[ 30 ] ſhould thence become oblong: thoſe Rays and their ſeveral parts tending towards the ſeveral Points of the Image P Tought to be again di- lated and ſpread fideways by the tranſverſe Refraction of the fecond Priſm, ſo as to com- poſe a four ſquare Image, ſuch as is repreſent- ed at #7. isaac newton book For the better underſtanding of which, let the Image P T be diſtinguiſhed into five e- qual parts PQK, KQRL, LRSM, MSVN, NVT. And by the fame irregularity that the orbicular Light Y is by the Refraction of the firſt Priſm dilated and drawn out into a long Image PT, the Light PQK which takes up a ſpace of the ſame length and breadth with the Light Y ought to be by the Refraction of the fecond Priſm dilated and drawn out into the long Image 7 gk p, and the Light KQRL in- to the long Image kqrl, and the Lights LRSM, MSVN, NVT, into ſo many other long I- mages Ir sm, m sun, n v t]; and all theſe long Images would compoſe the four ſquare Image 77. Thus it ought to be were eve...
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