The Grinding Sufficient Only Of Clear Cold Jelly Of Gum Tragacanth As
: ON COLOURS AND PIGMENTS INDIVIDUALLY.will connect them into a body, and attach them to the paper in painting.
Cold starch will answer the same purpose.
Constant white is a sulphate of baryta, found native and known under the
name of heavy-spar, or prepared artificially by adding sulphuric acid,
or a soluble sulphate, to a solution of a barytic salt. In the first
mode, if the white be not well purified from free acid, it is apt to act
injuriously on some pigments. Sulphate of baryta is often used for the
purpose of adulterating white lead, the native salt being ground to fine
powder, and washed with dilute sulphuric acid, by which its colour is
improved, and a little oxide of iron probably dissolved out. Whether
native or artificial, the compound is quite unaffected by impure air,
and is not poisonous.
TTITLE LEAD WHITES
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Sometimes Called China Or Chinese Ink Is Chiefly Brought From
China in oblong cakes, of a musky scent, ready prepared for painting in water. Varying considerably in body and colour, the best has a shining black fracture, is finely compact, and homogeneous when rubbed with water, in which, when largely diluted, i... Sometimes Called Dewint's Green Is An Arbitrary Compound Or Mixed
green, of a fine deep olive colour and sober richness. Advisedly or not, it is used in landscape, sketching, &c.; but only in water, olive lake supplying its place in oil. Like many other compound pigments, it is either permanent, semi-stable, or fugi... Sometimes Designated Drop Gum And Variously Written Gamboge
... Spanish Red Is An Ochre Differing Little From The Above
TTITLE PURE SCARLET, ... Spelt With An E The Two Names Being Occasionally Confounded Gray
is semi-neutral, and denotes a class of cool cinereous colours, faint of hue; whence we have blue grays, olive grays, green grays, purple grays, and grays of all hues in which blue predominates; but no yellow or red grays, the predominance of such hue... Splendid Viridian A Green Nothing But Fire Will Change And No
mixture of blue and yellow will afford. Clear, bright, and transparent as the emerald, it rivals velvet in its soft gorgeous richness. With this and Aureolin a series of beautiful foliage tints may be formed, sparkling with sunshine, as it were. Ot... State The Best Smalt In Lumps Appears Black Yields A Blue Powder On
grinding, becomes paler on further grinding, and may be almost decolourised by continued and excessive grinding. Smalt, it has been stated, is merely a blue glass; and when a piece of blue glass, or a blue crystal of sulphate of copper, is reduced to ... Subdued Blue These Are Often Beautifully Opposed In Nature Being
medial accordances or in equal relation to light, shade and other colours, and among the most agreeable to sense. Russet, as we have said, partakes of the relations of red, but it is a hue moderated in every respect, and qualified for greater breadt... Subordinately Into The Two Other Tertiaries Citrine And Olive; Goes
largely into the composition of the various hues and shades of the ... Subordinates For Orange And Purple Being The Immediate Constituents
of russet, and red being a component part of each of those colours, it follows that red enters doubly into russet, while yellow and blue appear but once therein. The proportions of its middle hue are eight blue, ten red, and three yellow, of equal int... Sufficient To Make The Sulphur Bite Into The Base This Opinion
indeed, extends to all metallic sulphides, and our belief is, that if vermilions were made generally by wet processes, they would not be found the permanent pigments they undoubtedly are. TTITLE MUTRIE YELLOW. Under this name a lemon sulphide of ... Swedish Green Olympian Green Imperial Green Mitis Green
... Terre De Cassel Or Corruptly Castle Earth Is Specially An Oil
pigment, similar to burnt umber but of a more russet hue. It is an earth containing bitumen, a substance which, with pit-coal, lignite or brown coal, jet, petroleum or rock oil, naphtha, &c., is looked upon as a product of the decomposition of organic... Tertiary Colours Are Three Only Citrine Russet And Olive
Each of these is composed of, or can be resolved into, either two secondary colours, or the three primaries. Thus, citrine consists of green and orange, or of a predominant yellow with blue and red; russet is compounded of orange and purple, or of a p... Tertiary Olive: Hence Its Relations And Accordances Are More General
and its contrasts more agreeable with all colours, than those of any other individual colour. Accordingly it has been adopted very wisely in nature as the common garb of the vegetal creation. It is, indeed, in every respect a central or medial colour,... Texture And What Is Called Body In Colours; Yet Every Pigment Has Its
