OF BODIES. Chap.XXXI. 



really and conftantly doc vvcarc like dyes; for,thc figures ofthe 

 Icaft parts of fuch bodies, jovntly with the connexion or ming^ 

 ling of them with pores.mufi of nece/Iity be cbat which maketh 

 chem reflet light unto our eye* 3 in fuch proportions, as the kj- 

 minoiis colours of their tincture and femblance do. 



For two things are to be confidered in bodies, in order td TCA 

 fleiiting of light : either the extancies and cavities of them ,- or 

 iheir hardnefle and fbftneffe. As for the firft ; the proportions 

 of light mingled with darknefTe will be varied, according as the 

 extancies or the cavities do exceed, and as each of them is great 

 or fmall : fince cavities have the nature of darknefle, in reipect 

 efextancies, as ourmoderne Af ironomers do fhew, when they 

 give account of the face (as feme call it) in the orbe of the 

 Moone. Likewise in regard of toft or of refillent parts, light 

 will be reflected by them, more or lefle ftrongly, that is , more 

 or lefle mingled with darkneffe j for whereas it reboundeth 

 fmartly backe,if it ftriketh upon a hard and a refiltent body, and 

 accordingly will (hew it felfe in a bright colour : it muft of ne- 

 ceiTity not reflect at all, or but very feebly if it penetrateth into 

 a body of much humidity, or if it loofeth it felfc in the pores df 

 it 5 and that little which commeth fo weakely from it , muft 

 confequently appeare of a dusky die rand thefe two, being all the 

 taufes ofthe great variety of colours we fee in bodies according 

 to the quality of the body, in which the reall colour appeareth,,it 

 may eafily be determined from which of them it proceedeth : 

 and then by the colour, you may judge of the compo/idon and 

 mixture of the rare and denfe parts , which by reflecting light 

 bcgettcthit. 



In fine , out of all we have hitherto faid in this Chapter , we 4 ; 

 may conclude the primary intent of our fb long difcouriejvvhich Thar all the 

 ij.that as well the fenies of living creatures, as the fenfible qua tofibJe quali- 

 lities in bodies, are made by the mixtion of rarity and dertlity, [^ "j C r eful. 

 as well as the naturall qualities we fpoke of in their place : for it nngout of fc- 

 cannot be denied but-that heate and cold, and the other couples veral mixture* 

 or paires.whichbeate upon our touch , are the very fame as vve of rarity and 

 fee in other-bodies : the qualities which move our taHe and 

 fmell,aremanifcftly a kin and joyned with them: light we have 

 concluded to be fire: and of motion (which afFecleth our care) 

 it is not difputable : fo that it is evident, how til fenfibie qua- 



lities, 



