(2 23/) 
there remained at the bottome of the difli a ponderous 
black feditnenr, which from its weight and fuddenfubli- 
dence, as alfo from its dark colour he lufpecSled to be of 
aMetallickj and indeed of an Iron nature 3 which being 
dry'd upon paper, upon the application of a Load^ftone^ 
was thereby attrafted in feveral grains, which by ail proofs 
he found to be very good Iron. 
Efteeming hencCj that lulphureous Spirits may be fixed 
by a certain Earth as their Matrix he faith , that he em- 
ployed the fame method with all Minerals, Sulphurs, and 
Mercury it felf^ and accordingly melted various Minerals 
with various Earths and Clays 5 whereby he difcovered 
many Truths 5c Tranfmutations*And to convince his Rea- 
ders of the reality of this Experimentj he fpends a whole 
Chapter ta prove the truth of the matter of fadt^ and of 
the genuinefs of the Iran produced • ex^amining withal, 
whether that Iron thus produced had not been latent ei* 
ther in the Earthy or in the Oyl , and fo might have im- 
posed upon him 5 and having found, it had not, he inqui- 
reth, what may htth^^ MetallicJ^cz^k in general in this Ex? 
periment 3 and in particular^ what the Ferrificli (if we may 
be allow'd to frame fuch a w£>rd) or the Iron-making Prin^ 
ciple, d^. 
III. ABSTNTHIO kuzhdidi, ^ttJoLMichael pehr^: 
M. D. £5/5/?^ 1668 in 8 
Several Lcarn*d men in Germany^wmg a^ociated them- 
felvesjfome years fince, into a Company undtr the Name 
of Academia Natures Curiofevum ^ refolved to undertake, 
each of them^the Defcription of fome particular fubftauca 
in NaturejConfidering with themfelves how long the world 
had been fruitlefly amufed with Generals: Of thofe par- 
ticulars we only named fome in lSlumk6Q. ^,2078. but ftialj 
oow endeavour to give an accompt in the remainder of this 
Traftj of fome performances of thefe undertakings | 
Beginninghere with the Treatife concerning Wormwood; 
which but very lately came to bur hands* In it the Authoi? 
defcnbeth fir[l its Nature^enumerateth its differences, ob^ 
ferveth its vertues^ teacheth divers preparations, and delfi 
mn its manifold Ufes^ efpecially in ftrengthening. and re^ 
covering 
