At the inception of the industry kerosene came into the market as a dark yellow or reddish-coloured liquid, and in the first instance, the removal of colour was attempted by treatment with soda lye and lime solution.
Before that time it was believed that not only could individual oils and fats be distinguished from each other by colour reactions, but it was also maintained that falsification could be detected thereby.
Every distinct variety of rock has its own type of corrie, the peculiarities being marked both in the details of the upper cliffs and crags, and in the amount, form and colour of the screes.
Filter paper soaked with the clear solution is burnt, and the presence of gold is indicated by the purple colour of the ash.
The colour is usually red, forcibly recalling the Old Red Sandstone and Trias of England.
Albinos seem to be rather common; and as in other fishes (for instance, the tench, carp, eel, flounder), the colour of most of these albinos is a bright orange or golden yellow; occasionally even this shade of colour is lost, the fish being more or less pure white or silvery.
Barium and its salts can be readily detected by the yellowishgreen colour they give when moistened with hydrochloric acid and heated in the Bunsenflame, or by observation of their spectra, when two characteristic green lines are seen.
And xv.) make any treaty or alliance; coin money or make anything, save gold and silver coin, a legal tender; pass any bill of attainder or ex post facto law, or law impairing the obligation of contracts; have any but a republican form of government; grant any title of nobility; maintain slavery; abridge the privileges of any citizen of the United States, or deny to him the right of voting on account of race, colour or previous condition of servitude; deprive any person of life, liberty or property without due process of law; deny to any person the equal protection of the laws.
This comes from the usage in heraldry (first in French) for the colour equivalent to black, represented conventionally by a crosshatching of vertical and horizontal lines.
It is used as a pigment (cadmium yellow), for it retains its colour in an atmosphere containing sulphuretted hydrogen; it melts at a white heat, and on cooling solidifies to a lemon-yellow micaceous mass.