58 Dr Boue on the Geography and Geology of 



Serpentine is pretty frequently met with in the transition se- 

 ries of Servia. It occurs in veins on the N. E. side of the 

 Avala hill, among the greywacke slates W. of Vratscha (4 

 leagues from Kragojevacz"), where a quartzose siliceous breccia 

 seems to be connected with it ; and it is also found farther to 

 the W. before reaching the Rudnik group of hills. It is asso- 

 ciated with the same greywacke slate and a fossiliferous lime- 

 stone at the Castle of Kosnik above the Raschina valley ; and 

 it extends into the Uschize district, as well as into the Ratscha 

 valley. But these masses are inconsiderable in comparison to 

 those of the valley of Gratschevatzka-rieka, leading from Bruss 

 to Kopaunik, or rather to a place called Bressetje, where the 

 traveller must sleep the first night, in order to be able to reach 

 the top of the Kopaunik the next day. This small valley pre- 

 sents five most picturesque defiles or passes, four of which are 

 formed by very thick dykes of serpentine and serpentine brec- 

 cia, contained in greywacke with limestones. Caverns occur 

 in the limestone, and some ores of iron are also met with. 



In the upper part of the valley, especially in the part run- 

 ning E. — W. towards Bressetje, I observed the following succes- 

 sion of rocks, viz. slates, serpentine breccia, slaty greyish or 

 reddish limestone running N. E., serpentine, slates, limestone^ 

 slates at the village of Radmono, altered slates, euphoditic ser- 

 pentine breccia, slate, limestone, the same breccia, indurated 

 slate, anthracite slate, yellowish discoloured greywacke, serpen- 

 tine breccia, a kind of schaalstein or brecciated slate with fo- 

 reio^n matter, slate, grey and red limestone, homblendic amyg- 

 daloidal breccia, a kind of very felspathic euphotide, indurated 

 slate, limestone breccia, serpentine breccia, sandstone, red in- 

 durated slate, slates and greywacke, slaty limestone, slates and 

 greywacke, grey gi*anular limestone. This series, in which the 

 breccia is in the form of dykes, reminds one of some of the 

 valleys in the Fkhtelgebirge. 



Serpentine also occurs associated with transition limestone 

 and conglomerate near the Convent of Detschiani, on the west- 

 ern side of the White Drina basin. Near Lapushnik, to the 

 west of the Upper IMittrovitza, the same rock is associated with 

 red jasper, among slates with a thick bed of coarse quartzose 



