72
Anonymous, having only given the initials H. F. T.
73
Leonardo da Vinci observes: "L'ombra è diminuzione di luce, tenebre è privazione di luce." And again: "Sempre il minor lume è ombra del lume maggiore."—Trattato della Pittura, pp. 274-299. N. B. The same edition before described has been consulted throughout.
74
"Lux varium vivumque dabit, nullum umbra colorem." De Arte Graphicá. "Know first that light displays and shade destroys Refulgent nature's variegated dies."—Mason's Translation.
75
A Spanish writer, Diego de Carvalho e Sampayo, quoted by Goethe ("Farbenlehre," vol. ii.), has a similar observation. This destroying effect of light is striking in climates where the sun is powerful, and was not likely to escape the notice of a Spaniard.