the shore of a moorland stream, where they truly express the stain of its golden rocks, and the darkness of its clear, Cairngorm-like pools, and the usual serenity of his aërial blue is enriched into the softness and depth of the sapphire, when it can deepen the distant slumber of some Highland lake, or temper the gloomy shadows of the evening upon its hills.
The system of his color being thus simplified, he could address all the strength of his mind to the accumulation of facts of form; his choice of subject, and his methods of treatment, are therefore as various as his color is simple; and it is not a little difficult to give the reader who is unacquainted with his works an idea either of their infinitude of aims, on the one hand, or of the kind of feeling which pervades them all, on the other. No subject was too low or too high for him; we find him one day hard at work on a cock and hen, with their family of chickens in a farm-yard; and bringing all the refinement of his execution into play to express the texture of the plumage; next day he is drawing the Dragon of Colchis