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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 143, page id 1677894601:0163
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=163
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examin the reason ol che Colours made by Prilins, L
retracted this compounded Beam oF LieHE Z Y ricli
another Prilim HITIKh, and thereby cast theulual pril
matick Colours PORS Puxon che P’aper I. V placed DC.
hind. And then by Pcoppins anz ot the COlOurs p, 4.
r, S, t, at the Lens, l Found that the tame Colour vould
vanistr at the Paper. 50 it the purple P ras Copped al
the Lens, the purple P uxon the Paper rould vanistr,
and the rest oF the Colours vould remain unaltered,
unless pertraps the blue, (0 tar as lome purple latene in
it at the Lens mioht De separated From it by the Fol-
Lowins retractions. And lo by interceptins the sreen
upon the Lens, the green R upon the P’aper vould va-
nistrus and (o oEthe rest; irhich plainly chews, that a5
the wrhite Beam oF Light Z Y was compounded ot se-
ve Lishts rariousr coloured at the P. ens, (0 thel0.
lours irhich afterrards emerse out of it by new retra-
ctions are no other than thole ot wrhich its Wrlitenels
ras compounded. The refraction oF the Prisim HIIK
kh generates the ColOUrS PORST upon the PaPeF,
noc by changins the coloritic qualities ot the rays, but
by separatins therays vrhich had the rerr Came coloritic
qualities betore ther entered the compolition ot the re-
tracted Beam Wrhite otLightZV. For otherwisethe rays
erhich ivere oF one Colour at the Lens misht be ot anon
ther upon the Paper, contrary to what ve find.
So again, to examin the reason of the COlOurS OF Ra-
cural Bodies, Iplaced such Bodies in the Beam oF LishE
XY, and Found that they ail appeared there oF thole
their omn Colours wrhich they have in Day.light, and
that those C Olours depend upon the rays wrhich had tha
lame COlours at cheLens betore ther entred the compo.
Etion