382 Miscellanies. 
more brilliant than that which the chrome yellow produces, and 
whose employment is so dangerous. . 
Compounp Cotors.—Green.—This color may be produced from 
a mixture of blue and of various yellows; but the shade which is the 
most beautiful is obtained from the Prussian or Berlin blue and the 
graine de Perse. | i 
Violet.—Indian woods, Berlin blue. By various mixtures, all 
desirable tints are obtained. 
Liquors.—I\n coloring liquors, the preceding colors may be em- 
ployed; but some others may be necessary which are derived from 
the following substances. 
Blue liquors.—Indigo dissolved in alcohol. ‘The solution is made 
by treating indigo with sulphuric acid, and pouring alcohol into the 
liquor, which takes up the coloring matter. 
Substances whose use in confectionary is dangerous.—All mineral — 
substances, Prussian blue excepted, particularly chrome yellow, which 
is formed of two poisonous ingredients. 
Schweinfurt green, a violent poison which contains copper and | 
arsenic. . 
Some distillers employ sugar of lead for the clarification of their 
liquors; a process which is liable to occasion the most serious acci- 
dents, as this substance is a violent poison. 
Much care is requisite also as respects the colored papers employ- 
ed by confectioners; as children frequently chew them and are ex- 
posed to be poisoned if they are stained by mineral substances.— 
Recueil In. Dec. 1830. 
4. To protect cron and steel from rust.—Heat the object until it 
burns the hand; after which, rub it with very white wax. Heat it a 
second time in order to melt off the wax, and then rub it briskly with 
a piece of cloth or leather to impart to it brilliancy. This operation 
renders the metal proof against rust from exposure to the atmosphere. 
—Idem. » 
5. A new plant which furnishes a wholesome and limpid water.— 
The English have discovered in the countries which they have re- 
cently added to their empire in India,.a shrub, the stem of which 
when cut, furnishes a great quantity of pure and limpid water. The 
natives are very familiar with this precious property ; in consequence 
of which, it is very rare to find a whole and well preserved plant 
