Desiccation Or Drying The Well-known Additions Of The Acetate Or
: ON COLOURS AND PIGMENTS GENERALLY.sugar of lead, litharge, and sulphate of zinc, either mechanically
ground, or in solution, for light colours; and japanner's gold size, or
oils boiled upon litharge, for lakes; or, in some cases, manganese and
verdigris for dark colours, are resorted to when the pigments or
vehicles are not sufficiently good dryers alone. It would be well if
lead and copper could be banished from the list of siccatives
altogether: assu
texture of his work should employ them except in extreme cases, and in
the smallest possible quantity. The best of pigments may be ruined by
their injudicious use, and obtain a character for fugacity which they in
no way deserve. It requires attention that an excess of dryer renders
oil saponaceous, is inimical to drying, and is otherwise injurious. Some
colours dry badly from not being sufficiently edulcorated or washed.
Sulphate of zinc, as a siccative, is less powerful than acetate of lead,
but is far preferable in a chemical sense. It is supposed erroneously to
set the colours running; which is not positively the case, though it
will not retain those disposed to move, because it wants the property
the acetate of lead possesses, of gelatinizing the mixture of oil and
varnish. These two dryers should not be employed together, since they
counteract and decompose each other, forming two new substances--acetate
of zinc, which is a bad siccative, and sulphate of lead, which is
insoluble and opaque. The inexperienced ought here to be guarded against
the highly improper practice of some artists, who strew their pictures
while wet with acetate of lead, or use that substance in some other
mode, without grinding or solution; which, though it may promote present
drying, will ultimately effloresce on the surface of the work, throw off
the colour in sandy spots, and expose the paintings to peculiar risk
from the damaging influence of impure air.
It is not always that ill drying is to be attributed to the pigments or
vehicles, the states of the weather and atmosphere have great influence
thereon. The direct rays of the sun are powerfully active in rendering
oils and colours siccative, and were probably resorted to before dryers
were--not always wisely--added to oils, particularly in the warm climate
of Italy. The ground may also advance or retard drying, because some
pigments united by mixing or glazing, become either more or less
siccative by their conjunction. Many other accidental circumstances may
likewise affect drying; and among these none is to be more guarded
against by the artist than the presence of soap and alkali, too often
left in the washing of his brushes, and which, besides other bad
results, decompose and are decomposed by acetate of lead and most
siccatives. In such cases desiccation is retarded, streaks and patches
are formed on the painting, and the odium of ill drying falls upon some
unlucky pigment. To free brushes from this disadvantage, they should be
cleansed with linseed oil and turpentine. Dryers should be added to
colours only at the time of using them, because they exercise their
drying property while chemically combining with the oils employed,
during which the latter become thick or fatten. Too much of the
siccative will, as before noticed, often retard drying.
The various affinities of pigments occasion each to have its more or
less appropriate dryer; and it would be a matter of useful experience if
the habits of every colour in this respect were ascertained. It is
probable that siccatives of less power generally than the compounds of
lead and copper might come into use in particular cases, such as the
oxides of manganese, to which umber and the Cappagh browns owe their
drying quality.