peculiarities in respect to working both in water and oil, and these must become matter of every artist's special experience. Some of the best pigments are most difficult of management, while some ineligible colours are rich in body and free in workin... Than Themselves; And Into Painters Whose Motto Is Vita Brevis Est Ars
... The Blue Colouring Matter Of The Lapis Lazuli A Stone Chiefly Brought
from China, Thibet, and the shores of Lake Baikal. About the antiquity of the stone, and its colour, much has been written, and many conflicting statements have been made; but there is little doubt that our lapis lazuli was the sapphire of the ancient... The Book; Lest His Aim Be Defeated Of Reflecting In A Moderate-sized
mirror the palette as it is and might be at the present day. Arrived at age, as it were, in its twenty-first chapter, this treatise may fitly conclude with Black, the last of the series of colours. Let us hope the maxim of Sir Joshua Reynolds, that su... The Grinding Sufficient Only Of Clear Cold Jelly Of Gum Tragacanth As
will connect them into a body, and attach them to the paper in painting. Cold starch will answer the same purpose. Constant white is a sulphate of baryta, found native and known under the name of heavy-spar, or prepared artificially by adding sulphu... The Laque De Garance Which Was Tinged With The Rouge Of Carthamus
and was of course inferior in durability. As, however, liquid ammonia and alkalis generally dissolve the colours of cochineal, lac, and safflower, the test is simple. If the liquid remain uncoloured on adding ammonia to an assumed madder lake, in all ... The Name Of Giallolino And Was Variously Of A Pleasing Light Warm
yellow tint. It was opaque and of good body, not altered by the light of the sun, and might be used with comparative safety in oil or varnish, under the same management as the whites of lead. Like these, however, it was liable to change even to blackn... The Pigments Liable To Injury From Sulphuretted Hydrogen &c Are
notably those obtained from lead and copper; and that treacherous compound of iodine and mercury, known as pure scarlet. ... The Reds Seem For The Most Part To Be Composed Of Oxide Of Iron Mixed
with lime, and were probably limited to iron earths and ochres, with a ... The Same In Light And Shade Or White And Black Which Mix With
clearness. Now, there are only two ways in which this distinctness in union of contrasts can be effected in practice: the one is by hatching or breaking them together in mixture, without compounding them uniformly; and the other is by glazing, in whic... The Secondary Orange And Its Near Relatives Scarlet &c; And With
... The Secondary The Tertiary And The Semi-neutral
... The Semi-neutral Brown As The Extreme Primaries Blue And Yellow
when either compounded or opposed, afford, though not the most perfect harmony, yet the most pleasing consonance of the primary colours; so the extremes, purple and orange, yield the most pleasing of the secondary consonances. This analogy extends lik... The Term Brown Then Denotes Rightly A Warm Broken Colour Of Which
... The Tertiary Citrine On The Side Of Shade And Less Perfectly So Of
... The Third And Last Of The Primary Or Simple Colours Is Blue Which
bears the same relation to shade as yellow to light. Hence it is the most retiring and diffusive of all colours, except purple and black; and all colours have the power of throwing it back in painting, to a greater or less extent, in proportion to the... Their Chief Source The Greens Consist Of Yellow Mixed With Copper
blue. The bluish-green which sometimes appears on Egyptian antiquities, ... There Are Five Classes Of Colours Viz:--the Neutral The Primary
... These Are False Appellations Of A White Lead Called Also French
... This Principle Of Contrast Applies Even To Individual Colours And
conduces greatly to good colouring. It may be carried with advantage into the variety of hue and tint in the same colour, not only as regards light and shade, but likewise with respect to warmth and coolness, as well as to colour and neutrality. Hence... Those Which Are Positive Or Definite; And The Three Colours Of Each
genus, united or compounded in such subordination that neither of them ... Thus Russet And Olive Compose Or Unite In Dark Purple; Citrine And
... Time On A Tree Of The Common Black Spruce (abies Nigra) In The
neighbourhood of Kingston. Having been but recently observed, a sufficient quantity had not been obtained for a complete series of experiments as to its nature and uses; but the habits of the insect, as well as the properties of the dye, seemed to ind...