FULL ARRANGEMENT 
OF 
COLOURS. 
In order to arrange a variety of colours in a group, so as to produce harmony, 
attention must be paid to the order in which they are seen in the Rainbow, 
or the Prismatic Spectrum*; for,if colours are promiscuously jumbled to¬ 
gether, without regard to the proper quantity of each, and no other meansjised 
to obtain harmony than merely subduing them by shade, or breaking them by 
mixing them with one another, it will frequently be impossible to do it^tlmt 
way without departing from nature; and,if they could be 
•OH- in subordination by those means, still the additional attention to the 
natural lightness, strength , and quantity, of each, is as requisite to be observed, 
as*Jtfie rules of perspective in regard to the size, and figure of objects: for, 
* It is scarcely necessary to explain the well-known spectacle alluded to: but as there may be 
some young ladies who have not seen it, I shall beg leave to inform thern.it is a mode of separating 
the component parts of a ray of the sun’s light by means of a three-corner’d wedge of glass, called a 
prism, which will fling them upon any object in their way, such as a sheet of paper, and there exhibit 
exactly 'the same colours^seen in the rainbow, beautifully blending one into another an iixm tilinrr i 
and formjvhat is called die Prismatic Spectrum. 
/ 
