APPENDIX.
I.
ARTICLES EMPLOYED IN CHEMICAL TESTING.
ACETATE OF SODIUM.
.
(Also employed in the preparation of Acetic Ether.)
BENZOL.
A colourless volatile liquid, obtained from coal tar, and consisting chiefly of benzol, . Specific gravity about 0.850.
BENZOLATED AMYLIO ALCOHOL.
Mix together three volumes of benzol and one of amylic alcohol. Decant the supernatant fluid from any deposited water.
CHLOBIDE OF BARIUM.
.
COPPER FOIL.
Pure metallic Copper, thin and bright.
FERRICYANIDE OF POTASSIUM.
Synonym.—Red Prussiate of Potash.
.
Test.—Its aqueous solution gives no precipitate with a dilute solution of a pure ferric salt.
GOLD, FINE.
Gold, free from metallic impurities.
