oder Boyle's Zeitalter. 89
das Scheidewasser , das zur Scheidung des Silbers
Ti aus dem Golde gebraucht worden, wieder zu erhalten
* stehe *) , wie weit vortheilhafter Blei aus Bleiglanz
4 durch Eisenfeile als durch einen laugenhaften Flus aus
Weinstein und Salpeter erlangt werde 3 schon zu sei-
ner Zeit waren in England glückliche Versuche gemacht,
Blei mit Bortheil, der seinen Grund theils in der
Bauart
gentum, et Cuprum a se invicem sejungant, ea in com-
muni aqua forti difsolverint, satiato Menfiruo aquati
fontanam copioset affundunt, deinde inje&is lawmellis
aereis solutum Argentum ad fundum praecipitant. Ve-
yüm qucniam hoc modo post Argenti separationem mul-
tum Cupri in Menstruo superesse consuevit (quod satu-
rata ipfius Tinctura indicat ), quo impraegyatur hic li-
quor in maximum vertat compendium, solent. ipsum
materiae cuidani candidae, quam /Vhiring vernacult ap-
pellant (quae calcis candidae vel.lüti species,effe dicitur
pulverisatay depurata et in globulos eformata ) super-
fundere, cui particulae cupreae aslociatae paucarum ho-
rarum (patio magma quoddam PVerderer di&um consti-
tuunt; pi&orum aliorumque pigmenta tractantium üsibus
accommodatum, Menstruo paene limpido relido, €
quo' deinceps Nitri aliquantum codtione eliciunt, quod
cum Vitriolo novae -aquae fortis pracparationi inser-
wigte 7.00
:) That the goods of mankind may be much increased
by the. naturalifts: insight into trades..-Se&.:I1LL Works,
B. 111, S. 171.
4) Previous hydroftatical way of.eitimating ores. Se&. VI.
Works. B. YV. S. 29. “now, one that first occurs to
my memory, was afforded me by two equally heavy
portions of the same lead ore devoid of spar ; where
of one, being reduced with a due weight of'nitre -and
tartar fulminated together, afforded much less of mal-
leable lead , than was obtained by means of halfior a
quarter of the.quantity: of. filings of Mars „: which for
trial's sake I then employed cn the othier: to shew,
how much better a redu&ive of that kind of ore,"
248
t
