Among Reflex's which have the same Figure, Force, and Extent, that will show it self with the greatest or least Strength, which terminates on a Ground the most or least Obscure.

The Surfaces of Bodies partake more of the Colours of Objects, as their Images are reflected upon them, under Angles nearly equal. Of Colours, reflected by Objects upon opposite Bodies, between equal Angles, that will be the most vivid, whose Reflex comes from the least Distauce. Among the Colours, of different Objects, sending their Reflex's from the same distance, and at the same Angles, upon opposite Bodies, that will be reflected with the greatest force, whose Lustre is the strongest. The Object reflecting its Colour with the greatest Vigour upon an opposite Body, is that which has no Colour around it, but of its own kind: And on the contrary, of all Reflex's, that produced by the greatest number of Objects of different Colours, will be the most dim and confused.

The Colour nearest any Reflex will communicate more of its Tincture, than those at a greater Distance.

Lastly, a Painter must tinge the Reflex's of his Figures, with the Colours of such Parts of the Drapery, as are nearest the Carnations on which these Reflex's are thrown; always observing that these reflected Colours do not appear too vivid and distinct, unless where there is some particular Reason for the contrary.