Description

A very interesting issue. Features: Triangulation - why and how this precise surveying job is done; Editorials - The Nicaragua Canal - The "R-101" disaster - Spiritism exposed - Why a navy is needed - Sick railroads - Lessons learned; Our changing transportation - competitors to the railroads; Zone television and the television arc - television transmission via three channels; Tudying up the constellations - archaic method of outlining roups is being simplified; Problems of calendar improvement - the importance of the movment ot change our calendar; Tons of human hair in industry - woven into press-clth, hair serves a most useful purpose; This new big business of gardening - food raising becomes a gigantic mechanized industry; From the archeologist's Notebook - bronze bowl - home of a notorious Roman - Lid of Canopic jar - a Roman portrait - Chinese head-dress ornament; Man's insect allies - an insect that feeds on cacti and destroys them; Change - the great competitor; Sulfur - the second of three related articles on salt, sulfur and petroleum; Clemenceau and Foch - the United States enters the war - the Armistice and peace conference; Diesel versus gasoline-engined plane - the diesel-engined plane has a higher "ceiling"; A flexible amusement building in New Orleans - a municipal auditorium with a movable stage platform; A two-mile industrial water tunnel - tunnel for the ford plant carries enough water for several cities. Chip loose at top of spine. One inch opening between top of spine and front cover. Average wear. Unmarked. Tear to page 402. Book