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not fnCe ; and the feltfpar only exhibited, at 

 the angles, a beginning of fufion, which 

 made it appear as it were und:uous. This 

 experiment is perfedly agreeable to many 

 others which I made in the furnace on the 

 granites treated of in Chap. XII. We mutl 

 therefore conclude, that this piece of granite 

 was thrown out untouched from fome vol- 

 cano in the ifland ; or, which appears more 

 probable, that it is adventitious to it; for it 

 is to be obferved, that it was not found in 

 the interior part of the ifiand, but on the 

 beach, where it had been beaten, and had its 

 corners fmoothed by the waves. Were I to 

 indulge conjedure, I fhould Incline to fup- 

 pofe it might have been brought by the fea 

 irom Capo Melazzo in Sicily,, or that vici- 

 nity, which is only fifty-four miles dlftant 

 from Felicuda, and where immenfe mafles 

 pf fimilar granite are found*, 



* See Chap. XII. 



CHAP. 



