( ) 
Ohfervatms pag,62, takes notice of fuch an accident 5 but I do 
not under ft and chat any with us have obferved che like* 
^.Whether in thofeConlmines they find any aHml Sulfhur imt^ 
proper form^ that may fafely be concluded not to have he en poducedby 
the aStion of the fire upon the Marcafites i 
Anf. I never faw any, nor any nuo tlfe that I can hear of» 
6. Whether the Sal annoniac he found any where thereahouts^fave 
m thofe places where an actual fire hath come , and alfo which have 
been accefjihk to the Air f 
Anf No Sal armoniac^vm any thing^Iike it to be found , except 
at the fire. 
7 Whether at the mouth of thefe lgnedu6ts^ where flowers of Sul- 
phur and Sal armoniac are founds there do ijfue forth any fleams or ex- 
halations that may be rather lookt upon as the jrodulfions of actually 
ktndled Sulphur ^ than of Sulphur harely fublimed f Which may be 
tried hy holding over the vent Red rofe leaves, or any of thofe other 
bodies that are wont to he blanch' t, or made pale by the fume of burn' 
mg Sulphur f 
There being fuch a mixture of the fteams of Sal armoniac 
and Sulphur rsfing together in nioft places^ it is hard to diftinguifc 
them 5 for though the flowers of Brimftone feem to rife firft, yet 
there is commonly a cruft of Sal armoniac under them ; as for the 
Experiment,! fiiall try it as foon as any Rofes are blovi^n» 
8. Whether the milkj [ubflance that is mentioned in the paper , be 
ever found among Met alii n oars, or meerly among flones i and whe^ 
ther it be found fo furrounded every way with flone^ that no channel 
or other vijlhle paffage can be found, at which it may probably he Juf 
peSfed to have entred into the Cavity wherein it was lodged .^ 
Anf. The Milky fubftance is found no where but where the Sal 
armoniac and Sulphur are totally gone, and the acid part or Alumi- 
nous Spirit of that white inafs will alfo take wing by the increafe 
of the fire, leaving a r^^«/M(?r^dry,ftiptick and as harda^ aftone^ 
ytt J account that a pound of this mafs, before the fire prefs too 
nujch upon it, will go near to afford by So!ution,&c« half a pound 
0/ tolerable cryftallin Allum ; but why this fubftan^fe ftould rife 
fb high as the furface of the Earth, thougb^l havelgme reafons,y et 
they not being fatisfaftory to my felf, I (hall not trouble you with 
them. 
9, Whether in the places where the Sal armoniac is found f he neigh-- 
bouring [oil he nitroHs^ or do yield any flore of common Salt ? 
An{ 
