the Mnschelkalkj SfC. ' 333 



sandstone, and to be occasionally hidden beneath some 

 fathoms of green sand or chloritous chalk or planerkalk. 

 It begins to appear, in that country, on the frontiers of 

 Silesia, at the Heuscheur, and at an elevation of 2S93 feet 

 above the level of the sea. It extends from thence through- 

 out the north of Bohemia, and its southern limit should not 

 certainly be placed further back than Eypel, Arnau, and 

 Jung Bunzlaumelnik. It still occasionally appears on this 

 side the Elbe, as near Raudnitz, Prague, Bandeis, &c. : 

 some patches are observed further southj in the sands of 

 Konigingratz, and even perhaps in Moravia. 



After having been covered by basalts, and confined be- 

 tween the basalts of the eastern part of the Mittelgebirge, 

 and the primitive rocks and red sandstone of the Riesenge- 

 birge, the quadersandstein extends on both sides of the 

 Elbe towards Pirna, ascending along some valleys of the 

 Erzgebirge, where patches of it are sometimes seen. It 

 extends on the other side into Lusace, and is seen on this 

 side of the granitic mass near Ullersdorf, and in nume- 

 rous localities in Silesia. 



In the great valley between the Erzgebirge, the Thurin- 

 gerwald and the Hartz, it is only known near Gotha to the 

 north of the Seeberg, at Boxstedt, and near Walterhausen, 

 whilst on the north of the Hartz, it abounds near Helmstadt, 

 and forms a nearly continuous Avail from Quedlinburg to 

 Wernigerod ; it is only seen in isolated mounts beyond that 

 to Hildesheim, being much covered by cretaceous deposites, 

 as at Gorlar, Salzbetfurth, and Hildesheim. 



It is found in patches in the upper part of the valley of 

 the Leine, as for example, near Guttersen, &c. it is only 

 observed in Westphalia, where we have already mentioned 

 the great space that it occupies with the oolite marls. It is, 

 seen no more after that on the west, except near Aix la 

 Chapelle, where perhaps a patch exists tolerably well cha- 

 racterized as to the rock and its vegetable remains. 



It begins to shew itself, in the S.W. of Germany, occa- 

 sionally along the Mein, near Schweinfurt, and on the south 

 of Coburg ; it then extends along both sides of the oolite 



