CHAP. IV. An Experimental History of COLOURS begun.
Containing Part the First.
THO there are some, especially Chymists, who think that a considerable Diversity of Colours,* 1.1 must always imploy a Di∣versity of Nature; yet we see, that Taffaties are endued with changable Colours, as well as the Feathers of several Birds, which have as great an Affinity in Nature as in Place; and not only several Feathers vary in Colour from one another, but sometimes several parts of the same Feather: And there is no less variety of Colour in several Leaves of Flowers, tho no difference can be discovered in their Pro∣perties: A considerable Instance in which, we have in Marvail of Peru, which tho it pro∣duces several Scores of Flowers in its Season, yet I have scarce found two coloured alike.