[Article] The first century of the republic. (Fourth paper.) Mechanical progress.–III Adjust Share By Edward Henry Knight, This article is only available as a PDF to subscribers. Download PDF Tags 19th century Elevators Fire engines industry Mechanical engineering Sewing-machine industry Telegraph United States Weapons More from Edward Henry Knight The mariners’ “cautionary signal” The first century of the republic. (Fifth paper.) Mechanical progress. (Concluded.) Printing Adjust Share Close < Previous Issue | View All Issues | Next Issue > February 1875 < Previous Issue | View All Issues | Next Issue > Table of Contents Close