]
Cycle of operations, [114], [116]
Cygnus, [307]
Dalton's atomic theory, [42]
Davy, 99, [107]
Day and night, [4]
D'Arrest's comet, [296]
Deimos, [38]
Democritus, [44]
Density of matter, [51]
of aether, [69]
electric, [170]
of earth, [242]
of sun, [27]
of planets, [242]
Descartes, [221]-2, [341]
Dewar, Prof., [47]
Diameter of earth, [29]
polar, [29]
equatorial, [29]
of sun, [280]
of planets, [29]
Dielectric, [168], [175]
Diffusion, [49]
Dip, magnetic, [199]
Distances of stars, [280]
Diurnal variations, magnetic, [209]
Dog star (Sirius), [306]
Donati's comet, [298]
Double stars, [308]
Draco, [307]
Dynamical equivalent of heat, [114]
value of light, [150]
Dynamics, laws of thermo-, [114]-18
Dynamo, [87], [90]
Ear, [120]
Earth, mass of, [235], [242]
a magnet, [196]-8
size of, [29]
rotation of, [219]
orbit of, [276]
periodic time of, [251]
gravity of, [29]
shape of, [29]
distance from sun, [242], [251]
velocity in orbit, [251]
Eccentricity of orbits, [268], [276]
Eclipse, [145], [148]
Ecliptic, plane of, [277]-9
Elasticity, [46]
of matter, [51]
of aether, [74]
Electric current, [154]
potential, [170]
induction, [175]
radiation, [182]
density, [170]
energy, [179]
field, [166], [179]
lines of force, [173]
Electricity, [64], [162]
two kinds of, [175]
positive, [175]
negative, [175]
laws of, [184]
theories of, [162]
Electrons, [136], [163]
Electro-static, [158], [164]
kinetic, [158], [164]
kinetic energy, [217]
magnetism, [192]-5
magnets, [199]
magnetic theory of light, [229]
chemical equivalents, [189], [333]
Elements of matter, [47]
Ellipse, [34]
Kepler's discovery of, [34]
Elliptical nebulae, [320]
Emission theory of light, [122]
Encke's comet, [293], [296]
resisting medium, [228]
Energy, [83], [84]
what it is, [83]
conservation of, [84]
transformation of, [86]
potential, [87]
kinetic, [89], [164]
radiant, [109]
electrical, [179]
and motion, [91]
Engine, Carnot's heat, [116]
Envelopes of comets, [298]
Epicureans, [44]
Equal areas, [36]
times, [36]
Equator, N. and S. Poles, [29]
magnetic, [202]
terrestrial, [29]
Equipotential surfaces, [171]
Equivalents, electro-chemical, [189], [333]
Euler, [123]
Exchanges, theory of, [105]
Experience, [4]
Experiments of Rumford, [98]
of Michelson and Morley, [67], [227]
of Lebedew, [302]
of Nichols and Hull, [153]
of Hertz, [165]
of Faraday, [65], [285]
of M. Faye, [302]
of Joule, [114]
Falling stone, [21], [29]
Faraday, [45], [175], [220]
on matter, [56]
on Lines of Force, [168], [200], [203]-5
on magnetic space, [208]
on gravitation, [287]
on electricity, [332]
on induction, [176]
Faye, M., [111], [302], [319]
Faye's comet, [293], [296]
Field, electric, [179]
magnetic, [199]
Fizeau, [149], [224]
Fluids, [48]
Food, [89]
Forbes, [121]
Force, [16], [19], [90]
centrifugal, [9], [13], [236]
centripetal, [9], [12], [282]
lines of, [200]
Forces, direction of the, [26]
proportion of the, [26]
Foucault, [149]
Franklin, [106]
Fresnel, [75], [131]
Frictionless medium, [17], [131], [136], [224]
Fundamental medium, [54]
Galaxy, [325], [346]
Gaseous nebulae, [313]
Gases, condensation of, [47]
liquefaction of, [47]
kinetic theory of, [49]
Glazebrook, Prof., on aether and gravitation, [22]
Globular clusters of stars, [314]
Gravitation, law of, [61], [65]
universal, [24]
intensity of, [27]
law of proportion, [26]
cause of, [1], [282]
and binary stars, [25]
Gravity, centre of, [325]
Great Bear, [307]
Grove, [83]
Halley's comet, [296]-7
