213. 1. _Green, Blue_, &c. 2. _Black, Green, Blue, Black_, &c. 3. _Black, Green, Black, Blue, Black_, &c. Although _green_ and _blue_ do not well accord, yet the combination with _black_ is not decidedly advantageous. Because of the augmentation of the proportion of sombre colours, the _white_ has a superior effect to the _black_. 214. 1. _Green, Violet_, &c. 2. _Black, Green, Violet, Black_. 3. _Black, Green, Black, Violet, Black_, &c. If the _black_ unite better with _green_ and _violet_ than with _green_ and _blue_, yet these ternary combinations are inferior to the binary combinations; and inferior to the ternary combination where it is replaced by _white_. 215. 1. _Blue, Violet_, &c. 2. _Black, Blue, Violet, Black_, &c. 3. _Black, Blue, Black, Violet, Black_, &c. 216. Although _blue_ and _violet_ are colours which do not accord well, and although there is an advantage in separating them, yet it must be remembered that _black_ in isolating them, does not relieve their sombre colour, but, on the other hand, the harmony of the arrangements of 2 and 3 is more agreeable as a harmony of analogy than the harmony of contrast presented by _white_ with the same colours. Thus there are cases in which the assemblage of _black, blue_, and _violet_, may be advantageous, when it is desired to produce diversified, but not striking effects. ARTICLE III. _Colours with Grey_. Plate 10. [Illustration: PLATE X.] 217. All the primary colours gain purity and brilliancy by the proximity of grey; yet the effects are far from being like or even analogous to those which result from the proximity of the same colours with white. This will not create surprise, if it be remembered that while white preserves the character of each colour and exalts it by contrast, it can never be taken for a colour properly so called; grey, on the contrary, may be; it happens that the latter makes with the most sombre colours, as blue, violet, and deep tones in general, assortments which belong to the harmonies of analogy; while, with colours naturally brilliant, such as red, orange, yellow, and the light tones of green, they form analogies of contrast. But, although white contrasts more with sombre colours than with those that are naturally luminous, there is not observed between white and those two kinds of colours the difference observable between grey and the same colours. This result confirms what I have said of the binary combinations of black. (203.) A.—_Binary Combinations._ 218. _Grey and Blue, Grey and Violet_, form arrangements of which the harmony of analogy is agreeable, yet less so than that of _black_ with the same colours. 219. _Grey and Orange, Grey and Yellow_, _Grey and Bright Green_, form equally agreeable arrangements of harmony of contrast; perhaps they are less so than those in which _grey_ is replaced by _black_.