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.) _This and other Considerations formerly deliver'd,
Illustrated by Experiments with black and white Marble_ (122, 123.)
_Thirdly, from the Black appearance of Holes in white Linnen, and from the
appearance of Velvet stroak'd several ways, and from an Observation of
Carrots_ (124, 125.) _Fourthly, from the small Reflection from Black in a
darkned Room_ (125, 126.) _Fifthly, from the Experiment of a Checker'd Tile
expos'd to the Sun-beams_ (127.) _which is to be preferr'd before a Similar
Experiment try'd in_ Italy, _with black and white Marble_ (128.) _Some
other congruous Observations_ (129.) _Sixthly, from the Roasting black'd
Eggs in the Sun_ (130.) _Seventhly, by the Observation of the Blind man
lately mention'd, and of another mention'd by_ Bartholine (130.) _That
notwithstanding all these Reasons, the Author is not absolutely Positive,
but remains yet a Seeker after the true Nature of Whiteness and Blackness._
(131, 132.)

Experiments _in Consort, touching_ Whiteness _and_ Blackness.

_The first_ Experiment, _with a Solution of Sublimate, made White with
Spirit of Urine_, &c. (133, 134.)

_The second_ Experiment, _with an Infusion of Galls, made Black with
Vitriol_, &c. (135, 136.) _further Disc