All Chromatography Page 7
Olive Rinman's Green
A compound analogous to cobalt green may be made, of an olive hue, with more body, and equally stable. ...
Olive Scheele's Green
Cupric arsenite, when heated, gives off arsenious acid and water, leaving a residue of arsenide of copper and copper arseniate. A series of olive colours is so afforded, which are as durable as their original pigment, and might with advantage be sub...
Olive Schweinfurt Green
is likewise furnished by gentle calcination. It may be directly prepared by mixing boiling aqueous solutions of equal parts of crystallised verdigris and arsenious acid. An olive-green precipitate is immediately formed, which is apt, without due pre...
Olive Terre Verte
We have obtained a very beautiful olive from terre verte by simply changing its hue. In oil, especially, the colour so produced would be found of service for autumn foliage, or richly painted foregrounds. A simple original pigment, consisting wholly...
of a dull orange colour, is an orange protoxide of lead or massicot. Like litharge, it may be employed in the preparation of drying oils, and, being a better drier than white lead, may be substituted for it in mixing with pigments which need a sicca...
or Realgar, has also been called Red Orpiment, improperly, since it is a brilliant orange, inclining to yellow. There are two kinds, a native ...
Paille De Mil
Or African Cochineal, is a substance obtained from Africa. Whether it has received its name of cochineal from its appearance or origin is not clear, but it behaves more like galls and sumac than cochineal, though it does give a kind of red with alum...
a pigment unknown to the modern palette, like most of our numbered italicised colours, is of the nature of blue or vine black. Very soft and of a fine bluish-gray, it is fitted for flesh, or for mixing with whites or yellows in landscapes. ...
or Almond Black, made by burning the stones of fruits, the shell of the cocoa-nut, &c., is a violet-black, once much used by Parisian artists. Bouvier believes it to be a good black, but at the same time sensibly asks, of what use is it to have a bl...
The seeds of which afford a red colour, has been investigated by the French, but described as inferior to existing reds both in brilliancy and stability. ...
The metallic compounds formed by the combination of persulphomolybdic acid with a base are pulverulent, in many cases of a red colour, and for the most part insoluble in water. With barium, the acid furnishes a yellowish-red powder, insoluble in, bu...
With mercurous nitrate, the platinocyanide of potassium forms a thick smalt blue, and the platinidcyanide a dark blue precipitate. The compound is a mixture of platino- or platinidcyanide of mercury and mercurous nitrate. Upon the presence of the la...
Our own opinion of this costly preparation is that the good qualities of the product do not justify its price. It may be obtained as a bright, rich, deep yellow, of considerable transparency; but the colour is acted upon by foul gas and exposure. Ev...
The same Prussian blue which gives a brown when burnt in the open air, yields a black when calcined in a close crucible. Very intense, very soft and velvety, and very agreeable to work, this bluish-black dries much more promptly than most other blac...
Browns And The Cold Semi-neutral Grays Marrone Is Practically To
Also Called Scarlet Chrome Is A Bright Chromate Of Lead Of An
Belong The Dutch And Flemish Schools; The Sensible Which Aims At
Composition Chemical Analysis Has Shown Several Of The Blues To Be
Less Known As English Red Prussian Red And Scarlet Ochre True
Olive In Dark Green; Russet And Citrine In Dark Orange The
Pitch And [greek: Kallos] Ornament The Blue Is Named Pittacal
Pigment The [greek: Kinnabari] Of The Greeks And The Minium--a Term
Peculiar Red Mineral Orange
For Artists Such Are Harding's And Macpherson's Tints Composed Of
We Have Adopted The Term Marrone Or Maroon As It Is Sometimes Called
Softer Texture Some Of My Friends Says Bouvier Call It Beggars'
Russet Hues Of Autumn Foliage Where Purple And Orange Have Broken Or
Uniform Colour Thus Composed Is The Citrine Colour Of Fruit And