f 6i8 ) 
^ime *t!S to be fear*cl,that few Phyficians take pains to fearch into the parti^ 
^ular qualities of thefe waters, which yet are very differing,and confiderable 
enough to induce thenn to an endeavour to know them well, that fo they 
may make a better ufe of them,according to the differences of Difeafcs.and 
the different conftitution of the Difeafed. Now thefe Mineral waters may 
have different particular qualities upon this account al(b,that fomcof them 
come from places lefs diftant from the furface of the Earth , others^ from 
deeper ones. The /i/n»fr,traverfing Earths lefs compad , do refolve the 
Salts they there meet with,and charge themfelves with fame of the fubtile 
tcrreftrial particles found in them, by making them evaporate. The later^ 
being rarihed in the depths of the Earth,whence they are elevated,do eafily 
receive the mixtures of Mineral exhalations and vapours , which are fre- 
quent in thofe inner receffes v but thole mixtures often not being difcerned 
in waters carried away from their Sources, neither by the (cent, nor by the 
tafi;e,cannot be known but by the effeds, which to refer to their caufes is 
not alwaies fo ealie, nor fo certain. 
2a That the knowledg here given of the Salts and Earths of many Mi- 
neral waters will not fully fatisHe the curiollty of thofe, that would like- 
wife be informed of the other caufes of the proprieties of thofe watersifor- 
afmuch as that, bciides the mixture of the concrete matters found therein, 
there may alfo be found in them matters not concreted,fo fubtile and vola- 
til,that there remains nothing in thefediments,that may come to be known 
to differ from the Salts and Earths , and which is net found any more in 
what paffes by didillation. That (harp and vinous taftc,above mentioned, 
which is loft in the Air and by heat,muft have for its fubjed a fpirituous & 
very volatil matter, which were worth the being known. Again,thc heat 
which fome waters have in their Sources , and at their iffuing out of the 
Earth, may beafcribed to fome hot vapours, that have mixed themfelves . 
with them in their courfe within the fubterraneous depths,where the cold 
of the Air hath no free accefs : And certain particular effecSs of thofe wa- 
ters upon divers fubjeds give occafion to judg, that they are not pure and 
uncom pounded. And into thefe things this KoydAffembly are refolved to 
make further inquiries , both for the fatisfadion of the Curious, and the 
beneht of the Publick. 3. Mean time the Obfervations of the Salts and 
Earths of thefe waters may, in their opinion, ferve both in Phyfick and in 
mechanical Arts, to make us capable to judg of the agreeablenefs of fome 
of thefe waters for certain ufes and emploiments. The two kinds of Salts 
to which they have reduced thofe of the Mineral waters of France y may 
have differences, which may divide each of thofe kinds into many fpecies^ 
as they have obferv'd in the Salts that are extradited out of the Allies of 
divers Plants,which they havenoted to be like , fome to true Nitre , o- ' 
thers to Common Salt, and to retain the participation of the fpecifique pro- 
prictiesof their fubjeds. Again/ome of the Earths found with the Salts in 
the fediments of Mineral waters evaporated or diftill€d,may alfo have par- 
ticular ufes, according totheir differences. Some G^r;«<i;i PhyGcians have 
obferv'd, that the white Earth of the Mineral waters of Swalhach is pur- 
^ativciSome bottles of it were brought to thQParifian Academy ^of a vinous 
and 
