London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 200
the light not being easily cognizable, being left tobe allotted by us to whatever position we may, are looked uponby us as equidistant, that is, as points on a spherical surface. Description of the Illustrations which accompani^ the foregoing Article. Fig. 23. ah c d represents the square front of… … pendicular ray to the plane c h: visual rays are drawn from theprincipal points, the superfluous ones of the cone being rejectedtor the present; i k is made equal to / /?, and ef b d is the tra-pezoidal image; a c ox b d becoming e J\ while g h becomesk k. Now, k h is not proportionally so much…
Architecture
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