C 57 ^ ) 
Vulgar chriftian Account, either by Afcending to the Creation of 
the World, or by Defcending to our Age : He alfo for the fake of 
this Work acquaints the Reader that he betook himfelf to the 
Explication and Cafrigation of the Bibliotheca Chronologic^ Claf- 
ftcorum Authorum JOHANNES JACOBI F R I $ l X 
Tigurini ; fubftituting, as he affirms , a true Calculation in the 
place of a falfe one 5 reducing the Authors, there enujnerated 
to the true time of their Age • diftinguiflxing what is fupjpofititi- 
ous from genuin, and adding many things , that were unhappily 
omitted. Which done, he faith , he proceeded from this Ac- 
count of the Succeffion of Iiluftrious Writers , to the Hiftory 
of the Origin, Increafe , Nature and Constitution oi all Profeffions, 
Sciences and Arts;, chufing the Eight Books of ? 0 L T D 0 Re 
VIRGIL de rerum Invent or thus ; and DIOGENES LA - 
ERXIVS , DeVitiSj & Dogmatibus veter is Gracia Philofophorum ; 
as alfo 3 the Eight Books of fOHANNES MIDDEN- 
DO RP IV S De Celehrihus Vniverfi Orhis ACADE- 
MIIS. 
He excufeth himfelf for having made no further progreiTe in 
this Deferable Work, alledging the difficulty and trouble of 
the Undertaking, the unavoidable interruptions he hath met 
with, and the narrownefs of a private Mans fortune to carry on 
fo Chargeable an Attempt, requiring a Roy all encouragement 
and Affiflance. 
II, THOMriE CORNEL II Confentini PROGTMN AS MA- 
TA PHYSIC A, 
This Author, a Friend to the Cartefian Philofophy, enter- 
tains the Curious in this Book with feven Exer citations, viz, 
i. De Rations Philofophandi : Wherein the genuin Students 
of Naturall Philofophy he prf requires theftudy of Mathematicks» 
to accuftome' their Minds to a fixed Attention, and to ftrid Rea- 
Toning ; and next directs them to ftudy Nature itfelf, and to la- 
bour after a true Hiftory of Nature: recommending laftly and par- 
ticularly the Ufe of cbymiflry, as an excellent key to open her 
Treafures, and the (ludy of Mechanic all Principles, as nearly al- 
lyed tothofe of Nature, 
a, Dt 
