Leonardo, da Vinci, 1452-1519 · London : Pinted for J. Senex ... and W. Taylor ... · leaf 240
-cWccn Air, Vapour, Smoke, or only at a Greatat a Diftance, Diftance \ that will appear the molt Vilible, andand in a Fog, Diftinc^which is the mod elevated j And amongappear more Things equally elevated, that whieh is round in thoieVhkh the V°braircn: Fo£> wiU 3PPear the ,r,oft 0b lrcloJlr.K… … *By Leonardo da Vinct. 165 tlie Top of the Middle Tower /?, will be (benin the fame Fog;} but then, Co much of it as ap-pears to the Eye H, will not be funk beneath-one Degree of Depth; fb that the Top C, willappear more Objure than the Top B •, and thatagain, more obfenre than the Top A. The Neck…
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