18 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 f{chiftus and of porphyry, (which I 
had feen fo abundantly fcattered among the hills that I had juft 
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 
{tratified, and that the cracks which gave it that appearance were 
only fuperficial. 
ArounD this face were fcattered large blocks of granite, 
which were moftly in oblong fquare fhapes. 
Soon after pafling this precipice, I gained the fummit of the 
mountain, which, though not very highly elevated, is in this 
part of the chain the higheft 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 inveftiga- 
tion, I beggto 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 moft fcrupu- 
loufly attended to, and is correctly placed in the annexed 
plate. 
I 
