^6 The J^tural Eiflory 
other of the kind,l have met with in Oyiford-fiire have been per- 
formed; 1 forbear, and proceed to the other fait waters that are 
more eminently fuch, and do not fetrifie, 
32. And amongft//6e«?, we muft remember to reckon all fuch 
as are unfit for wafiing^ and will not take Soap ; for though thefe 
to our taft are not fenfibly falt^ yet to our touch (as the Learn- 
ed Willis ^ notes) they are harfh and unpleafant, which they have 
from their too great impregnation with Salts : But what is a much 
more certain evidence of it, we do not find any but inftantly 
lathers^ except fuch as hold an acid falt^ and difcover themfelvts 
fuch upon evaporation. To which may be added this very eafie 
Experiment, That if to fimple water, and fuch as before would 
lather well, you add fomc few drops of Spirit of Vitriol^ or fome 
fuch like ^7czV, itprefently refufes to mix with /o^/ : Thereafon 
of which feems indeed to be no other, but the congrcfsof the 
acid fait of the water ^ with the fix'd and alcalizate one of the foap, 
which it fo wholly fubdues to its own inclinations, that it will 
not permit it any longer to hold the oily parts of the fiap., or mix 
them with the tr^3f/er; but now vifibly increafed both in quantity 
and weight, by the confiderable acquefi of this new prifoner, it 
may alfo perhaps fo fill up the pores and little cells of the water^ 
that the excluded Julphur or oily parts of the foap (as in their fe- 
parate nature) are forced to the furface. 
33. Many of thefe waters are every where found, and accord- 
ing to fome, all Pump waters are fuch ' but that they are mi (taken, 
my experience has taught me, for I have m-et with fomc that will 
/i7//)er very well. ''''--^ ' 'Vv^ z'\ ■■■!V'/<::-;i! — .•I '-.n^^r:;] - 
34. At Henly they are troubled with many of them, but not 
fo much as they are at Tbame ; for there they have a way to let 
them ftand two days, within which time (as I was informed by 
my worthy Friend M*" Munday, Phyfitian there) the Vitriol, or 
whatever other ^^aW it be, falls down to the bottom of theVef- 
fels that hold them, and then they will walh as well as one can 
dtfirc. But zt Tbame^ where there is never a Well in the whole 
Town whofe water will wafli, or (which is worfe) brew : This 
Experiment, for I caufed it to be tryed, will by no means fuc- 
ceed ; fo that were they not fupplyed by the adjoyning Rivulet, 
the place muft needs be in a deplorable condition. The reafon, I 
De Ferment, cap. ^. 
> fuppofe, 
