WARNSDORFF — CARLSBAD. 45 



E. and W. direction ; they are nearly vertical, and terminate at the 

 upper and lower limits of the metalliferous stratum, which, however, 

 does not differ lithologically from the sterile beds above and below 

 it. Compact galena occurs in these veins or fissures in veinules, up 

 to 3 inches [=0*259 English foot] thick, or in isolated irregular 

 masses, sometimes of several feet in diameter. It is imbedded in a 

 brownish calciferous clay, in a friable limestone-breccia, or in a mix- 

 ture of clay and limestone-fragments filling up the above-mentioned 

 fissures. The angularity of the fragments of limestone in the clay 

 and the occurrence of slickensides prove the veins not to have been 

 contemporaneous with the limestone which they traverse. Several 

 such veins are known, running parallel to each other, from S. to N. 

 Most of them do not pass all through the metalliferous limestone, 

 being cut off by faults, throwing them into other strata ; so that the 

 working out of these veins becomes difficult. Molybdenate of lead 

 sometimes accompanies the galena. Carbonate of lead is seldom 

 met with. 



The fossils as yet found in the metalliferous limestone are un- 

 determined species of Rostellaria and Natica, and a few Ammonites 

 of the globosi group, which prove it to be a portion of the Hallstadt- 

 strata or Alpine Muschelkalk. 



The plumbiferous strata in question run uninterruptedly for several 

 Austrian miles* in extent, from the Ursulaberg on the Styrian fron- 

 tier, over the mountain crests of Petzen and Obir, as far as beyond 

 Windiph-Bleiberg ; lead-mines being everywhere worked in them. 



[Count M.] 



On the Geology of Carlsbad, Bohemia. 

 By M. V. Warnsdorff, 



[Proceedings of the Imp. Geol. Instit. Vienna, Feb. 27, 1855.] 



The thermal and acidulated springs of Carlsbad are all situated, as 

 is known, on one and the same line, which is generally called " Hoff's 

 Line," from the late E. A. v. Hoff, who first pointed out its existence. 

 M. V. Warnsdorfff states, that this line is coincident with the vein of 

 hornstone, at the upper or superficial limit of which a new spring was 

 discovered in 1852, at a depth of 6 or 7 yards, beneath a layer of peat, 

 a thick bed of sand (with rolled fragments of gneiss), and a reddish 

 clay, 2 to 3 feet thick. This spring issues partly from the fissures of 

 the vein of hornstone, which is here 3 to 4 feet thick, and partly from 

 the fissures of the adjacent rock. The vein itself runs from S.S.E. to 

 N.N.W., dipping south at 70° to 75°. The vein is bifurcate ; the 

 upper portion is grey, the lower reddish in colour. 



* The Austrian mile ~ 4*714 English miles. 



t M. V. Warnsdorff has previously published some accounts of the geology of 

 Marienbad in Leonhard and Bronn's " Jahrbuch," and in Kratzmann's " New 

 Marienbad Guide ;" and his views have recently been discussed in a paper by 

 Haidinger on " the Baryta Crystals deposited by the Water of the Carlsbad 

 Military Bathing-House Spring," published in the Imp. Geological Institute's 

 ♦' Jarhbuch," 1854, p. 142. 



VOL. XI. PART II. G 



