20 
harmonising tint that you can freely make use of; so that it is evident this 
colour, in its deep state, can never be made a princij^U of. But by a mixture 
of white you may bring it forward in a certain degree,- and it is in that state 
I shall speak of it. Its contrasting tint is orange, subdued by black and 
white, so as neither to be too dark^nor too bright for the blue. 
U 
Its harmonising tint a deeper blue. 
The reflected tint is 
contrasting tint. 
of Am pale blue, and a small portion of the 
Whatever green yomhave occasion to admit must be carefully subdued 
by black, to prevent itfbeing too powerful for the blue. 
INDIGO. 
From what has been said of the foregoing colour, it is scarcely necessary 
to observe, that this colour cannot form a composition of itself. 
COMPOSITION OF VIOLET. 
• • ^ 
This colouijin its deepest state>isjinfit afa© for a principle in composition,* 
and its proper place is in the shade. But as three of the prismatic colours, 
in their gradations from one to another, form each of them a third for 
instance, red graduating to yellow produces orange ; and yellow graduating 
towards blue produces green ; blue graduating towards violet produces in¬ 
digo so does violet, the extreme of one end of the prismatic spectrum, 
graduating towards red^/the extreme at the other end, produce in its grada- /4, 
A- 