Hamilton, Sir W. R., [247]
Head of comets, [298]
Heat is motion, [98]
a mode of motion, [107]
radiant, [109]
dynamical equivalent of, [116]
effects of, [107]
nature of, [98]
radiation of, [109]
transformation of, [87]
Heat engine, Carnot's, [116]
of sun, [109]
and matter, [100]
and work, [114]
refraction of, [121]
Helmholtz, Von, [45], [86]
Hercules, [257], [271], [307]
Herschel, Sir J., [3], [4], [7], [226], [228], [281], [299], [301], [310], [321]
Sir W., [109], [271]-2, [313]
Hertz, [138], [159], [182]
Hicks, Prof., [13]
Hodograph of planets, [247]
Hot springs, [90]
Huggins, [313]-14
Huyghens, [54], [123], [125], [128]
Hydrogen, [40], [42], [44], [60], [93], [314], [333]
Hypotheses, [3], [338]
Ice, [42]
Identity of heat and light, [119]
light and electricity, [156], [160], [165]
aether and electricity, [331]
Imponderable, [71]
Impressed force, [20]
Impressible aether, [78]
Induction, electric, [174]-5
magnetic, [199]
Faraday's theory of, [175]
Inertia of matter, [52]
of aether, [330]
Intensity of light, [28], [146]
of heat, [28], [113]
of electricity, [184]
of gravity, [28]
Iron, [42]
expansion by heat, [101]
contraction by cold, [102]
Joule, 85, [114]
Jupiter, 26, [68]
mass of, [235]
satellites of, [149], [178]
rotation of, [219]
orbital velocity of, [251], [265]
size of, [235]
distance from sun, [242], [251]
density of, [242]
and comets, [305]
Kant, [317]
Kelvin, Lord, [43], [71], [77], [80], [95], [216], [227]
on aether, [56]-7
on vortex atom, [63]
on compressible aether, [291], [315]
on light, [151]
Kepler's laws, [32]
first, [33], [256]-9
second, [36], [260]-2
third, [37], [263]-5
on vortex motion, [221]-2
Kinetic energy, [89]
electro, [217]
Kirchhoff, [43]
Laplace, [317]
nebular hypothesis, [317]
Larmor, Dr., [22], [44], [56], [63], [93], [163]
on electrons, [284]
on aetherial physics, [22], [327]-9
Lavoisier, [42]
Law of gravitation, [24]
of inverse squares, [27]
Laws of electricity, [184]
of light, [145]
of heat, [113]
of motion, [9], [15], [233]
Lead, [88], [333]
Lebedew, [32], [76], [153]
Le Verrier, [25]
discovery of Neptune, [25]
Leyden jar, [157]
Liebnitz, [223]
Light, [75]
a mode of motion, [122]
corpuscular theory of, [123]
undulatory theory of, [123], [136]
electro-magnetic theory of, [156]
path of a ray of, [144]
intensity of, [145]
reflection of, [136]
refraction of, [135]
aberration of, [149]
composition of, [139]
velocity of, [148]
zodiacal, [277]
transverse vibration of, [130]
Lines of force, electric, [173]
magnetic, [201]-3
Liquefaction of gases, [47]
Liquid air, [47]
Liquids, [48]
Little Bear, [307]
Dog, [307]
Lockyer, [109]
Lodge, Dr., [219]
on aether density, [69]
on aether, [284], [289], [328], [332]
on electric inertia, [330]
on electricity, [64], [69], [284], [285]
on force, [17]
on gravitation, [283]
Lorentz on light, [154]
Lyra, [307]
MacLaurin, [2], [10], [17]
Magnesium, [79]
Magnet, [21]
Magnets, bar, [199]
moving, [211]
Magnetic axis, [202]
field, [199]
lines of force, [200]
shells, [205]
equator, [202]
induction, [199]
variation, [208]
molecules of, [193]
polarity, [194]
Magnetism of earth, [207]-12
of planets, [211]
cause of solar, [211]
Ampère's theory of, [193]
Mars, [68], [79]
a magnet, [196]
rotation of, [219]
size of, [236]
orbital velocity of, [251]
satellites of, [178]
orbit of, [33]
Mass, [27], [53], [187]
of earth, [235], [242]
of planets, [235], [242]
of sun, [190]
Matter, elements of, [40]
properties of, [42], [50]
