i« DESCRIPTION of the 



In purfuing my refearches towards the fummit of Mount Ba- 

 toc, I proceeded up the bed of a torrent, which, after heavy- 

 rains, dafhes down the immediate fide of that mountain. In this 

 bed, the blocks of micaceous fchiftus and of porphyry, (which I 

 had feen fo abundantly fcattered among the hills that I had jufl: 

 left), totally difappeared, and no outlyers of any kind were to be 

 feen, excepting fome granites, which were fcattered in large 

 maffes ; and in every part, where the torrent had carried off 

 the fuperincumbent foil, the granite was to be feen in folid 

 rock. 



In my progrefs towards the fummit of this mountain, I fell 

 in with a large face of the native granite rock expofed to the eye. 

 By the cracks in this face being in long- extended horizontal 

 lines, it had at firft the appearance of being ftratified ; but upon 

 a nearer and more minute examination, I found that it was not 

 ftratified, and that the cracks which gave it that appearance were 

 only fuperficial. 



Around this face were fcattered large blocks of granite, 

 which were moflly in oblong fquare fhapes. 



Soon after palling this precipice, I gained the fummit of the 

 mountain, which, though not very highly elevated, is in this 

 part of the chain the highefl of the central range. It is about 

 3465 feet above the level of the fea ; and is entirely compofed of 

 a coarfe-grained granite, in which fhorl fometimes occurs ; and 

 its felfpar is very generally cryftallized. 



Having here finifhed the extent of my intended invefliga- 

 tion, I beg fto be permitted to add, that the line which I have 

 here given the defcription of, has been traced with much atten- 

 tion, and the true pofition of each foflil has been mofl fcrupu- 

 loufly attended to, and is correctly placed in the annexed 

 plate. 



I 



