98

and extends to Flamborough Head, recursin the islands of Jutland , Zealand, andRugen . That of Dorsetshire re-appears inthe Isle of Wight, and in the same extraor-dinary posture. The Lias, at the mouth ofthe Seine , is covered immediately by greensand, to the exclusion of the various clays,grits, and oolites, which generally dividethem. The same irregularity happens onthe opposite coast at Lyme , and at bothplaces are discovered the remains of fossilcrocodiles.

The hard white limestone and trap, foundon the north coast of Antrim, are preciselythe same as those of the opposite island ofRathlin. The ridge of shistus whichcrosses the south of Scotland, from St.Abb’s head to Portpatrick, re-appears atDonaghadee, in Ireland .

The granite of Iona is found again at thesouth-western extremity of Mull; and thatof the Land’s End, in the islands of Scilly.The sienite and superincumbent killas ofthe Morne mountains in Ireland , are iden-tical with those which compose the Lowrenand CrifFel mountains in Scotland .