Dr Boue on the Geography and Geology of 



greatest portion of the crystalline slaty rocks of Turkey. In 

 the first place, it is a remarkable fact, that all those last contain 

 limestone beds, generally of a granular texture, or in the form of 

 dolomites ; and, even as in Greece, these nodular shaped masses 

 are of considerable extent ; as, for instance, in the Karschiaka 

 hill, near Uskub, between that city and Kalkandel, and along 

 the whole range of hills between Trojak and Perlepe. Now, 

 in this last range, a beautiful white dolomite, forming the hill 

 of Kosak and other eminences, is contained in a green talcose 

 mica-slate, with a slight admixture of felspar, and this St Go- 

 thard-like dolomite is in intimate connection with other similar 

 masses of blackish or whitish compact or semigranular lime- 

 stone, which are associated with clay-slate to the east and west 

 of this dolomitic deposit. The greatest plutonic action has been 

 upon this last and the neighbouring slates. 



In the Tschardagh range the same thing is observed. Vast 

 masses of argillaceous slates, as well as chloritic or talcose rocks 

 more or less decomposed, and even sometimes altered and dis- 

 coloured by acid s vapours, or mixed up with ferruginous matter, 

 envelope or include bed-like ovoidal masses of limestone, which 

 is partly granular, partly compact. These last seem to form 

 the summits of many hills, as the Kobelitza near Kalkandel, 

 and present the greatest analogy with the position of many of 

 the limestones of the Pyrenees. I have no doubt that future 

 observers may find in these limestones, in the vicinity of erupt- 

 ed masses, some crystallized minerals like those of the Pyrenees. 

 The quartzose conglomerates have been occasionally changed 

 into quartzite, and those chloritic or talcose rocks, which con- 

 tain little quartz, have been converted into varieties of talcose 

 gneiss, or at least something resembling it. 



In the Karadagh and the hills of Kacsanik, some cipolin or 

 micaceous limestone beds, are to be seen ; and we have already 

 mentioned the occurrence of a great mass or bed of white gra- 

 nular limestone and dolomite in micaceous slates, quartzites, 

 and clay-slates at Kacsanik. 



Granular limestone also occurs in the more altered primary 

 rocks ; those which have been converted into gneiss and mica- 

 ceous and felspathic slates : for instance, between Tagodin or 

 Stiple and Kukurovacz or Kragojevacz, in the Perin-dagh 



