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 naturally, as the color becomes the leading object, those times of day are chosen in which it is most lovely; and whereas before at least five out of six of Turner's drawings represented ordinary daylight, we now find his attention directed constantly to the evening, and for the first time we have those rosy lights upon the hills, those gorgeous falls of sun through flaming heavens, those solemn twilights, with the blue moon rising as the western sky grows dim, which have ever since been the themes of his mightiest thoughts.

I have no doubt that the immediate reason of this change was the impression made upon him by the colors of the continental skies. When he first travelled on the Continent (1800), he was comparatively a young student; not yet able to draw form as he wanted, he was forced to give all his thoughts and strength to this primary object. But now he was free to receive other impressions; the time was come for perfecting his art, and the first sunset which he saw on the Rhine taught him that all previous landscape art was vain and valueless, that in