The oxide is a black or brown powder according as it is prepared from the exalate or sulphate, and when pure it is non-fluorescent, but mixed with gadolinia or alumina it possesses this property.
They live frugally, and are only prodigal in powder and human life.
The hydrate, Bi(OH) 3 i is obtained as a white powder by adding potash to a solution of a bismuth salt.
It is a brown-black powder soluble in hydrochloric acid, chlorine being simultaneously liberated.
The eyes, with very few exceptions, are black, large and of a long almond-form, with long and beautiful lashes, and an exquisitely soft, bewitching expressioneyes more beautiful can hardly be conceived: their charming effect is much heightened by the concealment of the other features (however pleasing the latter may be), and is rendered still more striking by a practice universal among the females of the higher and middle classes, and very common among those of the lower orders, which is that of blackening the edge of the eyelids both above and below the eye, with a black powder called kohl (Lane, Modern Egyptians).
Lead sesquioxide, Pb203, is obtained as a reddish-yellow amorphous powder by carefully adding sodium hypochlorite to a cold potash solution of lead oxide, or by adding very dilute ammonia to a solution of red lead in acetic acid.
Barbara at Kutna Hora, the royal castle of Karluv Tyn, the Powder Tower, the church of St.
The anhydrous salt is a colourless powder or porous mass, having an alkaline taste and reaction.
Calcium nitride, Ca 3 N 2, is a greyish-yellow powder formed by heating calcium in air or nitrogen; water decomposes it with evolution of ammonia (see H.
By making expectations explicit and public, these agreements reduce the number of sparks that can set off the powder keg of war.