38 GEOLOGICAL MEMOIRS. 



The richest portion has been worked in a horizontal extent of 4^ 

 fathoms*; it produced 94f centnersf of ore, containing between 

 700 and 900 marks of silver, and 20 to 23 per cent, of nickel. 



The Geistergang during the years 1847 to 1853, inclusive, yielded 

 in total 3249 centners of ore, containing 18660 marks;}; of silver, 

 227 centners of lead, and 2 centners of copper, representing altogether 

 a value of 387143 florins §, besides the value of the bismuth, cobalt, 

 nickel, and uranium not noted at present in the price-lists of the 

 Mining Administration, although, owing to M. Patera's able practical 

 researches II, these substances may in short time acquire such a 

 degree of commercial and industrial value, that the sums obtained 

 for them may completely pay off the expenses of working the silver. 



[Count M.] 



On the Geology q/* Lower Carinthia. By Dr. Peters. 



[Proceedings of the Imp. Geol. Institute of Vienna, Nov. 7, 1854.] 

 In presenting a geological map of the western part of Lower Car- 

 inthia, which he had examined in the summer of 1854, Dr. Peters 

 observed that this portion of the Alps, comprehending an area of 

 46 or 47 Austrian square-miles^, is situated between the masses of 

 crystalhne rocks from among which the Ilochalpspitz rises, forming 

 the central nucleus of this group, and the older crystalline rocks of the 

 Saualpe and Coralpe, ranging N. and S., and is distinguished from 

 the latter by the absence of a central group, by its peculiar and 

 complex system of valleys, and by the character of its vegetation. 



The predominant rock is argillaceous slates, of several varieties, 

 corresponding in strike with those of the Eastern Alps, and undis- 

 turbed by the accompanying, locally intercalated micaceous and 

 gneissic rocks. 



Sedimentary rocks of ancient date, insensibly passing into clay- 

 slate, appear in the S.E. and N.W. parts of the district. As yet 

 they are not known to contain any organic remains, — excepting the 

 well-known fossil plants of the Stangalpe, which belong to the 

 carboniferous formation, — and their age is necessarily undetermined. 



The lower trias occurs only in the S.E. portion. The tertiary 

 formation is represented by lignitiferous plastic clay (Tegel), and by 

 great masses of sand and gravel, occurring even in the highest 

 valleys. The study of these latter deposits throws light on some 

 anomalies observed in the present arrangement of the valleys ; for by 

 their aid several river-courses, especially that of the Gark, may be 



* The fathom (Lachter) used in the mines of Northern Bohemia = 6-069 Vienna 

 feet; 1 Vienna foot= 1*037 Enghsh feet. — Transl. 



t The Vienna centner (100lh.)= 123-46011b. avoirdupois; 3249 centners = 

 401,130-86491b. avoirdupois.— Transl. 



t The Vienna mark (ilb.) = 0-67301b. avoirdupois; 18 660marks = ll-418,8181b. 

 avoirdupois. — Transl. 



§ The Austrian florin = £0-2 sterling (approximative value); 387*143 florins 

 = £38*714 sterling, 6 shillings. — Transl. 



II See also Jarhb. K. K. Geol. Reichsans. 1854, p. 630, &c. 



^ The Austrian mile =4*71422 English miles ; consequently 1 Austrian square- 

 mile = very nearly 22*1 English square-miles. 



