Opticks 1717 - Up

Eye grow flatter till it come to a due Figur&i
For ihort-lighted Nkn fee remote 0bjeCt.s beti’
in Old Age, and therefore they are accounted
to have the moit Ming Eyes.
Ifthe Obje& A fin F&. 9.1 be feea by Reflexiok
of a Looking-glafs m z, it fllall appear, flat in its
proper place A, but behind the Glad at (1, from
whence angRays AB, AC, AD, which f-low from
one and the fame Point of the Qbje& do afte?
their RHexion made in the Points B, C, D, dir
verge% going from the Glafs to E, F, G;
where they are incident on the §pe&ator’sEyes.
For thcfe Rays do make the fame Pi&we in the
bottom of the Eyes as if they had come from
the ObjeCt realls placed at n without the inter:
pofih3n of [he iookin g-glak ; and all Vifion is
made according to the place and’fhape of that
PiCture. I
In like manner the Obje& D [in Rg. 2.1 feeti
through a Prifm, appears not in its prbper place
D, but is thence tranflwated to fame oth& plac@’
d iituated in the lait refra&ed Ray F G drawti
backward from F to ici.
And ib the ObjeEt Q [in Fi . IO.] keen through
the Lens AB, appears at the 4 ace q from whence
the Rays diverge in pafling P ram the Lens to the
Eye. Now it IS to be noted, that the Image bE
tht?
.P