■(2i39> ' , 
lefted and deliver^ more Truths in eight or nine Chapters, than are 
contained in many great Yolums, which treat of Opticas, Diop- 
tricks and Catoptricks after the manner of the Antients. In this 
part'tis chiefly th.2it Arifiot I but efpecially his quarrelling and clafh- 
ing Commentators and FoIIowerSjare taken to task • the Author re- 
prefenting the Pmpmif^ Principles as altogether infignificant and: 
Efelcfs , for a rational Explication of any eiFed in Nature, and ta- 
king aotice, ihsit FrivMim f one of thofe principles) is not things 
aor concurs to their compofition V that Mdtter (another principle ) 
is, according to them , a fomething I know not what , and Form^ 
Cthe third) fuch another I know not what ^ as if giving a raeer Name 
to a thing not known, were enough to make it known. Beiides 
which, he obferveth, that the fame Sed hath introduced in Philofo- 
phy {lore of fpecious notions, altogether Chymerical, asNature*s 
Ahhorrency ofaVacuum^ Attr2iFiii?n^ Sympathy 2irA Antipathy ^^c, in-^ 
vented to give a reafon in fhew of what was not at all underftood. 
For, fakhhe, what doth it teach a man of the Nature of a Loadfione^_^ 
to fay, it hath an A$traBive vertuc, or a Sympathy with Iron. And. 
the Fear af a Facmty 2in(wQrs a Queftion no more, than if a man, be- 
ing asked, How the Wood came to Paris out of remote Provinces, 
ftouidanfwer. It came there by the Fear of. Cold, that is, anfwer 
from the J'/Wcaufe, when the ^j^aW is demanded. Moreover, he 
zcjt&cth thQ Arifioteilan Elements, as well as the common Chymical 
ones,, and endeavours to eftabliOi the three C arte fan proceeding 
from the Firft Dlvif on Sitid Motion, fuppofed to have befain the Uni- 
form Matter produced by the firft Author of things. He noceth fur- 
ther , that the Pfr//?^^?Vj^/ explain not to any purpofe, wherein the 
Senfible Qualities do confift, teaching nothing fatisfadory of Sic= 
city, Htimidity, Hardnefs, Fluidity, Heat, Cold:, Tafte, Odourj., 
Sound, Light, Colour, &C'^ that they make Veffels burft ex metu Va-^ 
cm ^ and aflign thecaufe of the roundnefs of Drops to be the Mutu- 
al Love, which the parts of the fame Liquor have for one another 
whence a clofe union, and fo a roundnefs^ that they affirm ol 
Heat and Cold only what they ( and that erroneouily too) and 
not what they that they teach nothing of whatraaketh a Body:^ 
favoury, fonorous, lucid^coloarM ^ that they make a great but vain 
jfliew with their unconceivable (^ecles ^ that they aflert Vi- 
fion to be made in the Chryfiallrn, &c. ' 
In the Second ^ditt he treateth of the Syftem of the World , according 
to the Three celebrated Hypothefes , of Ptdomy^ Copernic, and Ty- 
cho^ but giveth the preference to the Cop^r/2jV/?;^j, as the plained and 
the moll rational 5 efteeming mean while , that, as to tire fcituation 
of the parts of the Univerfe, Tjr^oagrecth with Op^-mV, except that? 
he maketh the Firmament to have the Earth for its Center fo that 
all the difference betw;een thefe two Opinions as to the Earthy rela- 
