S12 Geological Society. 



dykes, which have altered the adjacent rocks into an imperfectly 

 banded jasper. About one mile to the nortli-east of Fouges, Mr. 

 Hamilton noticed a mass of black hornstone, and to the west and 

 north-west, near the water's edge, trappean and amygdaloidal rocks, 

 overlaid by the pumiceous sandstone. 



2. Ritri is situated on the shores of the bay of Erythra?, opposite 

 the island of Scio ; and the geological structure of the neighbouring 

 district consists of red crystalline, apparently stratified trachyte, and 

 of blue or gray, more or less, crystalline limestone, M'ith associatetl 

 sandstone. The two latter rocks are of anterior date to the trachyte, 

 but Mr. Hamilton could not determine their relative geological age, 

 as they appear to be destitute of organic remains. The beds of lime- 

 stone are sometimes vertical. On the shore near the Acropolis the 

 author noticed also vertical strata of indurated shale and jasper, and 

 near the juncture of the trachyte and limestone, to the north of the 

 Acropolis, that the calcareous beds -were much shattered. The two 

 long islands Avhich form the anchorage, are also composed of blue 

 semi-crystalline limestone, without traces of bedding. 



3. Sighajik. — A rich alluvial plain, connecting the harbours of 

 Sighajik and Teos, gradually rises to the eastward, towards the 

 mountainous district, which extends to Smyrna. To the west the 

 plain is separated from the sea by a range of hills composed of 

 thickly-bedded, white, cretaceous limestone, resembhng closely the 

 limestone near Smyrna, described by Mr. Strickland*. In some 

 places it is underlaid by beds of sandstone, and sand containing cal- 

 careous concretions. Just above the ruins of Teos, the limestone is 

 very thinly bedded, with slightly micaceous marly way-boards, the 

 inclination of the strata being 15° to the west; and near the ancient 

 harbour the white limestone is underlaid by a hard, brown, micaceous 

 sandstone, associated with beds of hard nodular limestone, evidently 

 belonging to a much older formation. Low undulating hills of this 

 sandstone bound the plain to the north-west. One of the two insu- 

 lated remarkable hills, seen from the anchorage, also consists of it, 

 the other being composed of vertical beds of blue marble, probably 

 belonging to the same formation. To the nortli-west of the plain, 

 this marble passes into a beautiful breccia, associated with strata of 

 brown sandstone. Mr. Hamilton saw no igneous rocks in situ, but 

 numerous blocks of greenstone are scattered about the country. 



4. Scalcmuova.- — This town stands upon an insulated hill of blue 

 semi-crystalline limestone, part of the western chain of Mount Mes- 

 sogis. The limestone is similar to that which occurs near Ephesus 

 and Mount Prion, where it is associated with beds of yellow mica- 

 ceous sandstone. 



5. Boodroom The castle is built upon an insulated rock of simi- 

 lar limestone, connected with beds of argillaceous shale, of various 

 colours. The hills to the north of the town, and on which are trace- 

 able the walls of the Acropolis of IlalicarnassuS; consist of the same 

 formation, interstratificd at one point with thin projecting bands of 



• Geol. Proceedings, vol. ii. p. 5.'38 ; (or L. and E. Phil. Mag., vol. xi. 

 p. 202) Geol, Trans., 2iid Series, vol. v. p. 393. 



k 



