the fame pace,an.d goeth equally and uniformly at the; fa me rate. 

 For fince the denfity of the moveablc,and the force of the Agent 

 moving it, (which two do caufe the niQti,pn)have a limited pro-r 

 portion to the refinance of the medium, ho\v yielding foever it 

 be; it imft needs follow, that when, the motion is arrived unto 

 that height which arjfeth out of this proportion , it cannot ex- 

 ceed it,but rnuft continre at that yatc, unlcflc fome other caufe 

 give XMw^MiiiJPW^ c ' ie movrabk. For velocity confift- 

 ing in thtathax ijhe moyeable ciittcth thiougb moreof the medi- 

 um in a,fc equall time; it is evident that in the encreafc of veloci- 

 ty, the refinance of the medium which is overcome by ic;^roW- 

 eth greater and greater, and by Jicrle and little gabuth upon the 

 feres of the Ag?t ; fa that the ftperproportjon of the Agent, 

 growth fi,ill lefler and le(T?r a,$ the velocity cncreaiech : and 

 tbererore at the length they mull come to be baUanccd. And 

 tlien the velocity canencrcaf? Uto more. 



And ^hc reafoji of the encreafe of it for a while at the bfgin- 

 nig,vs hecaufe that coining from reft, it muft paflc thtough all 

 th iJKCKmedi-ate degrees of velocity before ic can attain to tlic 

 heigSn ofiwAvhich rcquireth time to perform, o,nd therefore fal- 

 leth undietfrhe power of our fenfe toobfervc. But becaufe we fee 

 it do fofgr(ome t-irrie,, \ve muft not therefore conclude that the 

 nature of fuch motion is (UU to cncvcafe without any period or 

 limit; like thoie lines that perpetually grow nearer, and yet can 

 never meet: for we fee that our reafon examining the causes of 

 this velocity, affureth us that in continuance of time and ipace, 

 it may come to its height which it cannot exceed. 



And there, would be the pitch at which diftancc weights be- 

 ing let fall, would give the grcateft ftrokes and makegreateft 

 imprefsions. It is true that Galileus and Merfenius ( two exacl: 

 expcrimtnters) do think they find this verity by their experien. 

 ces. But farely that is impofsible to be done: for the encreafc of 

 velocity being in a proportion ever diminiOiing, it muft of ne- 

 ceflity come to an inlenfible encreafe in proportion before it end- 

 cthrfor the fpace which the moveable gocth through is ft ill en- 

 creafed; and the time wherein it paflcth through that fpace re- 

 maineth ftilltlie fame little o'ie as was taken up in parting aleflc 

 fpace immediately beforejand liich little differences of great fpa- 

 ces paffed over in a little time, come Coon to be undifeernablc by 

 fcnfc. But rea{bn(which (heweth us, that if velocity never ceafcd 



from 



