The Glaciers of the Alps / Being a narrative of excursions and ascents, an account of the origin and phenomena of glaciers and an exposition of the physical principles to which they are related

by John Tyndall

• Jardin, the, [61], [174].
• Joch, the passage of a, [28].
• Joule, M., on heat and work, [328].
• Jungfrau, the, [11].
  —, evening near, [106].

• Laminated structure, [376], [378], [426].
• [Léchaud], glacier de, [53], [387].
  — — —, motion of, [60], [286]-[288].
• Lenticular structure, [381].
• Light and heat, [223], [239], [241].
  —, undulation theory of, [224].
• Linth, M. Escher de la, [271].
• Liquefaction of ice, [353], [408].
• Liquid flowers, [147], [354]-[358], [424].

• Magnetic force, [144].
• Magnetism of rocks, [140], [143], [145].
• Märjelen See, [101], [119].
• Mastic, Brücke's solution of, [259].
• Mattmark See, [162].
• Maximum motion, locus of point of, [285], [323].
• Mayenwand, summit of, [20], [100], [323].
• Mayer, on connexion of heat with work, [328].
• Measurement of glaciers, [276].
• Mer de Glace, [42]-[67], [86]-[90], [173].
  — — —, dirt-bands of the, [367]
  (seen from Charmoz, [45], [368];
  from Cleft station, [47], [369];
  from the Flégère, [367]).
  — — —, map of, [53], [264].
  — — —, motion of, [275]-[293].
  — — —, winter motion of, [294], [343].
  — — —, winter visit to, [195], [206]-[218].
• Milk, cause of blueness of, [261].
• Mirage, [36].
• Montanvert, [40], [89], [173].
  — in winter, [204].
• Mont Blanc, first ascent of, [68].
  — —, second ascent of, [177].
  — —, summit of, [81], [189].
• Monte Rosa, first ascent of, [122].
  — —, second ascent of, [151].
  — —, summit of, [128], [156].
  — —, western glacier of, [138], [147].
  — —, zones of colour, [154], [238].
• Moraines, [263].
  — of Talèfre, [54], [63], [267], [387].
• Motion of glaciers, [52], [269]-[295], [422].
• Moulins, [362], [424].
  —, depth of, [365].
  —, motion of, [364].

• Necker, letter from, [178].
• Neufchâtelois, Hôtel des, [19], [112], [270].
• Névé ice, [249], [251].

• Oberland, the, visited, [9]-[22]; [92]-[120]; [390].
• Oils, effect of films of, [236].

• Person, M., on softening of ice, [333].
• Pistol fired on summit of Mont Blanc, [82], [83], [224].
• Pitch of musical sounds, [225].
• Planes of freezing, [163], [358], [424].
• Plasticity of ice, Thomson's theory of, [340].
• Polar forces, [4].
• Pressure and cleavage, see [Cleavage].
  — and liquefaction of ice, [340], [408].
  — — veined structure, [404]; [147]-[149], [382]-[394], [412], [425]-[426].
  —, effects of, on boiling point, [408].
  — — — — ice, [405], [409].
  — theory of glacier motion, [346].

• Radiant heat, [105], [239].
• Rays, calorific, [240].
  —, transmission of, [242].
• Redness of sunset, [175].
• Refraction on lake of Geneva, [35].
• Regelation, [347], [351].
• Reichenbach fall, [17].
• Rendu, comparison of glacier to river, [306].
  —, measurements of glaciers, [304].
  —, notice of regelation, [301].
  — on conversion of snow into ice, [301].
  — on ductility, [298].
  — on law of circulation, [300].
  — on motion of glaciers, [305].
  — on veined structure, [301].
  — theory of glaciers, [299].
• Rhone at lake of Geneva, [34], [261].
  — glacier, [20], [100], [323], [386].
  — —, chromatic effects, [21], [238].
• Ridges on glaciers, [42], [55].
• Riffelhorn, the, [133], [141]-[145].
• Rings, interference, [229].
  — round sun, [21], [238].
• Ripples deduced from rings, [400].
• Ripple theory, Forbes on, [398].
  — — of veined structure, [398].
  — waves, movement of, [232].
• River and glacier, analogies between, [281]-[285], [423]; [368].
• Rocks, magnetism of, [140], [143], [145].

• Saas, avalanche at, [164].
• Sabine, Gen., on veined structure, [378].
• Sand-cones, [266].
• Saussure's theory of glacier motion, [52], [296].
• Scheuchzer's theory of glacier motion, [296].
• Seams, white, in ice, [56], [88], [413], [421].
• Sedgwick, Prof., on cleavage, [2]-[5], [390], [431].
• Séracs, [51], [75].
• Serpentine, boulders of, [161].
• Shadows, coloured, [38].
• Sharpe, on slaty cleavage, [5], [432].
• Silberhorn, the, [11].
• Sky, blueness of, [22], [174], [175].
  —, colours of, explained, [257].
• Slate, cleavage of, [1], [430].
• Snow, blue colour of, [29], [132], [203].
  — crystals, [130], [205], [212].
  —, dry, [250].
  — line, [29], [248].
  —, perpetual, [248].
  —, sound of breaking, [202].
  — storm, sound through, [215].
  —, whiteness of, explained, [250].
• Sorby, Mr., on slaty cleavage, [5], [435].
• Sound in a vacuum, [224].
  —, intensity of, [83].
  —, rate of motion of, [226].
• Spectra, interference, [76], [178], [235], [238].
• Spectrum, rays of, [240].
• Stars, twinkling of, [72], [238].
• Stelvio, pass of, [29].
• Storm on Grands Mulets, [185].
  — — Mer de Glace, [210].
• Strahleck, glacier of, [94], [384].
  —, passage of, [93], [97].
• Strata of ice, [136].
• Stratification of névé, [392].
  — — slate, [1], [430].
• Structure, doubts regarding, [44], [92], [389].
  — of ice, [136], [148], see [Veined structure].
• Subjective colours, [37].
• Summary of glacier theory, [422].
• Sun, rings round, [21], [238].
• Sunrise at Chamouni, [39].
  — and sunset, illumination of trees, &c., at, [178], [238].
• Sunset, gorgeous, [184].

• Tables, glacier, [44], [265]-[266].
• Tacul, motion of ice-wall at, [289].
• [Talèfre], glacier of, [43], [61]-[62], [87].
  —, moraines of, [54], [63], [267], [387].
• Temperature, winter, of Alps, [168].
• Theodolite, use of, [275].
• Theory of cleavage, [5].
• Thermometer at Jardin, [174].
  — buried on Mont Blanc, [190].
  — on Finsteraarhorn, [113].
• Thomson, Prof., theory of plasticity, [340].
  — — — — regelation, [352].
• Twinkling of stars, [72], [238].
• Tyrol, the, [23].

• Undulation theory of light, [224].
• Unteraar, glacier of, [18], [265], [388].