no Mifcellanea Curioja. 



made with two wedge-like tranfparent Veffefs 

 fill cl, the one with a red, the other with a blue 

 Liquor ; namely, that though they were feveral- 

 ly tranfparent enough, yet both together became 

 opake : For, if one tranfmitted only red, and 

 the other only blue, no Rays could oafs through 

 both, 



13. I might add more Inftances of this Na- 

 ture 5 but I fhall conclude with this general 

 one, that the Colours of all natural Bodies have 

 no other Origin than this, that they are vari- 

 oufly qualified to reflect one lort of Light in 

 greater plenty than another. And this I have 

 experimented in a dark Room, by illuminating 

 thole Bodies with uncompounded Light of di- 

 vers Colours, For by that means any body may 

 be made to appear of any Colour. They have 

 there no appropriate Colour, but ever appear 

 of the Colour of the Light caft upon them ; but 

 yet with this difference, that they are moft 

 brisk and vivid in the Light of their own day- 

 light-colour. Minium appeareth there of any 

 Colour indifferently, with which 'tis illuftrated, 

 but yet moft luminous in red j and fa Bife ap- 

 peareth indifferently of any Colour with which 

 Yis illuftrated, but yet moft luminous in blue. 

 And therefore Minium reflecteth Rays of any 

 Colour, but rrfoft copioufly thole endu'd with 

 red , and conlequently when illuftrated with 

 day-light, that is, with all forts of Rays pro- 

 mifcuoufly blended, thole qualified with red, 

 (hall abound moft in the reflected Light, and by 

 their prevalence caufe it to appear of that Co- 

 lour. And for the fame realon Bife 9 reflecting 

 blue moft copioufly, (hall appear blue by the ex- 

 cels of thola Rays in its reflected Light \ and. 

 the like of other Bodies. And that this , is the 



intire 