and motion, [41], [322]
conservation of, [42]
divisibility of, [44]
four states of, [48]
aetherial basis of, [48], [333]
physical constitution of, [334]
Maxwell, J. C., [43], [73], [85], [151], [211]
on physical lines of force, [168], [203]-5, [288]
on aether, [59], [206]
on magnetism, [205]
on electro-kinetic energy, [180], [217]
on aether, [58]
Mayer, [84], [86], [114], [118]
McCullagh, [75]
Mechanical energy, [87]
Medium, Descartes on a, [221]
Kepler on a, [222]
Mercury, [68], [79]
a magnet, [196]
rotation of, [219]
eccentricity of orbit, [33]
mass of, [242]
orbital velocity of, [251]
Meteorites, [95], [118]
Meteors, [31], [85], [118]
Michelson and Morley, [7], [67]
Milky way, [79], [309], [314]
Molecules, [44]
Momentum, [20]
Moon, [61]
Motion of stars, [310]
planetary, [253]
of sun, [274]
of aether, [80]
and work, [95]
modes of, [92], [122], [163]
first law of, [15], [16], [239]
second law of, [19], [244]
third law of, [20], [251]
Multiple stars, [308]
Natural philosophy, [4]
Nebulae and aether, [313]
structure of, [314]
spiral, [322]
annular, [320]
elliptical, [320]
planetary, [321]
spectrum of, [314]
irregular, [319]
Nebular hypothesis, [317]
Nebulous stars, [311]
Neptune, [68]
discovery of, [25]
mass of, [235]
orbital velocity of, [251], [265]
distance from sun, [242]
a magnet, [196]
Newton's coloured rings, [107]
Optics, [72], [98], [122]
letter to Bentley, [2], [96]
Rules of Philosophy, [3]
Principia, [3], [7], [38]
emission theory, [123]
law of gravitation, [24]
atoms, [44]
on aether, [98]
Nichols and Hull, [32], [153]
Ocean, [81], [90]
Operations, cycle of, [114]
Optics, Newton's, [2], [122]
Orbital motions of planets, [266]
Orbit of earth, [33]
of Venus, [33]
Orbits of satellites, [34]
of planets, [33]-4, [266]
moon, [267]
stars, [310]
sun, [270]
Origin of sun's heat, [95]
Orion, [79], [307], [314], [319]
Oxygen, [40], [44], [60], [93]
Parallelogram of forces, [15]
Pendulum, [88]
Periodic times, [37]
Perpetual motion, [93], [220]
Phil. Mag., [58], [67], [71], [73], [74], [80]
Phil. Trans., [58], [62], [64], [75]
Philosophy, Rules of, [3]
Phobos, [38]
Physical lines of force, [203]-6
Pitch of Sound, [105], [120], [139]
Plane of ecliptic, [277]-9
Planetoids, [31]
Planets, minor, [31]
origin of, [240]
orbits of, [33], [266]
electrified bodies, [177]
masses of, [242]
relative distances of, [242]
orbital velocities of, [251]
periodic times of, [251]
Platinum, [48]
Pleiades, [79]
Polarization, [176]
Potential energy, [87]
Potential, electric, [170]
magnetic, [194]
Pouillet, M., [109]
Poynting, [91]
Pressure, aetherial, [181]
Preston, Prof., [283]
Prevost, theory of exchanges, [105]
Primitive impulse, [9], [10], [12], [319]
Principia, Newton's, [3], [7], [38]-9, [122]
Properties of matter, [42]
Quantity of sun's heat, [109]
Query, [18]-[19]
Optics, [72], [122]
Radiant heat, [109]
energy, [115]
Radiation, [104]
Radius Vector, [26]
Rankine, [103]
Rays, actinic, [141]
dark heat, [140]
infra-red, [141]
ultra-violet, [140]
Rontgen, [341]
X, [341]
Rectilinear propagation of light, [144]
of heat, [111]
Reflection, [160]
Refraction, [160]
Relative motion of aether and matter, [224]-6
Resistance to motion, [17]
Resisting medium, [228]
Reversible cycle, [116], [118]
Rings, vortex, [45]
Rival theories, [8]
Rivers, [89]-[90]
Roemer, and velocity of light, [148]
Rotation of earth, [219]
of planets, [219]
of sun, [246]
Rotatory motion, [93]
