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HUTTONIAN THEORY. 



459 



ture appears to be but little changed, except by the 

 progrefs of decompofition and of mouldering in- 

 to earth. No decided line can be drawn between 



the antiquity of th 



d the preceding clafs, as 



the I 

 firfl 



may be between the preceding and the 

 In fome inftances, the objeds of this third 



clafs may be coeval with thofe of the fecond 



general, they muft be 



dof 



gin, as they are certainly not preferved in a man- 

 ner fo well fitted for long continuance. 



404. The animal remains of the fecond clafs, are 

 generally found in the neighbourhood of lime- 

 ftone ftrata, and are either enveloped or penetra- 

 ted by calcareous, or fometimes ferruginous 



Of this fort are the bones found in the 



rock of Gibraltar, and on the coafl of Dalmatia. 



The latter are peculiarly marked for their num- 



J concreti, ' ber, and the extent of the country over which they 



matter. 



remams 



are fcattered, leaving it doubtful whether they 

 are the work of fucceffive ages, or of fome fudden 

 cataftrophe that has affembled in one place, and 

 overwhelmed with immediate deftrudtion, a vaft 

 multitude of the inhabitants of the globe. Thefe 



are found in greateft abundance in the 

 iflands of Cherfo and Ofero; and always in what 

 the Abbe Fort is calls an ocreo-JlalaBitic earth. 

 The bones are often in the ftate of mere fplin- 

 ters, the broken and confufed relics of various 



r 



animals, concreted with fragments of marble 



and 



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