Licence: Public Domain Mark
Credit: The museum of science & art / edited by Dionysius Lardner. Source: Wellcome Collection.
Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.
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![Toaldo's observations on the weather in relation to the moon, i. 71 ; errors of, 72. Tombs, pottery deposited in, ii. 115. Touch, fallacies of, i. 87 ; experiment showing it to be a fallacious judge of temperature, 91. Toys, optical, i. 89. Trade-winds, i. 36. Train, mode of connecting carriages in a, i. 175 ; in motion, list of accidents from getting in or out of a, 1S2; leaving the, to be avoided, 184. Trains, all exceptional, dangerous, L 187. Tschirnhausen, experiments of, ii. 152. Turks under Mohammed II., a comet supposed to have presaged the success of, ii. 79. Turning, potters', ii. 181; and mould- . ing combined, 183. Twilight, cause of, i. 16. Undulatory theory of light, i. 195 ; its analogy to hearing, ib. United States, advantage of the faci- lity of inland transport in the, ii. 56 ; extraordinary social and com- mercial condition of. 63. Uranography of Saturn, the author's memoir on the, i. 61. Uranus, weight of the matter of, i. 31. Vapour, weight of, ii. 105 ; of water, ib. Vases, ii. 120 ; found in sepulchres, 121 ; Chinese, found in tombs at Thebes, ] 25 ; enormous magnitude of oriental, 148 ; forms of, ib. ; of Egypt and China similar, 149 ; found in Peru, 150. Vegetables, supposed lunar influence on, i. 118. Velocity of projection of tail of comets, ii. 71. Ventilation of public buildings, ii. 13; necessity for, 204. Venus, distance of, i. 3; rotatory motion of, 13 ; twilight observable in, 19. Versailles railway, accident on the, i. 169. Vienna, manufactory of porcelain at, ii. 156. Visconti, J. G., his death presaged by a comet, ii. 82. Visiun, fallacy of, respecting the sun and moon near the horizon, i. 83 ; various fallacies of, 87. Vital air, ii. 14. Volcanic theory of aerolites refuted, i. 140. Volcanoes, eruptions of, attributed to comets, ii. 79. Voltaic current for analysing water, ii. 110. Ware, coloured figures on common, ii. 172. ■Watching trains, means suggested for, i. 178. Water may be solid, liquid, or vapour, ii. 98 ; colourless and tasteless, ib.; a cubic foot weighs 1000 ounces, ib. ; expansion of, by heat, ib. ; temperature of greatest density, ib. ; freezing point of, ib. ; boiling point, 99 ; never entirely pure, 101 ; hardness of, ib.; when called soft, ib.; not colourless, 102 ; how to be obtained absolutely pure, 103; constituents of, 104 ; composition and decomposition of, 106 ; .experi- ment for producing, from oxygen and hydrogen, 107 ; apparatus for the purpose explained, 108 ; ana- lysis of, 109 ; apparatus for analysis of, 110 ; decomposition of, by iron, 111 ; produced by combustion of hydrogen, 198. Water communication, natural faci- lities for, in the United States, ii. 18. Water goods train, ii. 35. Water panic in London, i. 68. Waves have no progressive motion, i. 200 ; of light, minuteness of the, 203. Weather, changes of the, have no relation to the lunar phases, i. 73. Wedgwood, Josiah, his history, ii. 142 ; effects of his genius and per- severance, ib. ; his character, 143 ; instance of his liberality, ib.; II](https://iiif.wellcomecollection.org/image/b21940654_0449.jp2/full/800%2C/0/default.jpg)