To other good attributes of pigments, it would be well if we could in
More
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Carmine Pink Madder Rose Madder Madder Lake And Liquid
... Catechu Is An Extract Of The Khair Tree Or Acacia Catechu Of Bombay
Bengal, and other parts of India. With the exception of such earthy matters as are communicated to it during the preparation, or are added purposely as adulterants, catechu is entirely soluble both in water and alcohol. An aqueous solution has a reddi... Charcoal Liege Or Vine Black Is A Well-burnt And Levigated
charcoal prepared from vine twigs, of weaker body than ivory or lamp black, and consequently better suited to the grays and general mixed tints of landscape painting, in which it is not so likely to look black and sooty as the others may do. Of a cool... 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 ... Cory's Yellow Madder Or Cory's Madder Is Classed Among The Browns
for the same reason that Italian Pink was ranked among the yellows. It was stated in the eighth chapter that no true madder yellow, brilliant and pure, exists as a pigment at the present day, and certainly this preparation can lay no claim to the titl... Crimson To A Delicate Rose And Are Known As Madder Carmine Field's
... D'encouragement Of Paris Which Was Won In 1828 By M Guimet It Is
fitting that the discoverer of a colour should excel in its manufacture, and to this day Guimet's ultramarine is the finest made. As an instance of how the researches of different men may, almost simultaneously, lead to the same results, it is curious... Deep Green; Or When The Russet Inclines To Orange A Gray Or
... Described As Cory's Brown Madder
... Desiccation Or Drying The Well-known Additions Of The Acetate Or
sugar of lead, litharge, and sulphate of zinc, either mechanically ground, or in solution, for light colours; and japanner's gold size, or oils boiled upon litharge, for lakes; or, in some cases, manganese and verdigris for dark colours, are resorted ... Distilled Verdigris Or More Properly Refined Verdigris The Best Is
made at Montpellier in France, and is a sub-acetate of copper of a bright green colour inclining to blue. The least durable of the copper greens, it soon fades as a water-colour by the action of light, &c., and becomes first white and ultimately black... Drive The Colour Too Bare Ie Never To Empty The Brush Too Closely
but always to replenish before more is actually required. This first wash of colour not only gives a tone to the paper, but secures the pencil sketch from being rubbed out. The reason why, in this compound, yellow ochre, as a yellow, is preferred t... Egypt The Greeks Obtained The Knowledge Of Their Ars Chromatica
which they are said to have carried by gradual advances during several centuries, from the monochromatic of their earlier painters, to the perfection of colouring under Zeuxis and Apelles, 450 to 350 B.C. Unfortunately, not long after, or about 300 B.... Employed Under The Name Of Liquid Asphaltum
TTITLE BISTRE is extracted by watery solution from the soot of wood fires, whence it derives a strong pyroligneous scent. It is a very powerful citrine-brown, washes well, and has a clearness suited to architectural subjects. Its use is confined ... Enamel Blue Vienna Blue Paris Blue Azure &c And Are
obtained by the action of heat on mixtures of earthy or metallic bases with cobalt. They are divisible into three classes--the stannic cerulian blue, the aluminous cobalt blues, and the siliceous smalts. Of these, the first possesses the least depth; ... English Red Persian Red Prussian Red Spanish Red Brown
... English Vermilion Spanish Brown Majolica Redding Ruddle
... Even Now It Is Urged By Some To The Disparagement Of The British
school, that it excels in colouring; as if this were incompatible with any other excellence, or as if nature, the great prototype of art, ever dispensed with it. The graphic branches of painting, owe everything to colour, which, if it does not constit... Example Be In A State Which Chemists Have Termed Protoxide They Are
liable to absorb oxygen on exposure to light, air, or moisture, and ... Extract From Mr Aaron Penley's English School Of Painting In Water
... Extracted From The Bignonia Chica By Boiling Its Leaves In Water
decanting the decoction, and allowing it to cool, when a red matter falls down, which is formed into cakes and dried. Insoluble in cold water, it dissolves in alcohol and alkalies; is precipitated from alkaline solutions by acids without alteration; a... Extremes And Greys Their Intermediates Thus Black And White Are
constituted of, and comprise latently, the principles of all colours, and accompany them in their depth and brilliancy as shade and light. ... Ferrocyanide Of Iron &c Was Accidentally Discovered In 1710 By
Diesbach, a colour-maker at Berlin. It is a compound of iron and cyanogen, of varying composition, formed by adding yellow prussiate of potash to a persalt of iron, or by oxidizing the precipitate obtained from the prussiate and a protosalt. The fines... Field's Purple Or Purple Rubiate Is The Only Durable Organic
