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FLCETZ ROCKS. ftone, or in a very coaly bituminous fhale. It is probable that the mercury mines of the Palatinate and Mexico, occur in the fame formation. Lead- glance and blende occur in very confiderable quantities in the veins that traverfe this, formation in many parts of England. 13. It abounds in the central, northern, and weftern parts of England ; alfo in great quantity in Scotland, on the river-diftrid of the Forth, the river-diftrid of the Clyde, in Ayrfhire, and in lefs quantity in Dumfricsfliire. There are many depofitions of coal in France ; but it is principally thofe in the northern and weftern parts of it, at the foot of the Cevennes, that belong to this formation, as thofe that occur in the fouth of France, at Chaumont, and St Eti enne in Auvergne, are faid to belong to the neweft floetz-trap formation. It appears alfo on both fides of the Rhine, extending, on the one fide, into the Netherlands, on the other, into Weftphalia. In Germany, it extends through Hanover, Franconia, Suabia, Bavaria, Upper Saxony, Silefia, Bohemia, Auftria, and Hungary. In Sweden and Norway, it occurs in very inconfiderable quantity. It oc curs alfo in Spain and Italy. Immenfe quantities of coal have been raifed in China for feveral hun dred years, but it is not known to what formation the coal in that country belongs. Coal occurs in great quantity in North America; but the for mation is not known. 14- Its