Composition Chemical Analysis Has Shown Several Of The Blues To Be
: ON COLOURS AND COLOURING.oxide of copper with a small proportion of iron; none containing cobalt.
There is little doubt, however, that the most brilliant specimens--those
which retain all their original force and beauty in the temples of Upper
Egypt after an exposure of three thousand years, consist of
ultramarine--the celebrated Armenian blue, possibly, of the ancients.
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Chiefly Derived From A Genus Of Leguminous Plants Called Indigofera
found in India, Africa, and America. The colouring matter of these is wholly in the cellular tissue of the leaves, as a secretion or juice; not, however, in the blue state in which one is accustomed to see indigo, but as a colourless substance, which ... Chinese Rouge And Pink Saucers Have Much Of The Qualities Of And
appear to be also prepared from, the safflower. ... Citrine; While Mixed With Purple It Becomes The Other Extreme
... Coeruleum Of Pliny Were A Blue Copper Earth However That May Be In
these days both names signify cobalt compounds, coeruleum being a stannate of cobalt, and cyanine a mixture of cobalt and Prussian blue. Unlike the former, cyanine, being composed of two old colours, can lay no claim to originality. In the fourth chap... Colour
Other things being equal, those artificial ultramarines are most durable which possess the most colour; and all are, perhaps, most permanent in water. If used in that vehicle, care should be taken to employ a gum free from acid; also, whether in wat... Colour Also May Comprise A Similar Series Of Hues Between The Extremes
of the colours composing it. And as the relations of colours have been deduced regularly, from white or light to black or shade; so the same may be done, inversely, from black to white. On this plan the tertiaries, olive, russet, and citrine, take the... Colour It Has Already Been Observed Is Wholly Relative In
contrasting, therefore, any colour, if we wish it to have light or brilliancy, we cast its opposite into the shade; if we would have it warm, we cool its antagonist; and if transparent, we oppose it by an ... Colour Remarks Ruskin Is Wholly Relative; Each Hue Throughout A Work
is altered by every touch added in other places. Thus, to place white beside a colour is to heighten its tone; to set black beside a colour is to weaken its tone; while to put grey beside a colour, is to render it more brilliant. If a dark colour be p... Colours Are Advancing Or Retiring In Their Quality--as Depth
delicacy, &c., not in their hue. A blue object set side-by-side a yellow one will not look an inch farther off, but a red or orange cloud, in the upper sky, will always seem to be beyond a blue cloud close to us, as it ... Colours It Is Composed Of The Extreme Primaries Yellow And Blue
and is most perfect in hue when constituted in the proportions of three of yellow to eight of blue of equal intensities; because such a green will exactly neutralize and contrast a perfect red in the ratio of eleven to five, either of space or power. ... Colours It Is The Coolest As Well As The Nearest In Relation To Black
or shade; in which respect, and in never being a warm colour, it resembles blue. In other respects also, purple partakes of the properties of blue, which is its archeus, or ruling colour; hence it is to the eye a retiring colour, that reflects light l... Colours With The Neutral Black Of The Various Combinations Of Black
those in which yellow, orange, or citrine predominates, have obtained the name of brown, &c. A second class in which the compounds of black are of a predominant red, purple, or russet hue, comprises marrone, chocolate, &c. And a third class, in which ... Colours:--
... Combined With Blue Cool And Retiring It Is However More Congenial
with yellow than with blue, and thence partakes more of the character of the former in its effects of warmth, the influence of light and distance, and action on the eye, by which the power of vision is diminished on viewing this colour in a strong lig... Composition Chemical Analysis Has Shown Several Of The Blues To Be
oxide of copper with a small proportion of iron; none containing cobalt. There is little doubt, however, that the most brilliant specimens--those which retain all their original force and beauty in the temples of Upper Egypt after an exposure of three... Composition Of Black
As a pigment, yellow is a tender delicate colour, easily defiled, when pure, by other colours. In painting it diminishes the power of the eye by its action in a strong light, at the same time becoming less distinct as a colour; while, on the contrar... Compound In Infinite Shades All Of Which Are Neutral Also Or Grey
... Compounded And Be As A Mixture Semi-stable Or Fugitive
It need hardly be observed that the number of permanent orange, green, and purple hues which the artist can compound, depends mainly on the number of permanent yellows, reds, and blues at his disposal. In mixed orange, therefore, a selection of dura... Compounding Black And All Other Neutrals Into Which It Enters In The
proportion of five,--to blue, eight,--and yellow, three. Red is a colour of double power in this respect too; that, in union or ... Compounds Termed Purpurates Among Them May Be Mentioned A Red
purpurate of lead, a purple-red and a rose-coloured purpurate of mercury, a purple-red purpurate of silver, a dark red-brown purpurate of strontia, a crystalline red purpurate of cobalt, a scarlet purpurate of platinum, a yellow purpurate of zinc, and... Comprise And Are Known Under The Names Of:--white Lead Flake White
... Comprise Cerulian Blue Or Coeruleum Cobalt Blue Smalt
... Comprise Red Ochre Indian Red Light Red Venetian Red
... Comprise The Varieties Known As French Ultramarine French Blue
... Connexion With Yellow It Becomes Hot And Advancing; But Mixed Or
... Constitutes In Like Manner The Tertiary Russet Of The Three Secondary
... Contains Among Other Substances A Fine White Lazulite In The Musee
... Contrast Of Hues Upon Which Depend The Brilliancy Force And Harmony
of colouring, we have just spoken; but there is, secondly, the contrast ...