Gambodium Gambogium &c Is The Produce Of Several Kinds Of Trees
: ON THE PRIMARY, YELLOW.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 Celandine yields abundantly, in the
same manner, a beautiful yellow juice of the same properties as gamboge.
Gamboge is of a gum-resinous nature and clear yellow colour. It is
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touches shines too much and verges upon brown. When properly used, it is
more durable than generally reputed, both in water and oil; and
conduces, when mixed with other colours, to their stability and keeping
their place, on account of its gum and resin. It is deepened in some
degree by ammoniacal and impure air, and somewhat weakened, but not
easily discoloured, by the action of light. Time effects less change on
this colour than on other bright vegetal yellows; but white lead and
other metalline pigments injure, while terrene and alkaline substances
redden it. In water it works remarkably well, and forms an opaque
emulsion without grinding or preparation, by means of its natural gum;
but is with difficulty employed in oil, &c., in a dry condition. It
dries well, however, in its natural state, and lasts in glazing when
deprived of its gum. With regard to other colours it is perfectly
innocent, and though a strong medicine, is not dangerous or deleterious
in use. Gamboge has been employed as a yellow lake, precipitated upon an
aluminous base; but a better way of preparing it is to form a paste of
the colour in water, and mix it with lemon yellow, with which pigment
being diffused it goes readily into oil or varnish. Glazed over other
colours in water, its resin acts as a varnish which protects them; and
under other colours its gum acts as a preparation which admits
varnishing. It is injured by a less degree of heat than most pigments.
In landscape, gamboge affords with indigo or Antwerp blue clear bright
greens, and with sepia a very useful sober tint. For sunrise and sunset
clouds, a mixture of gamboge and cadmium yellow will be found useful.
TTITLE EXTRACT OF GAMBOGE
Is the colouring matter separated from its greenish gum and impurities
by solution in alcohol, filtration and precipitation, by which it
acquires a powdery texture, rendering it miscible in oil, &c., and
capable of being employed in glazing. At the same time it is improved in
colour, and retains its original property of working well in water with
gum. Gamboge is likewise soluble in caustic potash, forming a red
liquid, from which it is thrown down by acids.
TTITLE INDIAN YELLOW
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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 ... In Furnishing Or Setting The Palette Philosophically And Upon
principle, it is necessary to supply it with pure blue, red, and yellow; to oppose to these an orange, of a hue that will neutralise the blue--green, of a hue that will neutralise the red--and purple, of a hue that will neutralise the yellow; and so o... In Respect To Pigments Individually It May Be Observed That--other
things being equal--those pigments are the most beautiful which possess the most colour, whether they be light or dark, opaque or transparent, bright or subdued. There are some which exhibit all their colour at a glance: there are others that the more... Include The Several Varieties Known As--vermilion Deep Vermilion
... Incorrectly Called Cullen's Earth Is A Native Bituminous Earth
containing less bitumen than Cassel earth, and therefore drying more quickly. Darker than that variety, it is less transparent, and covers better. In its general qualities it resembles Vandyke brown, except that in combination with white, it affords a... Intellectual Which Aspires To The Ideal In Beauty Grandeur And
sublimity, and corresponds with the Greek, Roman, and Florentine ... Intermedia Are Opposed To Contrasts Or Extremes; And Upon The Right
management of contrasts and gradations depend the harmony and melody, the tone, effect, and general expression of a picture. Thus, painting is an affair of judicious contrasting so far as regards colour, if even it be not such altogether. ... Introduced With Caution When Hue Is Of Greater Importance Than Shade
Even when employed as a shadow, without much judgment in its use, black is apt to appear as local colour rather than as privation of light; and black pigments obtained by charring have a tendency to rise and predominate over other hues, subduing the m... Is A Native Earth; Sometimes Brown Ochre Burnt And Called Brown Red
It is less pure in hue and clear in its tints than light red, and is best reserved for dark and vigorous shades and touches. For draperies of a dusky red it is well suited, or even for the shadows of bright-red drapery. In dead colouring it is very va... Is A Pigment Long Employed In India Under The Name Purree But Has Not
many years been introduced generally into painting in Europe. It is imported in the form of balls of a fetid odour, and is produced from the urine of the camel. It appears to be a urio-phosphate of lime, and is of a beautiful pure yellow colour and li... Is Important And Consists In The Blending And Gradating By Mixture
... Is In Reality We Grant That In Certain Objects Blue Is A Sign Of
distance, but that is not because blue, as a mere colour, is retiring; but because the mist in the air is blue, and therefore any warm colour which has not strength of light enough to pierce the mist is lost or subdued in its blue. Blue in itself, how... Is Merely A Faded Blue The Blacks Are Both Of Vegetable And Mineral
origin, having been obtained from a variety of substances in a variety of ways. But, as shown by Layard in his discoveries at Nineveh, a knowledge of colouring was not confined to the Egyptians; it was likewise possessed by the Assyrians. The paint... Is That Of Warmth And Coolness Upon Which Depend The Toning And
... Is The Commercial Name Of Green Lakes Prepared From Sulphate Of
copper. These vary in hue and shade, have all the properties of the common non-arsenical copper-greens, and, not being subject to change of colour by oxygen and light, stand the weather well, and are excellent for the use of the house-painter, &c. Hav... Is Thence Sometimes Called Bladder Green When Good It Is Of A Dark
colour and glossy fracture, extremely transparent, and a fine natural yellowish green. This gummy juice, inspissated and formed into a cake, is occasionally employed in flower painting. It is, however, a very imperfect pigment, disposed to attract the... It Is Common To Call The Solution In Turpentine Asphaltum And The
... It Is The Archeus Or Prime Colour Of The Tertiary Citrine;
characterises in like manner the endless number of semi-neutral colours ... It Is True That A Mixture Of Black And White Is Of A Cool Hue Because
black is not a primary colour, but a compound of the three primary colours in which blue predominates, a predominance which is rendered more sensible when black is diluted with white. As to the colour of the sky, in which light and shade are combined,... Jaune De Mars Jaune De Fer Iron Yellow &c Is An Artificially
prepared iron ochre, of the nature of sienna earth. In its general qualities it resembles the ochres, with the same eligibilities and exceptions, but is more transparent, as well as purer, clearer, richer, and brighter. Like them it is quite permanent... Juice Of A Plant Named Houng Hoa To Give It Brightness Of Tone
According to an analysis by M. Proust, the better kinds contain about two per cent. of camphor. By some, the pigment known as Sepia has been supposed to enter into their composition. ... Known As Liquid Prout's Brown Has Been Extensively Employed This
contains less fixative than the indelible ink, and is the vehicle with which nearly all Samuel Prout's drawings were executed. TTITLE LEITCH'S BROWN is a permanent pigment peculiar to water painting. A most beautiful olive brown, soft and rich, i...