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able of the Harz * mountains, and in theneighbourhood of Vienna .

Granite alternates with gneiss and micaslate on the south b of the Taberg; ' witheurite, or white stone in the Saxon Erz-gebirge.

It rests on mica-slate at Reichenstein d ,in the county of Glatz ; at the foot of theEulengebirge ; along the entire ridge ofthe Riesengebirge ; in Moravia and theTyrol.

It alternates with mica-slate at Luona-

O

guilla in the county of Wicklow, and atDerryclare in Conemara.

That granite frequently alternates withShist, is attested by Pallas c , Soulavie f , LaPeyrouse e , and Saussure. h

* Schubert ’s Geognosie, p. 110.

b Napione in Bergm. Journ. vol. ii. p. 2006.c Raumer’s geogn. Fragmente.d Von Buch’s Landeck translation, p.44 and note.Geogn. Beob. vol. i. p. 37. Schubert ’s Geogn. p. 110.e Helvet. Mag. 175. 2 Pallas Reise, 517. 520.f Soulavie, vol. iii. p. 162.

* La Peyrouse sur les Mines de Fer. 325.h Voyages, § 662 and $676.