230. _Orange and Violet._—1. _Orange, Violet_, &c. 2. _Grey, Orange, Violet, Grey_, &c. 3. _Grey, Orange, Grey, Violet, Grey_, &c. The binary assortment appears to me preferable to the other two. The assortment 2 is preferable to 3. If the _grey_ is a little dull with _orange_ and _violet_, it has not the same disadvantage as _black_, in causing too great a predominance of sombre colour. 231. _Yellow and Green._—1. _Yellow, Green_, &c. 2. _Grey, Yellow, Green, Grey_, &c. 3. _Grey, Yellow, Grey, Green, Grey_, &c. _Grey_ combines well with _yellow_ and _green_, but the assortments 2 and 3 are a little dull, and inferior to those in which _black_ replaces _grey_. 232. _Yellow and Blue._—1. _Yellow, Blue_, &c. 2. _Grey, Yellow, Blue, Grey_, &c. 3. _Grey, Yellow, Grey, Blue, Grey_, &c. The two assortments, two and three, are inferior to the first. The _grey_ is heavy to _yellow_ and _blue_; its effect is inferior to that of _white_, and perhaps also to that of _black_. 233. _Green and Blue._—1. _Green, Blue_, &c. 2. _Grey, Green, Blue, Grey_, &c. 3. _Grey, Green, Grey, Blue, Grey_, &c. _Grey_, in its combination with _green_ and _blue_, has not the same objection as _black_, but it has an inferior effect to _white_. 234. _Green and Violet._—1. _Green, Violet_, &c. 2. _Grey, Green, Violet, Grey_, &c. 3. _Grey, Green, Grey, Violet, Grey_, &c. _Grey_ is not employed advantageously with _green_ and _violet_, it is inferior to _white_ in the ternary arrangements, and perhaps I should also give preference to _black_. 235. _Blue and Violet._—1. _Blue, Violet_, &c. 2. _Grey, Blue, Violet, Grey_, &c. 3. _Grey, Blue, Grey, Violet, Grey_, &c. The remarks made (218) in the assortment of _black_ with _blue_ and _violet_ are applicable to the arrangement with grey, taking into account the difference of tone which exists between _grey_ and _black_. _Recapitulation._ 236. I will now give a summary of the observations which appear the most striking on reading the foregoing paragraphs, premising, however, that I do not pretend to establish laws fixed upon scientific principles, but to state general propositions which express my own peculiar taste. 237. 1st. _In the harmony of contrast the complementary arrangement is superior to every other._ The tones must be as nearly as possible of the same depth to produce the finest effect. The complementary arrangement in which white associates most advantageously, is that of blue and orange, and that of yellow and violet is the least advantageous. 238. 2nd. _The Primaries, Red, Yellow, and Blue associated in pairs assort better together, as a harmony of contrast, than an arrangement formed of one of these primaries, and of a binary colour in juxtaposition with it, having the same primary as one of its elements._ _Examples._