Mr. Hamilton on the Geology of part of Asia Minor, 581 



containing fir trees, occurs at Creekmoor bridge on the north side 

 of Holes Bay. In draining it, the workmen, about four feet from 

 the surface, tapped a spring which flows with great violence and 

 throws up white sand. 



Lytchett. At various places in this parish, peat bogs and buried 

 trees occur, particularly at Bulbury Bay. They are, however, consider- 

 ably above the level of the sea ; but on the north east side of Lytchett 

 Bay, at the extremity of the canal from the clay works, is a subsided 

 peat bog thirty feet thick, containing trees. It rests upon mottled 

 clay, and is overlaid by nine or ten feet of clay and sand which are 

 constantly covered by two feet of water. 



In the pits where the subjacent mottled clay is excavated, springs 

 of great volume burst forth whenever the main body of water is tap- 

 ped, and the author is of opinion that this subterranean stream may 

 have caused the subsidence of some of the peat bogs, in consequence 

 of its undermining action. 



In alluding to the accumulations of mud in Poole Harbour, the 

 author states, that in digging a well in West Street in the town of 

 Poole, a mass of sea- weed was found, with remains of an ancient en- 

 bankment at the depth of six feet, and a furlong from the present 

 tigh water mark. 



Feb. 21.* — A paper " On part of Asia Minor," by William John 

 Hamilton, Esq., Sec. G.S., was read. 



In this paper, the author gives an account of the geological struc- 

 ture of the country from the foot of Hassan Dagh, a few miles S.S.E. 

 of Akserai (lat. 38° 20' N., long, about 34° E.), to the great salt 

 lake of Toozla or Kodj-hissar, and thence eastwards to Csesarea and 

 Mount Argseus. 



The formations, noticed by Mr. Hamilton, are trachytic conglo- 

 merates, considered by him one of the oldest formations of the 

 country ; a system of highly inclined beds of red sandstone, conglo- 

 merates and marls, which rest upon the trachytic conglomerate, 

 and are apparently connected with the saliferous deposits of the 

 country, though the author did not observe any beds of salt in the 

 sandstonef ; a limestone belonging to the vast, calcareous, lacustrine 

 formation of the central part of Asia Minor ; a great system of vol- 

 canic tuffs, trachytes and basalts, apparently of comparative modern 

 origin ; and a grey granite which is newer than the sandstone, as it 

 penetrates and disturbs that formation near Kodj-hissar ; but pebbles 

 of a grey granite identical in composition also occur in the conglo- 

 merate. 



Hassan Dagh, upwards of 8000 feet above the sea, consists en- 

 tirely of trachyte, and trachytic and porphyritic conglomerates, and 

 rises from the eastern termination of a great calcareous plain. 

 Several volcanic cones, composed of trachytic conglomerates and 



• [The Anniversary Proceedings of Feb. 16, will be found in our two 

 preceding numbers, p. 433, 508, et seq.l 



t The extensive beds of rock salt on the borders of Pontus and Galatia, 

 occur in troughs or small basins resting upon the perpendicular edges of a 

 red and brown sandstone conglomerate. 



