Chap. 14. vtTreuifeof BODIES. 145 



variety : and To are multiplied without end ; for the further 

 this work proceedeth, the more fubjccls it maketh for new bu- 

 fineflc ofthe like kind. 



To deicend in particular unto all thcfc, is impoffible. And to 

 looke further then the generall heads of them, were fuperfluous 

 and troublesome in this diicourfe; wherein I aime onely at 

 /hewing what forts f thing* in common, may be dene by bo- 

 diestthat if hereafter we meec with things of another nature and 

 ftrain, we may be fure they are not the ofspring of bodies and 

 of quantity which is the main Icope of what I have defigncd 

 here. And to do this with confidence and certainty, requireth of 

 ncceflity this leifurely and orderly proceeding that hitherto we 

 have ufed,and fliall continue to the end:fbr walking thus foftly," 

 we have alwayes one foot upon the ground ; foas the other may 

 be fure of firm footing before it fettle. Whereas., they that for 

 more haft will leap over rugged paflages and broken ground ; 

 vvhen both their feet are in the aire, connot help themfelves, but 

 muft light as chance throweth them. 



To this purpofe then we may confider, that thequaliciesof 

 bodies in common are of three forts : for they are belonging ei- 

 ther to the conftitution of a compounded body, or eJlc to the 

 operation of it; and the operation of a body, is of two kinds; the 

 one, upon other bodies, the other, upon fenfc. The laft ofthefc 

 three forts ofqualities, (hall be handled in a peculiar chapter by 

 themfelves. Thofe of the fecond fort, whereby they work upon 

 other bodies, have been partly declared in the former chapters, 

 and will be further difcourfed of in the reft of this fir ft Treatifc : 

 foas that which remaineth for the prefent, is to fall upon the 

 ditcourfe offuch qualities as concur to the conftitution ofbadies; 

 \vith an aime to difcover, whether(or no) they may be effected 

 by the feverall mixtures of rarity and dcnfity, In fuch fort as is 

 already declared. To which cnd,wc are to confider in what man- 

 ner thefc two primary differences of bodies may be joyned to- 

 gcthertand what effects fuch conjunction will produce. 



As for their conjunflion : to deliver the nature of it entirely, 

 we muft begin from the very root of it, and confider how the ^* 

 Unirerfe being finite fwhich M r . White hath demonftratcd in 103^7^ bo! 

 the fecond knot of his firft Dialogue) there cannot be an infinite f^'' ]c ^ d fi j at 

 number of bodies in it;for Geometricians fli.w us how the leaft i$ found infirc. 



K quantity 



