C 7JI ) 
Scephani Chauvini Lexicon Rationale^ five The- 
fumus Fhilofopbicns , See. Kotorodami y in 
Folio, 1692. 
THis Philofophical Dictionary is contrived in an Al- 
phabetical Order, and is intended by the Author 
as a Key to Phzlofophy, difcovering what may be known 
by; the Light of Nature, expounding the Philofophical 
Terms, and their various Acceptations according to the 
Ancient and Modern Opinions : It -will be fufficient to 
inform the Reader, that he explains Words relating to 
Logic, Natural and Moral Philofophy : 'efpeciallly fuch 
as cade the greateft Contefts in the Schools both of the 
Ancients and Moderns. 
Amongft them are interfperfed Aftronomical, Optica!, 
Mechanical , Chymical , and Phyfico-Mathematical 
Words, chiefly fuch as explain Bodies and their feveral 
Affections ; the whole is rendred the more intelligible by 
feveral Schemes contained in 30 Folio Plates, exhibiting 
to the Readers view the (everal Hypothefes^ with the 
S ru&ures of very many Inftruments and Machines, as 
Barometers, Thermometers* Hygrometers, Telefcopes 
and Micro.fcopes } made ufe of by the late.fnquifitive Age 
in (earching deeper int.9 the nature of Bodies. As a Spe- 
cimen. 1 fhali prefent the Reader with an Abrtrad: of 
what he writes of the Telefcope. Fir ft, He gives the 
Definition, Ufe and Effe&s thereof,- proceeding to feve- 
ral forts, he defcribes the common one made with a 
Convex Objed Lens and Concave Eye-glafs, the Aftro- 
nomical Telefcope, with tw r o Convex Lens's, another 
with 
