) _and
by the appearance of a River, which both to the Eye and in a darkned Room
appear'd White_ (105, 106.) _Fifthly, by the Whiteness of distill'd_
Mercury, _and that of the_ Galaxie (107, 108.) _and by the Whiteness of
Froth, rais'd from whites of Eggs beaten; that this Whiteness comes not
from the Air, shew'd by Experiments_ (109, 110.) _where occasionally the
Whiteness of Distill'd Oyls, Hot water, &c. are shew'd_ (111.) _That it
seems not necessary the Reflecting Surfaces should be Sphaerical, confirm'd
by Experiments_ (112, 113.) _Sixthly, by the Whiteness of the Powders of
transparent Bodies_ (114.) _Seventhly, by the Experiment of Whitening and
Burnishing Silver._ (115, 116.)
Chap. 2. _A Recital of some Opinions about Blackness, and which the Author
inclines to_ (117.) _which he further insists on and explicates_ (118,
119.) _and shews for what reasons he imbrac'd that Hypothesis_ (120.)
_First, from the contrary Nature of Whiteness and Blackness, White
reflecting most Beams outwards, Black should reflect most inward_ (120.)
_Next, from the Black appearance of all Bodies, when Shadow'd; And the
manner how this paucity of Reflection outwards is caus'd, is further
explicated, by shewing that the Superficial parts may be Conical and
Pyramical_ (121.
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