C 2+ ] 
contains more or lefs of a true genuine fulphur, or, 
at leaft, of a fulphureous matter. 
From what has been faid, it appears, that this is 
one of the ftrongeft fulphureous waters hitherto 
found in Great Britain, though I make no doubt but 
that there are many fuch which have not hitherto 
been examined : That, in its natural ftate, it is 
highly impregnated with a volatile fulphureous va- 
pour, which evaporates foon when expofed to the 
open air, and flies off immediately when expofed to 
heat j and that the water then lofes its flrong ful- 
phureous fmell and tafte, though we have the flrongeft 
reafon to fufpedt that it ftill contains a fulphureous 
matter diffolved in it, by fome means hitherto unknown 
to us; for it neither contains an alkaline fait nor quick- 
lime, the two only fubftances we hitherto know to be 
capable of difl'olving fulphur, and keeping it fufpended 
in water : That it lets drop to the bottom of the well, 
and of its channels, a fine powder of fulphur, which 
adheres to the leaves and branches of trees found 
there. 
As this water contains but very little purging fait, 
and does not operate by ftool, fea water, or fome 
purging fait, may be added to the firft glafles drank 
in a morning, when purging is required. Equal 
parts of the Caftle-Loed and fea water mixed to- 
gether, make a water in moft refpedts fimilar to the 
Harrowgate; and probably will be found to anfwer 
in moft cafes where the Harrowgate has been found 
ufeful ; and it may often be ufed with more advantage 
than the purging fulphureous waters, as they fome- 
times purge people of weak conftitutions too freely, 
and weaken them too much. 
Of 
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