C 370 ) 
©nquiry diligently after this Rock, when I was lately at 
Buxtm^ and was direfted to a Place cio(e by the Brook- 
fide, within Three or Fourfcore Yards of the Houfe 
where the Bath is, where I found this Rock to be an Out- 
burft of Allorn-ftone, it falls in the Air from fome little 
Mixture of the Pyriics, and has in fome Places a Coppe- 
rofe Tafte pretty ftrong ; but that is no more than what 
I have found, and you firft obferved, in the Allom-rocks 
at Whitly and Gishurgh in Torkjhire, I need not, I 
know, tell you, how confiderable a Quantity of Sulphur 
may be had from the Allom-Rock, nor how uncapahle 
Sulphur is of producing a Vitriol that will ftrike Black 
with Galls, without Iron; at leaft, I know no Mettal that 
will do it, unlefs perhaps Gold, (which has feverai Pro- 
perties common with Iron ) and yet, 1 believe, the 
Doctor himfelf, would no more fufped: this Rock 
of his to hold Gold than Diamonds ; and if he allow Sul- 
phur and Iron to be mix'd with this Aluminis Miner 
it is but needlefs wrangling to deny the Prefence of the 
By rites, where he allows its Principles. 
