Howard, Frank: Colour, as a means of art: being an adaptation of the experience of professors to the practice of amateurs (London, 1838)

38 both's principle.

introducing some red clouds in the sky. In some
instances Both has not escaped the dangers that
present the difficulty to his followers; the tone of
these pictures appears hot, and thereby a vulgarity
is occasioned, and that refinement which is required
by Taste in the Fine Arts, is destroyed. Plate.