Salt.

Common Salt varies in purity and sometimes contains salts of lime, magnesia, and potash. But as those are more soluble in water than common salt, it is easy to remove them in the process of manufacture. Our culinary salt comes from several sources; rock salt deposits or mines, sea water, and salt springs.

There are numerous brands of salt which are freed from all impurity, ground to various degrees of fineness, and put up in barrels, sacks, bags and packets of all sizes; also in stone jars.

Celery salt is good common salt mingled with the finely ground seeds of celery.

Besides the finer qualities for table use, there are varieties specially adapted for salting and pickling meats, fish, etc.; lump rock salt for cattle, hay salt, etc. The bitter salts of lime, magnesia, etc., attract moisture more than common salt, hence dryness is a sign of purity.