190 Dr. Borré’s Notices of Foreign Geology. 
have appeared, the old red and coaly sandstone are more 
like grau wacké, and a sandstone distinguished by the small 
remains of vegetables. Such is the composition of the old 
red sandstone of the northern part of the Alps. 
On the south side of the Alps, porphyries abound under 
the limestones, with the old red sandstone. he Zechstein 
is there separated from the sandstone and alternates with 
the rocks of the coal formation. When the porphyries have 
appeared late, and the old red sand stone presents itself be- 
low the coal, there is a great deposit of red ground or se- 
cond floetz sandstone, as for instance in the Vosges, the 
Hartz, &c. 
In Germany, you find above the old red sandstone, the 
Zechstein more or less compact, porous and magnesian with 
Flustrae, Terebatrule &c. it is truly the magnesian limestone 
of England with the same organic remains. It also contains 
the ferriferous limestone of the Germans and the Hohlenkalk 
ofthe Thuringewald. This limestone exists in France, also. 
Above this rock is the red ground or variegated sandstone, 
it is the common repository of the salt. In the upper part 
there are sometimes beds of oolite belonging to the musehel- 
kalk or second floetz limestone which lies every where up- 
onthisred ground. This formation is characterized by its com- 
pactness and by its encrinites, terebratulites and pectinites, 
it is very abundant in Germany—it is found in the north east 
part of France, at Nevres &c.—it is unknown in England. 
Above the last is the Quadusandstein or third floetz sand- 
stone, which is also wanting in England; it exists also here 
and there in France. It is whitish, yellowish or brownish, 
d sometimes ferruginous; it rarely contains mineral char- 
coal, pit coal, bituminous wood, impressions of monocotyle- 
dons and branches of trees. Pectinites, turbinites, bivalves, 
strombites, and gryphites are often found in it. ve this 
is the Jura limestone or third floetz limestone, the superpo- 
sition is seen in Suabia, Westphalia and France. In Eng- 
land, the Jura limestone includes all from the Lias to the 
Tron sand. Jn the true Jura chain, the second floetz lime- 
stone appears, here and there, under the Jura limestone, aS 
near Basil. The Jura limestone is sometimes divided into 
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