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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...