indirect means. He gives the varieties of tone in masses;190 he smartly impinges lights, he clothes his preparation with more delicate local hues, he unites, he glazes: thus everything depends on the method, on the process. For if we look at colour abstractedly, the most positive may be called the most beautiful, but if we keep the end of imitation in view, this shallow conclusion falls to the ground. The refined Venetian manner is very different from mere direct, sedulous imitation. Every one who has a good eye may arrive at such results, but to attain the manner of Paolo, of Bassan, of Palma, Tintoret, or Titian, is a very different undertaking."191
The effects of semi-transparent mediums in some natural productions seem alluded to in the following passage—"Nature sometimes accidentally imitates figures in stones and other substances, and although they are necessarily incomplete in form, yet the principle of effect (depth) resembles the Venetian practice." In a passage that follows there appears to be an allusion to the production of the atmospheric colours by semi-transparent mediums.192
NOTE Y.—Par. 672.
The author's conclusion here is unsatisfactory, for the colour of the black races may be considered at least quite as negative as that of Europeans. It would be safer to say that the white skin is more beautiful than the black, because it is more capable of indications of life, and indications of emotion. A degree of light which would fail to exhibit the finer varieties of form on a dark surface, would be sufficient to display them