HOW AND WHERE WE GET THE SALT FOR OUR FOOD
THE PRODUCTIVE CALIFORNIA SALT BEDS
The United States produces one-fourth of the entire output of the world. Salt was one of the first two great articles of international commerce in the history of the world trade.
AN UNDERGROUND PASSAGE WAY THROUGH SOLID SALT
The most wonderful salt mines in the world are those of Galicia, in Austria. In this region there is a mass of salt estimated to measure 500 miles in length, 20 miles in breadth, and 1,200 feet in thickness.
SCIENTIFIC TERMS USED IN THE EARTH SCIENCES
Acanthodus (a-kan-thō´dus).—Fossil fish, having thorn-like fins.