Leonardo, da Vinci, 1452-1519 · London : Printed for I. and J. Taylor, at the Architectural Library ... · leaf 230
n ; we having elfewhere proved, that no lu-minous body has ever feen the fliadow of anybody illuminated by it; it is obvious, that thefliadovv of the heavens, projedfcd on the whiteAvail, will appear azure; and further, that thegromid of that (hadow, being illumined by thefun, will appear reddifh,… … PI. 22. BY LEONARDO DA VINCI. 167 any other parr of the painting. The famething mav be obfcrvcd of du^-, fog, and otherlike bodies, which ojeht always to appear ob-fc^ure, when you are placed between them andthe fun. Smoke is more tranfparenr, and of a colourlefs deep, towards tlVe extremes of its…
