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‘by the round Image which the Lens alone did<br />
c& upoll the Paper might be drawn out into a<br />
lollg one -with parakl Sides, as in ,the third Expcrinlent.<br />
This oblong Image I 1:’ fall ~?pon<br />
a!lot]ler papa at about the falne dlfhllCC from<br />
the I+ifm as before, moving the Paper either<br />
go~~al-& the Prifm or ,fi-om it, until I found the<br />
jr& &fiance’ where the reAilinear Sides of ‘the<br />
‘$mage became mofi difinQ. For 111 this cafe<br />
the circular Images of the hole which co~npofe<br />
that Image after the fame nmm.r that the Circles<br />
“6, L/3, L-i, cylc. do the Figure p t [in Pig.<br />
23.1 were terminated moiE diitin&ly without<br />
’ zmy Pcnrtrnbrn 7 and 1 therefore extended i.nto<br />
Q$ another tlrc 1~117: that they could, and by<br />
conkquence the mixture of the heterogeneous<br />
12e~ays was now the lealt of all. By this nieans<br />
:.u$J to form an oblong.Image (pitch as is p 8)<br />
m I
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