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jp 1&&i ~2 feverit forts of Rays, each of which<br />

&ve, originally their feveral Refiangibilities alId<br />

coIorific Qualities, and notwithit;anding their<br />

R&a&ions and Reflexions, and their variotis<br />

$eparations or Mixtures S keep thpfe their original<br />

Properties perpetually the faYne without<br />

alteration; then all the eoldurs ilz the world<br />

lnult: be Such as confiantly ought to arife from<br />

&e original colorific qualities of the Rays whereof<br />

the Lights confilk by which thofe Colours<br />

cire~k'eell. *And therefore if the reafon of any<br />

Colour ,whatever be required,. we hpve nothing<br />

elfe to do than to confider how the Rays in the<br />

Sun’s Light have by Reflexions or l

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