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mata are chieflj' the same as those of the white chalk, but the univalves, 

 so common in the Faxoe beds, are wanting, while many of the smaller 

 corals which occur in those beds occur also in this upper limestone. 

 The flint of these superior strata is sometimes in continuous layers as 

 in Stevensklint, sometimes in nodules, and differs from the flint in the 

 white chalk in being more opake, and having a less conchoidal fracture. 

 Sometimes it is replacedby a bluish grey stone, composed of silex and 

 lime, and called in Danish " bleger." 



Dr. Beck infers from the organic remains that the chalk of Salt- 

 holm; of the cliffs in Jutland, ranging from Rugaard by Daugbjerg and 

 Monsted, and terminating in the neighbourhood of Hjerm ; as well 

 as the chalk of the south of Thyholm, that resting upon the white 

 chalk in part of Mors and in the north of Thy ; and the chalk of the 

 cliffs of Bulbjerg and the islet Skarreklit belongs to this uppermost 

 bed. 



Upon the chalk in various districts in Denmark is a breccia of an- 

 gular fragments of chalk and flint cemented with carbonate of lime. 

 The chalk hills ofDenmark present generally the same rounded, smooth 

 outline as in many parts of England, with this distinction, that in 

 Denmark they are crowned very commonly with small mammilliform 

 hillocks of gravel, sand, and erratic blocks. As the sandy beds some- 

 times contain shells identical with those now living in the German 

 Ocean, it is evident that the chalk in Denmark has been submerged 

 since the existence of the living species of Testacea. 



In Bornholm, Moen, and Seeland, the strike of the cretaceous strata 

 is dependent on the strike of the most ancient granitic rocks in Scania; 

 but in Jutland it is not parallel to them, and evidently was not caused 

 by the same system of movements. 



In the central parts of Jutland is an extensive formation several 

 hundred feet thick, referred by Dr. Beck to tertiary strata probably 

 older than the erratic blocks. It consists in some localities of white 

 micaceous sand, in which occasionally occur traces of brown coal, and 

 near Skanderberg is a considerable layer of it. In other districts 

 the formation is composed of clay, which also contains mica, flat 

 masses of hydraulic limestone, like the septaria of the London clay, 

 and occasionally a few organic remains, consisting of scales of fishes 

 apparently belonging to the Cyprinidas ; the elytra of beetles, the 

 cases of the larvse of Phrygansea, and an hymenopterous insect which 

 the author has called Cleptis Stenstrupii. In the neighbourhood of 

 Thisted at Thye, the north of Mors and in the island Fiiiir, Dr. Beck 

 observed, in 1 83 1, dislocations which affect equally these tertiary strata 

 and the chalk. 



To the tertiary period belong also the beds discovered by Professor 

 Forchhammer in the island of Sylt, on the western shores of Holstein. 

 Some of the few shells hitherto detected in them Dr. Beck has ascer- 

 tained to agree with characteristic fossils of the London clay, and 

 others, as Volula Lambertii, with shells of the crag. 



To the same older tertiary period the author is inclined to refer the 

 strata containing Valvata, Gyrogonites, &c., detected at Segeberg, and 



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