1823.] the principal Movntain Chains of JRurope, 21'? 



Lindon, near Hanover, and several others between that town and 

 Goslar, especially in the hills called Elbergebirge between Gras- 

 dorf and Unter Elbe. My friend, Prof. Buckland, informs me, 

 that in this tract the chalk forms highly included ridges, like 

 that called the hog's back, near Guildford. There are also seve- 

 ral detached patches of the lower beds of this formation between 

 Goslar, Halberstadt, and Enedlinburg (see Boue). From their po- 

 sition these locaUties should seem to be occupied by outlying 

 masses on the south of the general boundary or this formation ; 

 but Dr. Boue mentions another point, Prenzlow on the Ucker 

 See, in the north of Brandenburg, where it probably appears l?y 

 denudation in the midst of the tertiary formations. . / ' , 



I do not here mention the chalk said to occur near Hatisbdii 

 which must be referred to a distinct basin, (that, namely, extend- 

 ing from the north foot of the Alps to the Bohemer Wald), nor, 

 for similar reasons, the traces of this formation, which, accord- 

 ing to Boue, exist throughout the basin of Bohemia, and even 

 in the valley of the Elbe, near Dresden, placing these as supple- 

 mentary articles at the end of this sketch, of the course of the 

 chalk through the principal European basin. 



In pursuing then the southern boundary of this basin, it doei 

 not appear to have been noticed between those points north of 

 the Hartz to which we have already traced it, and the district on 

 the north of the Riesengebirge, where it reappears in Lusace and 

 Silesia, e. g. on the west of Lawnberg and Lauben, &c. 



(E.) Poland, 



This formation here constitutes a line of hills running parallel 

 to the Carpathians ; it is finely exhibited at Cracow : it contains 

 abundant flints, affords the usual organic remains, and rests on 

 green sand : it was here examined by Prof. Buckland. Hence, 

 passing by Lemberg, it appears to extend into Russia. 



(F.) Russia, 



The chalk is here exhibited according to the map of M. Beu- 

 dant, in several detached points, on the north of the Dneistr to 

 the north-east of Zaleszyky, between the 25th and 28th parallels 

 of long, from London. 



Hills of chalk were noticed by Dr. Clarke at Kasankaiya on 

 the Don, and the town of Bielogorod, signifying the white city, 

 is said to take its name from white hills of the same substance 

 in its neighbourhood. Engelhardt observed chalk, containing 

 its usual flints and fossils, even in the Crimea. 



Mr. Strangways is, however, of opinion, from more recent 

 examination, that the supposed chalk of the Crimea is really a 

 tertiary formation, and that the localities on the Dniestr are the 

 only ones which are well ascertained in Russia. 



No particulars can be gathered of the eastern or north-eastern 

 boundaries of this formation. We may conjecture, however, 



