17 
COMPOSITION OF YELLOW. 
The contrasting,or balancing tint to full yellow, is purple in its deepest 
degree ; to which such a degree of black must be added as will not destroy 
the purple : for though purple is the most opposite to yellow, yet place purple 
in the shade, and it will there appear of a deeper hue than in the light; and as 
the balancing tints are always placed in that part of a composition that is 
most in shade, it is therefore necessary to add black to express the effect that 
shade has upon this, and all other colours in that situation. Its harmonising 
tints are orange, and pale yellow green; the first, being neaily equal to 
yellow in lightness, harmonises remarkably well: care must be taken, as in 
the foregoing composition, not to let the orange be too predominant, and to 
observe the same rule in regard to the reflected tints. If orange is admitted, 
a tint of blue should likewise be visible in the shade tints: but it may so 
happen that orange cannot be introduced; in that case, green, in its different 
gradations, forms the harmonising tint. 
A pale yellow composition is managed exactly in the same manner, only 
weakening the contrasting, harmonising, and reflected tints, in proportion to 
the paleness of the yellow. 
COMPOSITION OF ORANGE. 
The contrasting or balancing tint to full orange is a blue of the deepest 
tint, with the aforesaid addition of black. Its harmonising tint is red ; but 
here, as in the foregoing composition, the pure red must be in the smallest 
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