fuerit. Deinde aquam non esse quidem coloris ex se candidi & radium tamen
ex eâ reflexum versus oculum candicare. Rursus cum plana aquæ Superficies
non nisi ex una parte eam reflexionem faciat: si contigerit tamen illam in
aliquot bullas intumescere, bullam unamquamque reflectionem facere, &
candoris speciem creare certa Superficiei parte. Ad hæc Spumam ex aqua pura
non alia ratione videri candescere & albescerere quam quod sit congeries
confertissima minutissimarum bullarum, quarum unaquæque suum radium
reflectit, unde continens candor alborve apparet. Denique Nivem nihil aliud
videri quam speciem purissimæ spumæ ex bullulis quam minutissimis &
confertissimis cohærentis. Sed ridiculam me exhibeam, si tales meas nugas
uberius proponem._

[6] _Album quippe & agrum, hoc quidem asperum esse dicit, hoc vero læve.
de Sensu & Sensib. 3. 3._

[7] Epist. 2. pag. 45.

3. But though in this passage, that very Ingenous Person has Anticipated
part of what I should say; Yet I presume you will for all that expect, that
I should give you a fuller Account of that Notion of Whiteness, which I
have the least Exceptions to, and of the Particulars whence I deduce it,
which to do, I must mention to you the following Experiments and
Observations.

Whiteness then consider'd as a Quality in the Object, seems chiefly to
depend upon this, That the Superficies of the Body that is call'd White, is
Asperated by almost innumerable Small Surfaces, which being of an almost
Specular Nature, are also so Plac'd, that some Looking this way, and some
that way, they yet Reflect the Rays of Light that fall on them, not towards
one another, but outwards towards the Spectators Eye. In this Rude and