Thames, the, fordable, 95; frozen over, 31, 33, 113; high tide in the, 39, 124, 127; low water in the, 34; the water of the, 230 Thucydides, 7, 199; on epidemics, 215 Thullier, Dr., 101 Thunder, subterranean, 47 Thunder-storms, 38, 41, 43, 46, 47, 54, 66, 105, 116, 118, 145; in London, 34 Tiber, the, overflowed, 83; inundation of the, 30 Tides, a strange phenomenon in the, 111; high, 42, 124, 127 ‘Tigretier,’ 56 Tongue, the black, 173 Topography of Egypt, 196 Torrent, St. Vitus’s, 81 Torrents of rain, 46 Trade and locality, influence of, 179 Treatment of petechial pestilence, 94; of plague, 78; of small-pox, 131; of the venereal disease, 73 ‘Trousse Galante,’ the, 80 Troy, the siege of, 199 ‘True pestilence,’ the, 24 ---- plague in France, 25 Tsincheou, falling of the mountain of, 46 Tully, 150 Tumours in the groin or axillæ, 24 Turks, cemeteries of the, 239 Tyengius, 78, 81 Typhoid epidemic at Mount St. Bernard, 171 Typhomania, 21 Typhus, 142, 146, 151, 155, 156, 173; fever, 149 Ubilis, 15 Unburied dead bodies, 8, 23 Urine as a topical lotion, 5; drinking, 5; washing with, 5 Use of coals forbidden, 55; of linen, 5; of salted provisions, 15 Uses of the atmosphere, 223 Utrecht, the dancing mania at, 42 Valcarcel, 111 Valencia, lazar-houses established at, 33 Valles, 94 Vapour, a filthy smelling, causing pestilence, 49 Vapour baths of the Sætabi, 5 Vapours, gross, 89; poisonous, of the lake Avernus, 4 Variola, 140; introduction of, into America, 71; epidemic, _ibid._ Vegetable kingdom, the, 220 Velilla, the miraculous bell of, 79 Velitræ depopulated, 3 Venereal disease, the, 84; a pestilential fever, 72; cannibals infested with the, 73; guaiacum in, 75; introduction of, into Europe, 72; origin of the, 73; the origin of, attributed to conjunction of the planets, 72; treatment of the, 73 Venetian territory, famine in the, 82 Ventilation, 225, 226 Vestal Virgins, the, 239 Vesuvius, 17; eruption of, 20, 21, 24, 29, 31, 32, 33, 35, 76, 103, 108, 112, 114, 116, 117, 118, 120, 126, 127, 129, 134, 140, 143; description of an eruption of, 165 Vicissitudes of weather, 32 Vienna, earthquake at, 143 Villalba, 4, 5 Villalon, 119 Villanius, 48, 49 Vincente Mut, 60 ---- Ximeno, 72 Violent catarrh, 76 ---- storm, 76 Virulent small-pox, 111 Vitality, light and air and water essential to, 218 Volcanic eruptions, 99 Volcanoes, eruptions of, 32 Vomito negro, the, 140 Vultures, infected places deserted by, 12 War, distresses of, 23; effects of, 66; civil, 116