sx C O N T E N 



C HA P. III. 



Upon the Suppofitioti of the Circular Motion being, by its Nature, combined of a Cen- 

 tripetal and a Centrifugal Force, no occafion for the Hypothefis of Projection and 

 Gravitation — No need, alfo, for the Firft Law of Motion — That every Motion inaa 

 Orbit is fo combined, not a Self-evident Prcpofition — altogether improbable, as the 

 IMoviiig Power is one fimple Power — Sundry Reafons given why it is impofTible it 

 fliould be fc — Sir Ifaac has proved nothing to the contrary — All his Definitions, 

 Laws of Motion, and Demonftrations, concerning it, relate only to Motion produ- 

 ced by bodily -Impulfe — The Circular Motion, though produced by Mind, may be 

 refolved into the combined Circular Motion of which Sir Ifaac fpeaks — This fuffi- 

 cient for the Purpofe cf Sir Ifaac'd Philofophy Page 519 



CHAP. IV. 



The Foundation of the Mechanical Philofophy is Sir Ifaac Newton's Firft Law of Mo- 

 tion, fo far as it relates to the perpetual Motion of Bodies once fet in Motion — This 

 Propofition ought to be ftridlly examined, as it is of dangerous confequence to the 

 Do6lrine of Theifm — Tiie whole Law confidered — Two Parts of it undoubtedly true 

 — the third Part, concerning the continuance of Motion, only difputed — The Meaning 

 of Tis in/itay in this Law, oppofed to z'is imprejja — ^This Law relates to Motion 

 produced by bodily Impulfe, therefore cannot affe£l what has been faid of the Mo- 

 tion of the Celeftial Bodies by Mind — comprehends the Circular Motion as well 

 as the Rc6lilineal — The Advantage that the Atheifl: will m'lke of the ConcefTion that 

 Matter can move itfclf — The Pfopofition, if true, muftbe eitlier Self evident or De- 

 monflrable — not Self-evident— can only be demonftrated a priori—The Queftion al- 

 ' together MetaphyGcal — Reft and Motion confounded in this Law of Motion — Strange 

 Inaccuracy of LxprefTion — The Q^ueftion is concerning the EfTence of Matter, and 

 whether Motion be eflential to Matter — That it is not eflential to Matter, proved by 

 feveral Arguments — How the Motion is continued, after the Pulfion has ceafed, ac- 

 counted for — That this Motion is not continued for ever, proved by feveral Reafons 

 — Objedion anfwered p. 528 



CHAP. V, 



Sir Ifa?c fuppofef, in his Princlpia, that the Firft Mover is a Material Caufej that 

 tlurcicre nothijig moves butv/hatis moved — This the Opinion of fome antient Phi- 



lofophers. 



