( 5-58 ) 
It is alfo Well known,, that u;ilefs,0Dt; Waters be im- 
pregnated witb a confidfei^ble^'Qba^Vnfy^ 'bfrter 
Sale, it will fiQt purge at, all; jTwo pV three’ Gianes 
fignifie nothing,, nor have the Cathartic Power, 
For Example, Put two Drains of the purging S^lts.rOa' 
Quart of common Water; and this t^^Atltj^Vull '^iv'e^ 
but a Stool or two to orre :Wh6 is hAtar,aliy ’^'tj eafle’ 
to work upon, f have exarhM’d feweral/blheY' Chd)^'^at 
Waters, and found much the like ingredients, and ne- 
ver any that I could (ufpedf to carry any purging Pro- 
perties. 
I think, we -cAo Vnuch better, dtiflorcflcjtte riiar ihe 
Chaljheat Waters do contain Stipric and ReQringent Vir* 
tues, becaufe they owe their Birth to the Iron Mineral, 
and mpre particuj.9rly to die wjiicli .Dodor 
X//f<rrfuggefli», (dbtfwithdut ie ReArdn/ id be ’the Pa- 
rent? eVen'of as i^ is doubtlefs’the Caule of 
all Waters: Thu.s I have often examined the 
Solution of the Pjrites by' the Rain Water at Oekforel, 
and at other Places vvbere Copperas i$ made, and found- 
it a Very'ftrong Chlyheat Water. It is from this Minera 
we have our flrong Stiptic and conflringent Medicines, 
for external and internal ufe ; we have our Powders 
and Salts of Steel, or Fitriol of Mars, from hence ; nay, 
even thofe obflinate and inveterate Diarrheas which 
have bafHed the Force of all Medicines, have, by a 
judicious Ule of Tunbridge and other Iron Waters, re- 
ceived a Cure. , 
• But notwithftanding all we can fay, it will be retor- 
ted, that there is Matter df Fad and Experience againR 
us, that the Waters really do purge at Pymonr, where 
they are drank. ' 
This we do allow to be true, that Tmlridge Waters 
do not only purge but fometimes vomit, when drank 
haftily and in great Quantity 3 but our Phyficians have 
cor- 
