(8io) 
The Curious are hereby advertifed, that the Author hstb thought fit to 
lodge with the Publifher a number of Copies both of this Cemetegrapky ,zn<i 
ot all his former Works, viz. the Selenography, Mercurius in fole vtfus, Ve- 
nus in fole vifa, EpificU de motu Libratmo Lnn* y and the Frodrmus and 
Mamiffa concerning the two Comets of An. 1664, and An. 166$. All 
which Books being order'd by the Author to be vended here, for an Ex- 
change into the longeft and beft Telefcope, that can be made by Englijh Ar- 
tifts- thofe that aredefirous to be furniiht with them, may pleafe to ad- 
drefs themfelves to the Puilifeer, who is ready to give them further infor- 
mation herein. 
IL Renati Des Cartes EPlSTOLv£ 5 Pars I. & U. 
Londini A. 1668. in 4°. 
T Hough fome few of thefe Letters were by the Author him- 
felf written in Latin, yet the farr greater part of them ha- 
ving been by him written in Frcncb,they are now come abroad all 
Tranflated into Latin, for the benefit of thofe, that are unskilful 
in the other Language, They contain very many Philofophi- 
cal queftions and matters, of all forts, and an Explication of ma- 
ny difficulties, to be met with in the other Works of the Illuftri- 
ous Author 5 and were written to fome of the moft Eminent 
perfons for knowledge and learning of this Age. The intelligent 
Reader willfind here an incredible and exceedingly delightful va- 
riety of Subjects, Geometrical Arithmetical) Mnfical, Optical^Me- 
*chanical,Fhy[tological, Medical, Metaphyseal and Moral. 
There is a Third part of the fame Authors Letters yet remain- 
ing un-tranflated, which is like to follow very fhortly, with fome 
other Tra#s, concerning Man, and the Union of the Rational Soul 
with the Body 5 whereof the former was written by Def cartes him- 
felf, the latter by the Ingenious D. Dela Forge, upon Carte fan 
Principles. 
III. Scrutinium Chymicum VITRIOLI, ^uth. Joh.Geor- 
gio Trumphio, Saxone, Med. Licentiate $en<c 1667. 
Confining but of % or 9 fleets in 4 0 . 
THis x^uchor endeavours in this fmall TraS to fliew the Na- 
ture, Difference, Choice 3 Qualities and Vertues 3 fefpecial- 
ly in Phyfick)of Vitriol^ together with the various wayes of pre- 
paring both dry and liquid Medicins out of that Mineral Juyce. 
The way of making Vitriol ufed at Goflar in Germ-any ( the Au- 
thors Native Country) we (hall thence extradl and give here ver- 
b%\m } as follows 3 ' lf# 
