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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 80, page id 1677894601:0256
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=256
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BC
Rance 0, and it is transmitted throuoh both tose-
ther, il their distance be intinitely licele or much lels
than L) the disposition to be transmitted at the distances
274, 6, 8, 10, Oc. 15to De accounted à recurn of the
Came disposition which the rar Arst had at the distance o,
that is at its transmission chroush the trst retractins (ur-
Face. AII erhich is the thins lould prove.
Whatkind et action or dilpontion tnis is Whether
it consist in a circulatins or a vibratins motion of the
rar, or of the medium, or Comethins else: I do not
here enquire. Thole that are averse trom assentins to
auy nerr discoreries, but such as ther can explain by an
lypothelis, may for theprelent suppole, that as Stones
by fallins upon Water put the Water into an undula-
tins motion, and all Bodies by percustion excite ribra-
tions in the AI; (0 the rays oF Lishit, by impinsins on
auy retractins or reflectins surtace, excite ribrations in
the retractins or reflectins medium or substance, and
by excitins them agitate the solid parts of the retractine
Or reflectins Body, and by agitatins them cause theBody
to siorr arm or hoc; that the vibrations thus excited
use propasated in the retractins or reflectins medium
or substance, much after the manner that ribrations are
propagated in the Air tor causins Cound, and more
taster than the rays (0 as to overtake them; and that
irtien any ray 15 in that part ofthe ribration wrhich con-
ipires rith its motion, it casils breakes through a re-
tractins Curtace, but irhen it is in the contraer part ot
che vibration erhich impedes its motion, it is casily
refsected; and, by consequence, that every rar is suc-
celsirely disposed to be ealily reflected, or casily tranl-
mitted, by every ribration which overtakes it. But
Wrhether