SCIENTIFIC AMERICAN, March, 1922, New York  This issue contains the following prints, articles, and/or ads: Winged Surveyors - What Aerial Photography Is Doing for Industry and Science; Moving Niagara Into Canada; The Lincoln Highway of the Telephone; The Mount Everest Reconnaissance; The Physical Basis of Heredity; Scrapping the Battleships; Spectacles for the Motion-Picture Camera; A New Caterpillar Development; Failure of St. Mary's Bascule Bridge; other articles and ads. This issue is good condition. See photos for additional details.