[ l8 9 ] 
removed by the ftrong acid in this water. It is an 
excellent detergent for fcorbutic ulcers, as Hoffman 
judly obferves. It has already perform'd feveral re- 
markable cures of this kind. I have often recom- 
mended it in fuch cafes with fuccefs, join’d with pro- 
per internal medicines ; for I am no friend to fpe- 
cifics. 
How far the faccefs of practice of the miners, who 
drink it frequently, may be depended on, longer ex- 
perience muft determine. Certainly, a great allow- 
ance mud be made for the drength of their conditu- 
tions, and the infenfibility of their nerves, condantly 
expofed to the noxious fleams of damp pits. I never 
ventur’d to prefcribe it internally; and as the materia 
medica affords vomits and purges of a more innocent 
kind, I think it in that refpedt unneceffary. I have 
reafon to imagine, from the effedts, which this water 
had on fome earth-worms, that it is a very powerful 
anthelminthic, if cautioufly given. 
Some frefh filings of iron, put in this water, foon 
precipitate all the copper, and make it a flrong and 
agreeable chalybeat. Hence it may be us’d as a fub- 
flitute to Spa-water, whofe virtue depends on the 
iron. Some prepared filings of iron remain’d eight 
days in this water ; without producing the lead al- 
teration. Hence it appears, that this medicine can. 
have but a weak effedt, if any at all, in abforbing 
acids in the firfl paflages. 
Thus having communicated all, that at prefentnc- 
curr’d to me, relating to this, fpring ; if thefe obferva- 
tions render the hlflory of it more perfedt, and in the 
lead contribute to gratify that laudable curiofity, 
which you always fhew, in removing prejudices, 
redlifying 
