713 
MircroGRAPHIA. 
Their Blues are feveral kinds of Swalts, and Verditures, and Bife, and 
Vitramarine, and Indico, which laft has many dirty or dark parts inter- 
mixt with it. : : 
Their compounded colour’d bodies, as Pi#k,, and Verdigrefe,which are 
Greens, the one a Popingay,the other a Sea-greew then Lac,which is a 
very lovely Purple. : : 
To which may be added their Black and White, which they allo 
ufwally call Colours, of each of which they have feveral kinds, fuch as _ 
Bone Black, made of Ivory burnt in a clofe Veflel, and Biwe Black, made 
of the {mall coal of Willow, or fome other Woods and Cullens earth, 
which is a kind of brown Black, @c. Their ufual Whites are either ar- 
tificial or natural White Lead, the laft of which isthe beft they yet have, — 
and with the mixing and tempering thefe colours together, are they able 
to make an imitation of Any colour whatfoever: Their Reds or deep 
Yellows, they can dilute by mixing pale Yellows with them, and deepen 
their pale by mixing deeper with them; for it is not with Opacons co- 
Jours as itis with tranfparent, where by adding more Yellowto yellow, 
itis deepned, but in opacous diluted. They can whiten any colour by mix- 
ing White withit, and darken any colour by mixing Black, or fome dark 
and dirty colour. And in a word, moft of the colours, or colourd 
bodies they ufe in Limning and Painting, are fach, as though mixt with 
any other of their colours, they preferve their own hue, and by being iv 
fuch very {mal parts difpers'd through the other colour'd bodies, they 
both, or altogether reprefent to the eye a compofitum of all; the eye be- 
ing unable, by reafon of their fmalnefs, to diftingnifh the peculiarly co- 
lour'd particles, but receives them as one intire compofttum : whereas in 
many. of thefe, the Adirrofcope very eafily diftinguifhes each of the com- 
St ae and exhibiting itsowncolour. 9 9) 
Thus have I by gently mixing Vermilion and Bife dry, produc'd.a very 
fine Purple,or mixt colour,but looking on it with the AGcrofcope, I could 
eafily diftinguifh both'the Red and the Blue particles, whichdid not at 
all produce the Phaytajm of Purple. i 
To fumm up all therefore in a word, I have not yet found any folid 
colour'd body,that Ihave yet examin’d,perfely opacous; but thofe that 
are leafbtranfparent are A¢etalline and Mineral bodies, whole particles gé- 
nerally, feeming either to be very fmall, or very much flaw'd, appeat 
rapes oa = ee — are very few of themthat I have 
n witha cope, that have not very:plainly or circumftanti- 
ally manitefted themfelves tranfparent. = | i tididxa'dars 
~ And indeed, there'{eem to be fo few bodies in the world that are’ ## 
minimis opacous, that | think one may make ita rational Qxery; Whether 
there be any body abfolutely thus opacous 2 For doubt notat all (and 1 
have taken notice of : , 
lt to fee all thofe bodies ainl Ar hae 
fain onely to ghels at atl ben Sage onveripat 
yet make ufe of are fuch, that 
eye, 
