INDEX. ms 
PAGE 
Tin, mode of smelting it in Cornwall and Devonshire . 358 
Tinstone , found in granite, in Ireland . . . . 135 
Torre del Greco , observations on substances found in it . 9 
Tosna , description of its banks ... , 445 
Toxova , hills and lakes of, described ..... 447 
Transition rocks , tracts of them in Ireland described . . 220 
Trap formation, some of the rocks of the Island of Antigua 
supposed to belong to it . . . , . . 468 
occurs in Madagascar ..... 477 
i n New South Wales .... 480 
in the Isle of Man .... 496 
— in the Lickey hill . . . . . 510 
in the east of Ireland .... 272 
Trilobites , numerous in the Pleta limestone . . . 418 
Tubes , vitreous , found at Drigg in Cumberland . . 617 
Tufa , calcareous, in the Neva ..... 438 
volcanic in the hills of Badacson .... 8 
Vegetable impressions, in slaty clay . . . . . 291 
— in sandstone ..... 293 
Veins of basaltic greenstone in the hill of Szigliget in Hungary 6 
metalliferous, in granite 200 
in clay-slate . , . . . 207 
of Copper, Mucrus mine, Killarney . . . , 597 
of basalt in granite. Cape of Good Hope . . . 616 
Vine, James, Esq. Notice on a method of hardening gypsum 622 
Voxa river, described ....... 340 
Warburton, Henry, Esq. Notice concerning volcanic chro- 
mate of iron . . . . * • * 616 
Water-courses in Shropshire, heights of ... 44 
Weaver, Thomas, Esq. Memoir on the geological relations 
of the east of Ireland . . . . * • H7 
Webster, Thomas, Esq. on the geognostic situation of the 
Reygate stone, and of the fuller’s earth at Nutlield 
Vol. V. 4 p 
353 