purple the palette possesses. Marked by a soft subdued richness rather than by brilliancy, it leans somewhat towards marrone, and affords the greatest depth of shadow without coldness of tint. Unfortunately, in the whole range of artistic pigments the... Fineness Of Texture Is Produced By Extreme Grinding And Levigation
Pigments ground in water in the state of a thick paste, are miscible in oil and dry therein firmly; and in case of utility or necessity, any water-colour in cake, being rubbed off thick in water may be diffused in oil, the gum acting as a medium of un... Firm Line--not Wash--of Carmine (of Madder Preferable--ed) Passed
within the outline on the shade side only of the leaf, will give to the whole the look of a bright scarlet surface, but with an indescribable superadded charm, that no merely flat colour can possess." In the same branch of art, illumination, cadmium o... For Artists Such Are Harding's And Macpherson's Tints Composed Of
pigments which associate cordially, and sold ready prepared in cakes and boxes for miniature and water painting. Of the four grays in use--mineral gray, ultramarine ash, neutral tint, and Payne's gray--the two first are quite unchangeable, and the o... From The Semi-neutral Gray In Not Being Coloured By Any Primary
secondary, tertiary, or semi-neutral; hence any blue, purple, olive, or gray added to it, at once destroys the neutrality of grey, and converts it into gray. Thus easily defiled and changed in class, grey is rather a theoretical than a practical colou... Fugitive But We May Briefly Explain It By Saying When Vitreous
pigments are reduced to that extreme state of division which the palette requires, they lose the properties they possess in a less finely divided ... Furnishes The Blue Are Added To Brown Or Yellow Frit To Obtain A
velvety black glass. Similarly the dyer proceeds to dye black upon a deep blue basis of indigo, with the ruddy colour of madder and the yellow of quercitron, &c. Some of the best blacks and neutrals of the painter are those formed with colours of s... Gambodium Gambogium &c Is The Produce Of Several Kinds Of Trees
The natives of the coast of Coromandel call the tree from which it is principally obtained Gokathu, which grows also in Ceylon and Siam. From the wounded leaves and young shoots the gamboge is collected in a liquid state and dried. Our indigenous herb... General Effect Of A Picture Fourthly There Is The Contrast Of Colour
... Green As Well As Subordinately The Tertiaries Russet And Olive
It also enters in a very subdued degree into cool, semi-neutral, and broken colours, and assists in minor proportion with blue and red in the ... Green Mitis Green &c Is A Cupric Aceto-arsenite Prepared On The
large scale by mixing arsenious acid with acetate of copper and water. It differs from Scheele's Green, or cupric arsenite, in being lighter, more vivid, and more opaque. Powerfully reflective of light, it is perhaps the most durable pigment of its cl... Green Saxon Green French Green African Green Persian Green
... Green Schweinfurt Green Verdigris Green Bice Green
... Greens And With Red In All Purples Blue Characterizes The Tertiary
... Grey Is Neutral And Is Composed Of Or Can Be Resolved Into Black And
white alone, from a mixture of which two colours it springs in an infinite series. It must be observed that each colour may comprehend an indefinite series ... Gross And Material Which Is Content With Mere Nature And To Which
... Haerlem Blue Berlin Blue Mineral Blue Is A Lighter And
somewhat brighter Prussian blue, with less depth and less permanence. It is a species of lake, having a considerable proportion of aluminous base, to which its paler tint is due. As the stability of Prussian blue rests in a great measure on the marvel... Harmonizing Contrast Of Citrine Is A Deep Purple Which May Be Seen
beautifully opposed to it in nature, when the green of summer declines. As autumn advances, citrine tends towards its orange hues, including the colours termed aurora, chamoise, and others before enumerated under the head of yellow. It is the most adv... Have To Be Learnt For Each Pigment Has Its Own Peculiar Habitudes
chemical, physical, artistic; but if they be good and durable, no amount of time and study spent upon them is thrown away. To think less of the quality of one's materials than of the effects which can be produced with them is mistaken policy; and to b... Highest Order Merits Regard Orient Yellow Distinguished For Its
lustrous golden hue, resembling a bright Indian yellow. Dazzling in ... Hues Required To Obtain A Pure Green Which Consists Of Blue And
yellow only, a blue should be chosen tinged with yellow rather than with red, and a yellow tinged with blue. If either a blue or a yellow were taken, tinged with red, this latter colour would go to produce some grey in the compound, which would tarnis... In All The Variety Of Its Hues Composed Of Yellow And Red A True Or
perfect orange is such a compound of red and yellow as will neutralize a perfect blue in equal quantity either of surface or intensity; and the proportions of such compound are five of perfect red to three of perfect ...