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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 133, page id 1677894601:0309
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133.
abore described: And alter irhat manner are they in-
Rected to makre those Fringes:
Du. 3. Are not the rays oF Lisht in passine by the
edges and sides oF Bodies, bent sereral times backrarde
and formards, rith a motion like that oF an Fel d And
donot the three Fringes ot coloured Listit above-men-
tioned arise From three Cuch bendings:
u. 4. Do not the rars oF Ligt irhich FaIl upon B0-
dies, and are reflected or retracted, begin to bend De-
tore ther arrire at the Bodies; and are ther not re-
Dected, refracted and infected by onc and the Pame
Principle, actins rarioully in rarious circumstances?
Du. 5. Do not Bodies and Light aet mutually upon
one another, that is to lay, Bodies upon Light in emit-
tins, refectine, retractins and inflectins it, and Light
upon Bodies For heatins them, and purtins their Parts
into a vibratins motion wherein heat contitts.
du. 6. Donot black Bodies conceire heat more easily
From Liont than those oF other Colours do, by realon
that the Lixht Fallins on them is not refected outrards;
but enters the Bodies, and is otten reflected and re-
Tracted mithin them, until it be stised and los:
Du. 7. Is not the Arenoth and vigor ot the action
betreen Light and (ulphureous Bodies obserred abore,
one realon irty Culphureous Bodies take Are more
readils, and burn more rehemently, then other B0.
dies dor.
Du. 8.. Do not aII fixt Bodies When heated beyond à
certain degree, emit Light and hine, and is not thIS
emittion pertormed by che vibratins motions ol their
Paxts:
10