INDEX TO VOL. L 



fllKAT LIMIT. 



Ui'AxnTT of heat, 26. 



RADIANCY of gate*, 39. 



lU.l'.ht lirt. addenda On, 38. 

 Radiant krat. Dr. Tyndall on, 39. 

 Radiating power of bodies, 26. 

 Radiating power, Uble of, 37. 

 Radiation and reflection, m affecting 



rlimalr, 31. 

 Radiation of heat, 26. 

 Radiation, terrestrial, produces dew, 26. 

 Radiators and absorbers of beat, 26. 

 Radiaton, good, 28. 

 Reflecting power, Uble of, 37. 

 Reflection of heat. 26. 

 Reflectors, metallic, 27. 

 Reflector*, parabolic, 27. 

 Refraction, double, 28. 

 Refraction of heat, 28. 

 Refraction of light, 28. 

 Refraction produced by water, 28. 

 RepuUion, 15. 

 Rock-tall, effect of, an heat, 29. 



SCOTLAND, temperature of, 30. 



Sea-breezes, cause of, 26. 



Sensible heat, 24. 



Snow, bad conducting power of, 31. 



Soil, absorption by, 31. 



Soil, reflecting power of, 31, 



Spheroidal state of water, 23 



Specific heat, 25. 



Specific heat and atomic weights, 26. 



Specific heat, estimation of, 25. 



Specific heat of bodies, 25. 



Specific heat of gases and vapours, 20. 



'.-: heat of liquids, 26. 



if heat of meUls, 25. 

 Specific heat of water, 25. 

 Specific heat, skeleton Uble of, 25. 

 Specific beat, Uble of, 37. 

 Spectrum, heat, 29. 

 Spontaneous combustion, 15. 



ABERRATION, chromatic, 53*. 



Aberration, spherical, 44. 



Absorption of light, 42. 



Achromatic lenses, 53, 54. 



Achromatic microscopes, 65. 



Achromatic telescopes, 72. 



Achromatism, 53. 



Actinic rays, 57. 



Actinism, 57. 



Air-plates, colours of thin, 51. 



Analyser, the, 81. 



Analysis, spectrum, 55, 166, el itf. 



Animals, eye* of, 49. 



Artificial and solar light, 54. 



Artificial illumination (see separate Index), 



86. 



Astronomical telescopes, 73. 

 Atmospheric refraction, 45. 

 Axes, negative, 79. 

 Azes, optic, of double refracting bodies, 



79. 



Axes, positive, 79. 

 Axis of lenses, 47. 



BAC. for gas, 62. 



Bestall's polariscope, 81. 



Biaxial crysUls, 79. 



Biot's polarising apparatus, 81. 



Birds, ryes of, 49. 



Blowpipe, oxy-hydrogen, 62. 



Bunsen'i and KmlikofTt discoveries, 



55, 1G6. 

 Burning-glasses), 76. 



Sutes of matter canned by heat, 15. 



Steam and its applications, 35. 



Steam-boilers, covered with felt, 22. 



Steam-boiler explosions, 23. 



Steam, boiling by, 36. 



Steam, cause of, 21. 



Steam, drying by, 36. 



Steam employed for heating purposes, 36. 



Steam-enginm, combined, ,'iii. 



Steam-engine, condenser of the, 36. 



Steam-engine, condensing, 25, 36. 



Steam-engine, low-pressure, 36. 



Steam-engine, the, 36. 



Steam-engine, the locomotive, 36. 



Steam, high-pressure, 35. 



Steam, latent heat of, 24. 



Steam-pipes, coated with felt, 22. 



Steam-pipes, radiation of, 36. 



Steam, pressure of, 35. 



Steam, temperature of, 35. 



Steam, uses of, in manufactures, 35. 



Stoves, 32. 



Stoves, gas, 32. 



Stoves injurious to health, 3?. 



Stream, Gulf, cause of the, 30. 



Sulphur, &c., in gas, 32. 



TABLE of boiling-points, 38. 



Table of conducting power, 37. 



Table of elasticity of vapour of water, 37. 



Table of expansion of solids, 37. 



Table of freezing-mixtures, 37. 



Table of latent heat, 37. 



Table of melting-points, 39. 



Table of radiating power, 37. 



Table of reflecting power, 37. 



Table of specific heat, 37. 



