Wood-tar Blue
: ON THE PRIMARY, BLUE.The colours obtained from coal-tar have become household words, and it
is not impossible that those from wood-tar may be some day equally
familiar. At present wood-tar is comparatively unexplored, but the fact
that picamar furnishes a blue is at least as suggestive and hopeful as
that transient purple colouration by which aniline was once chiefly
distinguished. As aniline is a product of coal-tar, so picamar is a
product of wood-tar; and as the former gives a purple with
hypochlorites, so the latter yields a blue with baryta-water. Both are
distinguished by coloured tests, but there is this advantage in the
picamar blue--it is comparatively permanent.
Picamar blue is produced when a few drops of baryta-water are added to
an alcoholic solution of impure picamar, or even to wood-tar oil
deprived of its acid. The liquor instantly assumes a bright blue tint,
which in a few minutes passes into an indigo colour. From [Greek: pitta]
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... Ultramarine Red?
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is an oxide of a deep dull green colour, inclining to olive, and nearly black when in lumps. A durable but unattractive preparation, equalled in permanence and far surpassed in beauty by many cheaper compounds. ... Uranium Orange
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Can be produced of a pale or orange tint, differing in brightness and depth of colour according to the mode of preparation. It is fairly eligible as a pigment, and far superior to the many fugitive compounds which have from time to time appeared. Be... Vanadium Green
falls when ferrocyanide of potassium is added to vanadic acid dissolved in a strong acid. It is a beautiful green precipitate, but at present simply a curiosity, owing to the rarity of the metal vanadium. * * * * * ... White Chalk
Is a well-known native carbonate of lime, employed by the artist only as a crayon, or for tracing his designs, for which purpose it is sawed into suitable lengths. White crayons and tracing chalks, to be good, must work and cut free from grit. From ... Wongshy Red
There was imported a few years ago from Batavia a new colouring ... Wood-tar Blue
The colours obtained from coal-tar have become household words, and it is not impossible that those from wood-tar may be some day equally familiar. At present wood-tar is comparatively unexplored, but the fact that picamar furnishes a blue is at lea... Yellow Carmine
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When hydrochloric acid and zinc are made to act on nitro-prusside of sodium, a corresponding zinc compound is formed of a deep orange colour, slightly soluble in water, and not permanent. * * * * * For a secondary... Zinc-cobalt Blue
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in hue less than any other colour by mixture with black, as it is likewise by distance. Blue is present subordinately in all tertiary and broken colours, and being nearest in the scale to black, breaks and contrasts powerfully and agreeably with white... 140 Bice
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Is an insoluble basic nitrate of bismuth, a pearly white powder of loose texture, turning grey on exposure, and blackened by sulphuretted hydrogen. It is chiefly used as a cosmetic, but is said to injure the skin, rendering it yellow and leather-lik... A Black The General Contrast Or Harmonizing Colour Of Such Compounds
will consequently be more or less purple or blue. The number of browns is great, as may be seen by the following list. This list, however, is good, and includes a considerable proportion of permanent pigments. TTITLE ASPHALTUM, ... A Blue-green; And When It Tends To Crimson Or Purple A
... A Coarse Gritty Texture Is Peculiar To Smalt Whether It Be The Powder
... A Corrupt Name From Cendres Bleues The Original Denomination Probably
of ultramarine ashes, is of two kinds, the natural and artificial. The first is a blue mineral found near copper mines, while the last is simply a verditer. ... A Deep Orange Like Blue Olive Is A Retiring Colour The Most So Of
all the colours, being the penultimate of the scale, or nearest of all in relation to black, and last, theoretically, of the regular distinctions of colours. Hence its importance in nature and painting is almost as great as that of black; it divides t... A Mixture Which Is Also Known As Brunswick Green Fine Bright Greens
they are suited to the ordinary purposes of mechanic painting, but are quite unfit for the artist's craft, chrome yellow reacting upon and ultimately destroying Prussian blue when mixed therewith. For the latter, cheap cobalts and ultramarines are pre... A Mixture Will Slowly But Surely Lose The Colour For Which It Was
... A Pure Azure Like A Spot Of Light While Their Ground The Prussian
... A Sample Which Parts With Its Prussiate To Cold Water Is Quite
unfitted for the palette, for which the most perfect specimen is none too stable. In spite of the learned researches of Professor Williamson, whose name is as closely connected with the pigment as are the names of Schunck and De La Rue with madder ... All Cases Add The Property Of Being Innoxious As This However
cannot be, and colours are by no means to be sacrificed on that account, cleanliness and avoiding the habit of putting the brush unnecessarily to the mouth, so common in water-painting, are sufficient guards against any possibly pernicious effects fro... Also Called English And Dutch Pink Is An Absurd Name For A Stronger
and richer kind of yellow lake, warmer in tint and more powerful than the preceding. It is a rich transparent yellow, yielding a variety of fine foliage tints by admixture with indigo and sepia in different proportions. These three colours with burnt ... Also Called Jaune Minerale Jaune De Cologne Or Cologne Yellow
...