( 3 8 3 ) 
4. Of bathing in Mineral Waters , Hot 
or Cold . 
Having confidered all Cold Baths in the 
fame Light, as adting merely by Preffure 
and Contradtion, and all artificial Ample 
tepid Baths, as producing their EfFedts by 
Relaxation and Dilution, let us now view 
Bathing in another Light, viz. in mineral 
Waters, and therefore medicinal. Thefe 
Baths are either, ftridtly and properly fpeak- 
ing, mineral Waters impregnated with vo- 
latile or fix’d mineral Principles ; or they 
are fuch as differ from moil common Wa- 
ter, merely on account of the Soil they are 
ftrained through, and the particular Kind 
of Earth they carry in their Interfaces, 
which may juftly appropriate them to fome 
particular Ufes above common Water ; as 
petrefying Waters, which carry much im- 
palpable Earth in their Pores, and are 
therefore proper to bathe in for an exceflive 
Perfpiration, or too great a Dilatation of the 
fudoriferous Dudts $ Chalk or Lime-ftone 
Waters, which, being more drying and 
healing, are therefore better adapted to old 
3 Ulcers, 
