they were perform'd, appear'd so strange, will, when the way of making
them, and the Grounds on which I devis'd them, shall be Publick, quickly
lose all that their being _Rarityes_, and their _being thought Mysteries_,
contributed to recommend them. But 'tis fitter for Mountebancks than
Naturalis to desire to have their discoverys rather admir'd than
understood, and for my part I had much rather deserve the thanks of the
Ingenious, than enjoy the Applause of the Ignorant. And if I can so farr
contribute to the discovery of the nature of Colours, as to help the
Curious to it, I shall have reach'd my End, and sav'd my self some Labour
which else I may chance be tempted to undergo in prosecuting that subect,
and Adding to this Treatise, which I therefore call a _History_, because it
chiefly contains matters of fact, and which History the Title declares me
to look upon but as _Begun_: Because though that above a hundred, not to
say a hundred and fifty Experiments, (some loose, and others interwoven
amongst the discourses themselves) may suffice to give a _Beginning_ to a
History not hitherto, that I know, begun, by any; yet the subject is so
fruitfull, and so worthy, that those that are Curious of these Matters will
be farr more wanting to themselves than I can suspect, if what I now
publish prove any more than a _Beginning_. For, as I hope my Endeavours may
afford them some assistance towards this work, so those Endeavours are much
too Vnfinish'd to give them any discouragement, as if there were little
left for others to do towards the History of Colours.

For (first) I have been willing to leave unmention'd the _most part_ of
those Phænomena of Colours, that Nature presents us of her own accord,
(that is, without being guided or over-ruld by man) such as the different
Colours that several sorts of Fruites pass through before they are
perfectly ripe, and those that appear upon the fading of flowers and
leaves, and the putrifaction (and its several degrees) of fruits, &c.
together with a thousand other obvious Instances of the changes of colours.