GAHNITE

an ore of zinc belonging to the cla known as spinels. It varies. in composition, and many contain several elements other than zinc. Part of the zine may be replaced by iron or magnesium. The general formula may be given as (ZnFeMg) (Alife) 20.. 1913) American soldier and engineer.. b. in Sumter county, South Carolina. in 1859; died in 1913. He graduated from the West Point Military Academy in 1884 and was a member of the International Boundary Convention of United States and Mexico 1891-94 and superjntended the building of the Washington aqueduct 1895-1898. In the Spanish War he was Colonel of a regiment of volunteer engineers: appointed Lt. Colonel in the regular army in 1909. A member of the Isthmian Commi ion in 1907 he became a director of the Panama R.R. and subsequently was engineer of a division of the Panama Canal from Gatun to Pedro Miguel. Author Wave Aciion in Relation to Engineering Structures, 1904.