_That the Duration is not a sufficient Characteristick, exemplify'd by the
duration of Froth, and other Emphatical Colours, and the suddain fading of
Flowers, and other Bodies of Real ones_ (80.) _That the position of the Eye
is not necessary to the discerning Emphatical Colours, shew'd by the seeing
white Froth, or an Iris cast on the Wall by a Prism, in what place of the
Room soever the Eye be_ (81.) _which proceeds from the specular Reflection
of the Wall_ (82.) _that Emphatical Colours may be Compounded, and that the
present Discourse is not much concern'd, whether there be, or be not made a
distinction between Real and Emphatical Colours_. (83.)

Chap. 5. _Six Hypotheses about Colour recited_ (84, 85) _Why the Author
cannot more fully Speak of any of these_ (86.) _nor Acquiesce in them_ (87,
88.) _What_ Pyrophilus _is to expect in this Treatise_ (88, 89.) _What
Hypothesis of Light and Colour the Author most inclines too_ (90.) _Why he
thinks neither that nor any other sufficient; and what his Difficulties
are, that make him decline all Hypotheses, and to think it very difficult
to stick to any._ (91, 92.)

* * * * *

Part the Second.

_Of the Nature of Whiteness and Blackness,_

CHAP. I.

_The reason why the Author chose the Explication of Whiteness and
Blackness_ (93.) _Wherein_ Democritus _thought amiss of these_ (94.)
Gassendus _his Opinion about them_ (95.) _What the Author approves, and a
more full Explication of White, makinig it a Multiplicity of Light or