But comparing it with a sheet of White Paper, we
found the Reflection of the latter to be much Stronger, it diffusing almost
as much Light to a _good Extent_ as the Marble Paper did to _one part_ of
the Wall.
The Green and Purple left us somewhat in suspence which Reflected the most
Light; only the Purple seem'd to have some little Advantage over the Green,
which was Dark in its kind.
Thus much I find in our above mention'd _Collections_, among which there
are also some Notes concerning the Production of _Compounded Colours_, _by
Reflection_ from Bodyes differingly Colour'd. And these Notes we intended
should supply us with what we should mention as our second Experiment: but
having lost the Paper that contain'd the Particulars, and remembring onely
in General, that if the Objects which Reflected the Light were not Strongly
Colour'd and somewhat Glossy, the Reflected Beams would not manifestly make
a Compounded Colour upon the Wall, and even then but very Faintly, we shall
now say no more of that Matter, only reserving our selves to mention
hereafter the Composition of a Green, which we still retain in Memory.
_EXPERIMENT II._
We may add, _Pyrophilus_, on this Occasion, that though a Darken'd Room be
Generally thought requisite to make the Colour of a Body appear by
Reflection from another Body, that is not one of those that are commonly
agreed upon to be Specular (as Polish'd Metall, Quick silver, Glass, Water,
&c.
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