( H8 )) 
does not give us one Proof or Experiment of his having 
found any real Vitriol, or true Sulphur, or any Acidity 
in thefe Waters 5 but fills his Book with. Imaginations, 
and Quotations, expofing other Mens Ignorance. 
Dr. Jordk,a Fellow of the Royal Society, with whom 
I kept a Correfpondence for above thirty Years paft, 
praftifed Phyfick at Franc ford, and often at Sx»albac in 
Summer-time : I defiretf him to examine thofe Waters, 
and give me an account of the Contents of that Sowr - 
Brunn or Aciduia. (fo much celebrated for its Virtues, 
and Concourfe of Perfons of the greateft Quality . ) 
He gave me an Account of forne Ocres , or Ferrugineous 
Parts, which he calcin’d and tortur’d in the Fire, to 
make them confefs their Sulphur Original 5 but in all 
his Experiments did not fatisfy me that the Water 
held one Drop of an Acid by Diftillation, &c. 
That which gave me the firfi: Sufpicion, that the 
Chalybeat Waters did not contain any rough, or Vitri- 
olic, or Acid Salts in them, proceeded from an acciden- 
tal life of a ftrong Iron Water, in which I dilTolved 
Soap, and found it lather and wafh my Hands well, and 
then I us’d a Walh-ball and fhav’d with it} and try’d 
feveral other Waters of this fort, which did the fame, 
and much better than fome Pump-Waters. 
I. I confulted my Palate, and try’d whether I could 
difcoverany Sharpnefs or Acidity in our Englijh Steel- 
Waters at Tunbridge, at Black-Boy in the Parrfh of Fran - 
field in Sufiex, Hanzpfled, Sunning hill in Bsrkfiire, &c. but 
I was fo far from difeovering any fuqii Thing, that thefe 
Waters feem’d rather to leave a fweetifh Flavour or fare- 
well behind : Thus many Alkaly Salts, if nicely examin’d 
(of the fix'd kind) have affe&ed my Tafte. 
II. I made Experiments with feveral forts of fuch 
Spirits as are apt to ferment with Acids} fuch as Spirit of 
HtirRs-horn, 6 i St l Arnioniac , but thefe made no 
Ferment, 
