INDEX. 



Torpedo, of the electrical, v, 488 

 Torre del Greco, fate of, i, 383 

 Torricflli, discoveries of, i\ 

 Tarrid :oiie, description of, i, 3 14 j heat 



of, iv, 197 



Tortoise, dest riplion of the land, v, 542 

 7 'imrlwood tinder-box described, vi, 99 

 'J'niirneforfs botanical system, v, 12 

 Tviinnaline, electrical properties of 



the, ii, 272 

 Trade winds, observations on, iv, 185 ; 



account of, v, 207 

 Trajan, the column of, vi, 501 

 Transition, formations on, i, 324 

 Trees, on subterranean, ii, 133, 154, 



158 ; extraneous substances in, v, 



313} on metallic, vi, 326 

 Trent, course of the river, iii, 35 

 Trichoda, description of the, v, 350 

 Trinidad, pitch lake in, iii, 150 

 Tripod, a beautiful, ii, 250 

 Troat, the hot springs at, iii, 1 17 

 Tropical sea winds, iv, 2 1 1 j land winds, 



219 



Tropics, definition of, i, 311 

 Trout, natural history of the, v, 523 

 Tnninii, description of various, vi, 505 

 Tmtbridye, waters agitated .it, ii, 51 ; 



description of,iii, 177} on me spring 



of, 17S 

 Tuiif/urayua, a mountain hi Mexico, i, 



490 



Turf-bogs of Ireland, iii, 2^9 

 Turpentine, various kinds of, v, 172; 



on the oil of, 175 

 Tuteuag, account of, vi, 282 

 Ttciliyht,ott the phenomenon of, i, 188 

 Twinkling of the stars, on the, i, 165 

 Tyclio lirahe, account of, i, 23 

 Tyjihun, derivation of, iv, 216 

 Ulster, gold found in, ii, 327 

 I Isicater, description of^ iii, 244, 258 

 1'nitcd States, mineralogy of, ii, 313 

 i'pas antiar, description of, v, 238; of 



lht- Bt.h. in, 279 



I Yttwa, account of the lake of, iii, 236 

 / 'ranioiti-g, on the observatory of, i, i>4 

 Uranus, discovery of the planet, i, 146 ; 



elements of, 161 ; satellites of, 168; 



on the climate of, 194 

 / ;/, Mr. liis :islroi.omi<Ml observa- 

 tions, i, 132 



l'ii, mountainous situation of, ii, 413 

 Utrecht, situation of, iii, 25 



Vacuna, account of the temple of, iii, 7 ct 

 yiffcuMnip/fbservatioiis on a, i, '^iti 

 Vadinufii, account of the lake, iii, 55 

 \'altt.'.f, lii'srrijition of the, ii, 416 

 Valais, hot baths in the, iii, lG5 

 VnUntine, Basil, UriniMry of, vi, 7 

 Vapour, observations on, iv, 16; on 

 the quantity of, 19 ; on the qualifies 

 of, 129 

 Variation of the magnetic needle, iv, 



377 } observations on, vi, 59 

 Vegetable fossils, cause of, ii, 166; 

 phosphori, vi, 110; petrefactions, 

 account of, 146; poisons, v, 221 

 Vegetables, on marine, i, 240 ; charac- 

 teristics of, v, 1 ; classification of, 5 

 Vegetation, observations on, v. 20 

 Veins in rocks, remarks on, i, 3^7 

 Venice, description of the city of, iii, 

 237 ; manufactory of glass at, vi, 155 

 Ventaroli, description of, i, 368 

 Venus, atmosphere of, i, 46; elements 

 of, 151; observations on, 178; in 

 the climate of, 1Q2 

 Verd, volcanoes of Cape de, i, 468 

 Vermes, classification of, v, 343 

 Verona, curiosities near, ii, J91 

 Vespasian, the Amphitheatre of, vi,501 

 Vessel, on the velocity of a, iii, 364 

 Vestn, discovery of the planet, i, 146 

 Vfsucius, eruptions of mount, i, 334,402 

 Vi'.ftie, M. de, burning mirror of,vi,4G> 

 Vine, natural history of the, v, 70; 



main. :< >< .ii>. nt of, 7 1 

 Vineiftii-ut: in Britain, v, 72 

 Viigini<t, lead mines in, ii, 315; natu- 

 ral bridge in, 439 

 Vistula., descriptiun of the, iii, 26 

 Vitrified mutter, observations on, i,355 

 Volcanic formations, on, i, 326; peak, 

 41; 1 ; materials, 510; shavers, iv, 16 1 

 Volcanoes, on ilie lunar, i, 1*3, 198; 

 general view of, 330 ; Vcsu\ ius, 334, 

 402 ; Etna, 403, 434 ; I.ipari islunde, 

 435; Iceland, 446; Japan, 464 ; 

 Kamtschatkn, 465; Nrv. Hi hri.!-s, 

 466; African island^, Hi? ; St. He- 

 lena, 468 ; Cape dr \Yr.l, i!>.; Ca- 

 naries, 469; Isle of Bourbon, 477; 

 Mexico, 479; New (Jrenada, 485; 

 West Indies, 491 

 Volya, description of the, iii. 

 Volta, on the electricity of, vi, 43 ; hit 

 experiment!!, 47 





