io8 



ILLUSTRATIONS OF THE 



jade, qui etoient tranchees tout auffi nettement 



que les autres *." 



r¥^ 



rh 



defcript 



no doubt accurate 



though it involves in it fomething of theory 



that 

 the ft 



the fradi 

 )ne. Th 



was mad 



by th 



s may indeed b^ 



F J 



ration probably belongs altogel 

 face, and is one w^ith which th 



^ vi^cight of 

 rue ; the ope- 

 ^r to the fur- 

 powers of the 



mineral regions are not diredly concerned. The 



ph 



however, appea 



me, on ev^ry 



fuppofition, very difficult to explain. In the fpe- 

 cimen which I brought from Oban, the fmalleft 

 pieces of ftone are cut in two, as well as the lar- 

 geft. The confolidation and hardnefs of the mafs 

 are very great, and the connedion of the differ- 

 ent fragments fo perfed, that it is no wonder the 

 whole fliould break as one ftone. But ftill, that 

 the fradure ftiould be fo exactly in one plane, 



■t 



and without any fliattering, is not a little enig- 

 matical 5 if it is indeed a fradure, it muft be the 

 confequence of an immenfe impulfe, very fud 

 denly communicated. 



Ki 



Note 



■^ Voyages aux Alpes, torn. iii. § i37i< 



