PREFACE. xxix 



as fub-aqueous volcanic productions *, nay, 

 many calcareous flates, fuch as thofe at 

 Bolca, Pappenheim, Eichftaedt, Altheim, 

 and Mount Libanon, are, for the fame rea- 

 fon, to be ranked amongft them a circum- 

 ftance not highly favourable to thofe Mine- 

 ralogifts, who, without having made pro- 

 per obfervations, tell us too confidently, 

 that the flratified limeftone, without excep- 

 tion, confifts of decayed and diilolved corals 

 and fea-mells. In refpect to the limeftone, 

 I mall not -for the prefent launch into Che- 

 mi dry, by enlarging upon the hypothecs ; 

 nor mall I dwell on the faltnefs and bitter- 

 nefs of the fea, which may partly be afcribed 

 to limilar fub-marine events ; meaning only 

 to recommend the above enquiries. Thefe, 

 it is matter of fome furprize, to fee hitherto 

 neglected equally with the examination of 

 thofe new i (lands, which, by earthquakes, or 

 by volcanic eruptions, have been raifed from 

 the bottom of the fea. 



I had 







