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seen reposing on muschelkalk, surmounted by lias; and a detailed 

 section at that place is given, in which are specified the beds of red 

 sandstone containing the greatest number of the fossil plants de- 

 scribed by M. Jager. Calamites are mentioned as being found in the 

 lower quarries; and in the upper, certain Equisetaceous plants, which 

 very much approach to the characters of the plants of the lias and 

 oolitic series of England : 2 new species of Saurians (Cylindricodon 

 and Cubicodon of Jager) are also mentioned. The exact range of this 

 formation in the north of Germany is to be found in Hoffmann's 

 new maps. 



The author believes that the upper red and green marls of the En- 

 glish series are the true representatives of the keuper, and that the 

 only group in the red sandstone series of Germany hitherto un- 

 observed in England, is the muschelkalk ; and he invites geologists 

 to attempt to discover the equivalent, however feeble, of that lime- 

 stone formation, by seeking for it as a bed of separation between 

 the upper red marls and the lower new red sandstone of this island. 



Lias. — The lias marls and gryphite limestone, with many identical 

 species of English fossils, are stated to be well developed in Wirtem- 

 berg, the north of Bavaria, Hanover, Westphalia, &c. 



After instituting a close comparison between the fossil contents of 

 the lias of Wirtemberg and that of England, in Saurian and other ani- 

 mal remains, drawn chiefly from the work of M. Jager, the author gives 

 in great detail, a section on the right bank of the Maine at Banz, near 

 Coburg, a spot to which his attention was first directed by M. de Buch, 

 where the beds are very analogous in mineral characters and suc- 

 cession to those of the coast of Whitby, and where the most asto- 

 nishing profusion of fossils has been collected through the indus- 

 try of MM. Theodori and Gezer, all of which now ornament the 

 Ducal museum of Banz. Amongst these are 6 species of Ichthyo- 

 saurus, 5 of which are known in England {Ichthyosaurus tenuirostris 

 being the most abundant) : — Fishes, 6 or 7 genera, (Dapedium, 

 Clupaea,Cyprinus, &c.) — Pterodactylus — Crustacea, 2 species, Ammo- 

 nites, 1 1 species, of which about two-thirds are figured in Sowerby's 

 Mineral Conchology — Belemnites, 12 species, Scaphites, Nautili and 

 numerous other univalves as well as bivalves common to the English 

 lias. Some of the higher beds are described as containing Trochi, 

 Helicinse, and Spiriferse. Pentacrinites Briareus of the English lias 

 is likewise stated to be of common occurrence, and that a species of 

 Fungia, a genus of corals hitherto unobserved in the lias of England, 

 also occurs. 



Inferior Oolite. — The inferior oolite of Germany is next described, as 

 being quite analogous to that of the Hebrides and the coast of York- 

 shire, viz., a great arenaceous formation for the most part highly 

 ferruginous. It contains many characteristic British fossils, and uni- 

 formly caps the lias throughout Wirtemberg, Bavaria, Hanover and 

 Westphalia, and in some parts (near Banz and in Franconia) it 

 passes up into an iron -shot, true oolite (oolitischer eisen-stein of 

 Munster). 



The ferruginous grits of this formation, it is stated, are not to be 



