Chap. 8. ' 



fome new parts of the medium or divided body, and did in like 

 manner forfake others. Whence it happcneth that in every part 

 of motion, it poflefleth a greater part of the medium then it felf 

 can fill at once. And becaufe by the limitation and confinedneflc 

 of every magnitude unto juft what it is, and no more; it is im- 

 poitible that a leffer body fhould at once equalife a greater : it 

 followeth that this divifion or motion whereby a body atta-in- 

 cth to fill a place bigger then ic felf, muft be done fucceffively : 

 that is, it muft firft fill one part of the place it tnoveth in, then 

 another ; and fo proceed on, till it have meafured it felf with 

 every part of the place from the firft beginning of the line of 

 motion to the laft period of it where : the body rettcth. 



By which difcourfe it is evident, that there cannot in nature 

 be a ftrength fo great as to make the leaft or quickeft moveable 

 that is, to paflfc in an inftant , or all together, over the leaft 

 place that can be imagined : for that would make the moved 

 body ( remaining what it is, in regard of its bignefle ) to equa- 

 life and fit a thing bigger then it is. Therefore it is manireft, 

 that motion muft confift of fuch parts as have this nature, that 

 whiles one of them is in being, the others are not yet : and as 

 by degrees every new one cometh to be ; all the others that 

 were before, do vanifh and ceafe to be. Which circumftancc ac- 

 companying motion, we call Sticceffion. 



And whatfoever is fo done, is faid to be done in time- which 

 is the common meafure of all fucceffion, for the change of fitua- 

 tion of the ftarres, but efpeciaily of the funne and moon, is ob- 

 ferved more or lefle by all mankind: and appeareth alike to 

 every man : and ( being the moft known, co'nftant , and uni- 

 form fiicceflion that men are ufed unto ) is as it were by nature 

 it ielf fee in their way and offered unto them as fitteft to cftimate 

 n nd judge all other particular fuccsfiions, by comparing 'diem 

 both to it, and among themielves by it. And accordingly we 

 fee all men naturally meafure all other fucceiTlons, and expreffe 

 their quantities, by comparing them to the revolutions of the 

 heavens ; for dayes , houres, and years, arc nothing clfe but 

 they,or foinc determinate parts o'f them : unto ibme of which, 

 all other motions and fucceflions m'-uft of nrce/Tity be referred, rf 

 we will meafjrc them. And thus we fee how all the myftcry of 

 applying time unto particular motions, is nothing elfc bxit the 



confidering 



