Helmet – Hexachord
Helmet
a piece of defensive armor for the head; a defensive covering for the head.
Henry
FORT, an ancient fort erected on the site of the present town of Petersburg, Va., in 1646.
Heredity
the transmission from parent to offspring of physical and intellectual characters.
Hereford
the county-town of Herefordshire, England, 144 miles W.
N. W. of London. Its noble cathedral was built between 1079 and 1535, and so exhibits every variety of style from Norman to Perpendicular.
Herschelian Rays
non-luminous rays outside the red of the solar Sir William Herschel.
HERSCHELITE (named after Sir John Herschel), an orthorhombic, colorless or white translucent mineral of somewhat vitreous luster optically biaxial. Found at Acireale in Sicily.
Herstal
or HERISTAL, a city of Belgium in the province of Liège. It is on the left bank of the Meuse river.
It is an important iron and steel center and has munition works, manufactures of bicycles, etc. In the vicinity are important coal mines. Pop. about 23,000.
Hessite
an orthorhombic gray sectile mineral of metallic luster. Hard- Found in the Altai Mountains in a talcose rock, also in Transylvania and Hungary.
Hetman
or ATAMAN, the title of the head (general) of the Cossacks.
Heulandite
a monoclinic, transparent or translucent brittle mineral, of pearly luster, and white, red, gray, or brown color.
Hewes
JOSEPH, a signer of the Declaration of Independence, born at Kingston, N. J., in 1730. In 1763 he moved to Edenton, N. C., and in 1774 was elected to the Continental Congress, of which he was a member until his death in 1779.
Hexyl Alcohols
in chemistry, monatomic alcohols having the formula C₆H₁₃ (OH). Seventeen alcohols can exist, eight primary, six secondary, and three tertiary. Normal hexyl-alcohol, (CH3(CH2)CH2OH. It is obtained from the essential oil of Heracleum gibutyrate, along with octyl-acetic; the oil is saponified by alcoholic potash, and then fractionally distilled. The hexylalcohol boils at 157°. ganteum, where it exists as hexyl-
Hexachord
in ancient music, an interval of four tones and one semitone, equivalent to that which the moderns call a sixth.