Tables of the effects of heat, 37, tt inj. 



Temperature of the earth, internal, 30. 



Temperature, range of, 31. 



Temperature (See Thermometers). 



Terrestrial heat, 30. 



Theories of heat, 13. 



CALORIFIC rays, 49, 57. 



Camera-lucida, the, 60. 



Camera-obscura, the, 59. 



Camera, the, 59. 



Cassegranjan telescope, the, 74. 



Catoptrics, 42. 



Chemical decomposition produced by 



light, 58. 



Chemical rays, 49, 50, 57. 

 Chorord of the eye, 48. 

 Chromatic aberration, 53. 

 Chrometropes, 64. 

 Circular polarisation, 84. 

 Clonds, cause of the colour of, 50. 

 Coddington lens, the, 65. 

 Colour, cause of, 50. 

 Colour, phenomena of, 49. 

 Colour produced by polarisation, 81, 83. 

 Coloured light produced by the prism, 



41, 49. 



Coloured light, waves of, 41. 

 Colours, complementary, 51, 52. 

 Colours, contrast of, 52. 

 Colours, occular defecU respecting, 59. 

 Colours of thin plates of air, &c., 51. 

 Colours, primary, 41. 

 I in)ili-inentary colours, 51, 52. 

 Compound microscopes, 65. 

 Concave lenses (See Lenses). 

 Concave mirrors, 43, ft teg., 74. 

 Construction of lenses, 46, et ley. 

 Contrast of colours, 52. 

 Convergence, 43. 



Thermal changes measured by electricity, 



29. 



Thermo-electric battery, 29. 

 Tliermn.elcctricity, 29. 

 Tliermometers, 17. 

 Thermometer, air, 27. 

 Thermometer, differential, 27. 

 TlitTiiio-multiplicr, 29. 

 Thermoscopes, 27. 

 Thermotics, 13. 

 Trade-winds, cause of, 30. 

 Transmission of heat through bodies, 2?- 

 Tropics, heat of the, 30. 



UNDULATION ef ether, 14. 



Uii'lularory forces, 13. 



Unequal expansion of bodies, 16v 



VAPORISATTON, 20. 



Vapours, cause of, 20. 



Vapours, latent beat of, 24. 



Vapour, pressure of, 35. 



Ventilation and 1 warming, 31. 



Ventilation of apartments, 32. 



Ventilation of the Houses of Parliament, 3t. 



Ventilation, principles of, 23, 32. 



Ventilators, various, 33, 34. 



Vital heat, 15. 



Vitiation of air by animal products, 33v 



Vitiation of air by combustion, 33. 



Vitiation of air, causes of the, 32. 



Volcanoes, 30. 



WALKING on red-hot iron, 23. 



Walls, cooling effect of, 34. 



Warming- and ventilation, 31, 



Warming by steam, 2 j, 35. 



Waves of ether, 13. 



Welding, 19. 



Wind and storm* produced by heat, 27- 



Windows, cooling effect of, 34. 



Wine-coolers, 24. 



Wood, conducting power of, 22, 



SECTION II. LIGHT* 



Convex lenses (See Lenses}. 

 Convex mirrors, 74. 

 Cornea, the, 48. 

 Crystalline lens of the eye, 48V 

 Curved reflectors, 43, 74. 



DALTONISM, 59. 



Debusscope, the, 77. 



Decomposition of light, 4T. 



Dinmagnetism, relation of, to light, 85>- 



I hlli-action of light, 52. 



Dioptrics, 45. 



l)i-|iei>ion> epipnlic, 54. 



Dispersion of light, 49, 53. 



Dissolving views, 03, et teq. 



Divergence, 43. 



Double refraction, 79. 



EFFECTS of light on organised bodies, 



56, et teif. 

 Electric fight (See Index to "Artificial 



Illumination"). 

 Electric light, photographic spectra of 



the, 166, tt ley. 

 Eleetricitr and light, 85. 

 Klliptic reflectors, 45. 

 Kpipolic dispersion, 54. 

 Extraordinary ray, 79. 

 Kye, lenses of the, 48. 

 Eye, the structure of the, 47. 

 Eye-glasses, 65, 72. 

 Eye* of animals, 49. 

 Eyes of birds, 49. 



8<c, aim, following IndrXM to " Artificial Illumination" and " Photography. 



