the Calcining of the Minerals , ' which he Oith is White, and 
"thereupon endeavors toexclude Vitriol and iron from their num- 
ber 5 I havefent youfomeof themca'cin'd, as they came our 
of the Crucible , figned which, you may fee, have a manifeft 
appearance of a red colour, (toufehisown expreffion, whofe 
words 1 have cited p. 57, of my Anfwer: ) Now fince t!.is 
Xlo'eur cannot be fuppofed to come from Niter ^ Alom^ or Salt , 
it muft, even upon his own principled , come from VitrioIjOr I- 
Ton 5 and 1 judge it to come from Iron , which is therein its bo- 
■dy. • ' • : 
And ifyou take thebody ofMinerals^which we firft jfpake of 
to be found in the Sparv-WJiterj and calcineiC, and fd' rub it" into 
a fine powder^ and then edulcorate it in pure'ordiftilled water, 
and afterwards filter it, you fliall find a nitrous Sal--, not much 
difFereju from what was exprefled before, mark't Bj and the o- 
ther following parts alfo-, but a larger quantity ftays always in 
the filter^ chryftallized through the more vehem'eni he^t of the 
fire. ■ • ■ • • ' ■ 
^ But there are other parts 5 which I fetch out of this body of 
Minerals,? which doubtlcfs do much contribute to the C ui^S; 
performed by this water, ?hd ufed with oiher ychicks^fe of, 
lingular ufe in Hypochondriackdireafes. I rook fix ourices of 
the Minerals, which I par into a Retort . aaH placed it inafiif- ; 
xiace covered with Sand 5 increafing the fire gradually, the Re-' 
ceiver being clofe joyned to theRetort, and fo luted, as not 
theleaft Volatil fpirit could evaporate. F/V/?, camethisin the, 
Giafs^figned G, about an ounce in quantity, which is the Phlegm/ 
Then wrth another Receiver^as welHuced, the heat "increafing'^\ 
came the acidSpirit , figned H, near half anrunce inquantity. ] 
I have fometimes found it much more fliarpe and acid than this 
is. and indeed I took it too foon away . from the fire: Yet this 
give.h a Tinflure toadeoodlion of' Kofes , like Spirit of yi-. 
tiiol dr Sale. I have fometnfies obferved this fharpe fpirit' like'.' 
Spirit of Vitriol 5 to chryftallize to the fides of the glafs , 
whtn it hath feecn long kept, and loofing its acidity to becoine . 
like the phlegm; 
- I now coaik to.'the j9jte-ries o{D. Foot , to which I llii!! fperik ^ 
as to rr.acter of fad^refe^ring the Reufon of things to be dilcufied 
by bette^feds/rg i^*5b5rn rb' " To 
