J 38 Dr Boue’s Geological Comparative View of' the 
there, we find ourselves in the midst of the greywacke and 
feldspathic breccia, that characterise some districts of Cumber- 
land and Wales. Porphyries, which are wanting in the Pyrenees, 
are found here in abundance, and gneiss rarely ; yet we find again 
at Framont, agranular transition limestone near to, or in, a ferru- 
ginous porphyry, full of small veins of hydrate of iron, which 
bring to our remembrance not only the position of the granular 
limestone of the Pyrenees, but also the limestone, full of small 
veins of the same iron, near the granilie rock of Vic-dessus. (See 
Daubuisson.) The rest of the Vosges is a great deposit of coal- 
sandstone ■, with columns and veins of porphyry , and beds of por- 
phyritic conglomerate , as in the greywacke. Above it comes an 
accumulation of todtliegendes , under the form of a porphyritic 
detritus , and a coarse red conglomerate with quartzose rolled mas- 
ses , &c., as in the Thuringerwald ; and then immediately above 
it, without the zechstein, which is wanting, or slightly represented 
somewhere else, the variegated red quartzose sandstone , with its 
superior marly beds , lies upon the Vosges as upon the cover of a 
house. These upper-beds of the variegated sandstone, contain 
here and there traces of lignite, and impressions of monocotyle- 
dones and ferns (Soultz), and some petrifactions of the shell 
limestone (muschelkalk), which explains the anomaly of the salt- 
deposit of Gallicia and Marmarosch. (See Beudant). 
In the valley of the Rhine , above the shell limestone (muschel- 
kalk), are seen on both sides below Strasbourg, some patches 
of Jura oolites , and even of lias at Buxweiler ; then succeeds 
the plastic clay , with molasse and nageljluh beds, and some 
remains of quadrupeds; then the coarse marine limestone , with 
fresh- water shells in the northern part, and in the southern patches 
of fresh-water limestone (Haguenau Buxweiler), with nearly the 
same organic remains as the South of France, excepting some 
Cyclades and Cerithia, like fresh-water univalves. Great alluvial 
deposits , and accumulations of marl with land-shells, accompany 
the Rhine, and hide, at the base of the Kaiserstuhle, a basal- 
tic group, without crater and coulee, and with very few scoriae ; 
it is an elevated mass, like the trachytic hills and basalts of Eis- 
senach. From a smaller opening have proceeded the rocks of 
Alt Breisach. The chains on the east of the Rhine consist of 
the Black Forest, composed of granite and gneiss, and the Oden- 
