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Hexagonal System – Hill

Hexagonal System

in crystallography and mineralogy, one of the as hexyl- HEXYL IODIDE

Hexyl Iodide

in chemistry, C6H12 I, a secondary hexyl-iodide, is obtained by treating mannite with strong hydriodic acid.

Heyward

THOMAS, JR., an American jurist and signer of the Declaration of Independence. He was born in South Carolina in 1746. From 1775 to 1778 he was a member of the Continental Congress. In 1780 he was elevated to the Bench of his native State. During the Revolutionary War he served as captain of artillery. He died in 1809.

Heywood

a town of England in Lancashire. It is about ten miles N. of Manchester. It is an important industrial center, having manufactures of cotton, iron, brass, locomotives, and chemicals. There are extensive coal mines in the neighborhood. Pop. about 27,000.

Hibbing

a city in Minnesota, in St.

Louis co. It is on the Missabe and Northern, and the Great Northern railroads. Situated in the Mesaba iron ore range, the most productive iron mining region in the United States, it has steadily grown in industrial importance. There are five important mines within the city limits. Pop. (1910) 8,832; (1920) 15,089.

Hibernia

the ancient name of Ireland, applied to it first by Julius Cæsar. Aristotle mentions this island by the name of Ierne; Pomponius Mela calls it Iverna; Ptolemy, Iuvernia.

Hiddenite

a variety of Spodumene, discovered by W. E. Hidden in 1879 in North Carolina. Green or yellowish green in color; specific gravity, 3.19. When cut and polished, Hiddenite is used as a gem, and is sometimes known as the lithia emerald. Chemically it is a lithium aluminum silicate.

Hierarchy

the name used to designate the whole sacred governing and ministering body in the Church, distributed according to its several gradations.

High-Pressure

operated by a large measure of force of some sort.

A high-pressure alarm in a steam en- HIGH EXPLOSIVES. See EXPLO- gine is an alarm intended to give notice SIVES.

High German

originally the Teutonic dialect spoken in the S. and elevated parts of Germany, as distinguished from Platt Deutsch or Low German, spoken in the N. and more lowland portions of Germany.

Highland Park

a city of Michigan in Wayne co. Its chief industry is the manufacture of automobiles and motors. The development of this industry has greatly increased its industrial importance in recent years. Pop. (1910) 4,120; (1920) 46,499.

Hill

ROWLAND, an English preacher, noted for his humor and eccentricities; born in Hawkstone, Shropshire. England, August 23, 1744. He was ordained in the Anglican Church, but embracing the views of the Calvinistic Methodists, he soon began to preach in barns and meeting-houses, streets, fields, an and highways. In 1783 he laid the foundation of Surrey Chapel in the