Rucker, Prof., [59]
Rules of Philosophy, [3]
first, [3]
second, [4]
third, [3], [7]
Rumford, [98]
Running water, [95]
Satellites of Mars, [38], [178]
Jupiter, [149], [178]
Uranus, [254]
Neptune, [254]
Saturn, [26]-7, [68]
mass of, [235], [242]
orbital velocity of, [251], [265]
rotation of, [219]
density of, [242]
a magnet, [196]
satellites of, [178]
Schuster, Prof., [8], [218], [311]
Sirius, [306], [308]-9
Sodium, [43]
Solar system, motion of, [257], [271]
spectrum, [79], [139]
magnetism, [211]
Sound, [75]
waves, [104], [120]
Space, interstellar, [310], [313]
Spectroscope, [47], [79]
Spectrum analysis, [50], [139]
Spiral nebulae, [322]
Stars, fixed, [58]
number of, [11], [306]
binary, [309]
distances of, [280]
magnitude of, [306], [309]
colour of, [79], [308]
motion of, [310]-11
nebulous, [320]
proper motions of, [312]
variable, [307]
double, [308]
clusters of, [314]
orbits of, [310]
are magnets, [307]
Stokes, Sir G., [69], [152], [218]
String, [21]
Sun, diameter of, [280]
constitution of, [79]
a magnet, [164], [198]-9
mass of, [190]
heat of, [109]
motions of, [270]
orbital velocity of, [35]
rotation of, [246]
centre of two forces, [186]
Tails of comets, [300], [304]
straight, [300]
curved, [301]
multiple, [300]
Tait, Prof., [18], [40]-1, [88], [247]
Telescope, [79]
Temperature, [104]-5
Terrestrial magnetism, [207]-12
gravity, [29]
Theory, atomic, [44]
rules for making, [3]
undulatory, [123]
of exchanges, [105]
Thermodynamics, first law of, [87], [114]
second law of, [116]
Thomson, J. J., Prof., [43], [326], [335]
Tidal water-power, [88]
Tides, [89], [96]
Torsion balance, [185]
Trade winds, [96], [249]
Transformation of energy, [86]
of motion, [93]
Transverse vibration of light, [130]
Tuning-fork, [104]
Tympanum, [120]
Tyndall on radiation, [104], [106]
on light, [71]
on Lines of Force, [174]
on aether, [77]
on atoms, [106]
on aether waves, [112]
Ultra-violet rays, [140]
red rays, [140]
Unity of universe, [322]-9
Universal gravitation, [24]
aether, [58]
Universe, [313], [322], [347]
Uranus, [68]
mass of, [235]
density of, [242]
orbital velocity of, [265]
a magnet, [196]
Ursa Major, [307]
Minor, [307]
Vapour, [49]
Variation, magnetic, [209]-11
Velocity of light, [148]
of electric waves, [182]
of heat waves, [148]
of falling bodies, [21]
of wave motion, [76]
Velocity, angular, [250]
Venus, [33], [68], [79]
a magnet, [197]
mass of, [235]
rotation of, [219]
orbital velocity of, [251]
periodic time of, [251]
Vibration, atomic, [75]
Vibrations, transverse, [130]
longitudinal, [130]
of sound, [123]
Vibratory motion, [91]
Vogel, Prof., [308], [312]
Vogt, Prof., [332]
Volume of sun, [27]
Von Asten, [234], [296]
Vortex theory, [92], [337]
motion, [221]-4
atom, [93], [126], [337]
rings, [125], [337]
Vortices, molecular, [103]
Water waves, [124]
currents, power of, [95]
composition of, [141]
power, [88]
Wave front, [128]
motion, [124], [160]
Wave lengths, [120]
envelope, [112]
Waves, chemical, [141]
sound, [104], [120], [124]
light, [126]
heat, [141]
electric, [159]
spherical, [112]
electro-magnetic, [165]
Weight, [29], [69], [84]
variation of, [29]
pound, [30]
Whewell, [3], [221]
Winds, [81], [90]
energy of, [90]
trade, [225]
Work, [96]
and energy, [84]
from heat, [116]
Young, Thomas, [54], [64], [67], [123]
on aether, [58]
fourth hypothesis, [70]
Prof., of America, on electric space, [166]
Zinc, [88]
Zodiacal light, [277]-9
Richard Clay & Sous, Limited, London & Bungay.