PROGRESSU CHBMIÆ. gi
rtdire* Manus noftræ ociilatæ funt, Kirckere5 credunt
qvod vident. Nil tale demonftrant Vulcaniæ oæcinæ.
Nitrum flammis tort.ym in acidum degenerat liqvo-
rem j fi injeåis uftulexur carbonibus vivis, in Calem li-
xivum, å natura falis communis alienifliniumj licum
fulphurc,claufo vafe fatis percoqvatur, intendente tan-
dem viriumextremafolle,in fa$umj in falé communem
nullo hadcnus artificio.Deceptum ex eo hariolorÆ/r^e-
rum, qvod nitri fpiritus fali affufus cryftallos fuas deni-
qve in fpeciem redivivi nitri reformet cæterum men-
titur hic fal cfculentus niirum, non eft. Qyod enim
nitrum inde refulcat,jion fali id adfignandum,Ced fpiri-
tui nitri, hoc eft particulis nitri attenuatis, o.pe falis Ce
iterum conjungentibus, ut formam induant priftinam.
Neqve vero vel nitrum, vel alumen, vel vicriolum>
dummodo probe purgata, in Calem efculentutn com-
munem degenerabunt unqvam. Sed perdimus verba in
re confeffå: Largimur tamen hoc Ktrckero, Calem com-
munem in nitrum, alumen, vitriolumqj a6ire, ubi ab
ignium fubterraneorum motu particulas fuas immuta-
verit, adeoqj in minutiores confra&us portiunculas fal-
fum ancefaporem nunc in acidum converterit, fi admi-
fceantur tamen ad compofitionem nitri, falis lixivi ra-
menta; ad aluminis,ramenta plumbi j ad vitrioli hoc eft
chalcanti, ferri, ærisvé tenuia refegmina. Utcutujj au-
tem iftæc fe habuerint, latere tamen in falis five com-
munis, five nitri centro aliqvid immutabile & omnia
coagulans, figensqj, hoc eft qvod verbis conceptiffimis
negamus, tum qvod utrumqj hunc falem & qvidem to-
tum, pauciflimis faecibus relidis,non difficulter artifex
Chcmicus in fublime agat, inqj fpiritum volatilem re-
L formet.
In [ale
(ommuni
nihil im-
mutAbile^