Tertiary Colours Are Three Only Citrine Russet And Olive

: ON COLOURS AND PIGMENTS GENERALLY.

Each of these is composed of, or can be resolved into, either two

secondary colours, or the three primaries. Thus, citrine consists of

green and orange, or of a predominant yellow with blue and red; russet

is compounded of orange and purple, or of a predominant red with blue

and yellow; and olive is composed of purple and green, or of a

predominant blue with yellow and red.



The last three genera of colours comprehend in an orderly gradation all



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