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120

Uniformity of tints.
 
If we inspect the works of nature closely we shall find that they have no uniform tints, be it in the animal, vegetable or mineral kingdom; - be it flesh or foliage, the earth or the sky, a flower or a stone, - however uniform its colour may appear at a distance it will, when examined nearly, be found constitute of a variety of hues and shades, compounded with harmony and intelligence" ..." There are only two ways in which this distinctness in union can be affected in practice: on of which is by hatching, or breaking them together, in mixture, without compounding them uniformly; and the other is by glazing, in which the colours unite & penetrate mutually, without monotonous composition."  Field.

Skill of Colouring.
 
"The skill of colouring is not to be acquired by any off-hand processes; perfect success therein will require what no litterary work can supply - the constant & united efforts of an able hand, a good eye, & a cultivated judgment, directed in the first instance, to the works of good clolurists, and perfected by an assiduous application to Nature & Science."
Field.

Newton's Theory.
 
Field in his Cromatography, [[strikethrough]] confiding in [[/strikethrough]] Influenced by Newton's Theory of Colours, which declare that White is the union of all the Colours, yet knowing the fact from artists that Black is produced by the combination of the primary colours, has nevertheless permitted himself to write the following incomprehensible and, to an artist, useless sentiment: "Black & white are the same colours, and, since colours are mere relations, if there were only one colour in the world, there would be no colour at all, but only light and shade, however strange, offensive, or paradoxical such assertion may appear."

Venice Turpentine
 
Krems White ground with Venice Turpentine becomes yellow. In specimens made for comparison, the same white, ground with Copal Varnish & Magnesia remained with scarcely any change - & very little when the same was combined with ordinary Megelp.