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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 55, page id 1677894601:0231
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=231
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PROL. V.
The transparent parts of Bodies accordine 10 their se
verat sixes must reflect rays of one Colour, and transmit
those of another, on the same erounds that thin Plates or
Bubbles do reftect or transmit those rays. And ihis I tatee
to be the ground of au their Colours.
For it a thin d or plated Body, irhich beins OF an
eren ChiCkneIS, apPeAES AII OVET OF OnC UNIFOEIL CO-
lour. Bould be Hlit into chreds, or broken into tras.
inents, oF the Pame thickness with the plate; I sec no
realon wrhiy ererr thred or fragment Mould not kecp its
Colour, and by consequence wtr a heap ofthose chirede
Or Fragments Thould not constitute a mals or ponrder ot
the same Colour, wrhich the plate exhibited betore it
asbroken. And the parts ot aIl natural Bodies beine
like (O many FFaSMENIS OF a Plate, must on the lame
srounds exhribit the same COlOurS.
Nor that ther dos0, will appear by the aftinity oF
their properties. The tinely coloured teathers ot lome
Birds, and particularly thole ot Peacocks Pailo, do in
the very same part of the Feather appear oF several CO-
lours in sereral positions of the Fye, alter the very lame
manner that thin Plates rvere found to do in the 7th
and 1gch Obserrations, and theretore arise From the
thinnels oF che LTAN(PATeNE PaRES OF The Feathers; that
is, Fromthe Pendernels oF the verr tine Hairs, or C’apilla-
menta, Which gror out ot the sides of the grosser late.
eal DTaNCHCS OF ABTES OF thole FeatherS. And tothe
Came purpole it is, that the Webs oF lome Spiders by
beins