January 1875 Issue [Article] The first century of the republic. (Third paper.) Mechanical progress.–II Download PDF Adjust Share by Edward Henry Knight, This article is only available as a PDF to subscribers. Download PDF Tags 18th century 19th century Bridges, Iron and steel Hydraulic engineering Iron industry and trade Mechanical engineering Tool and die industry United States Woodworking tools More from Edward Henry Knight The mariners’ “cautionary signal” The first century of the republic. (Fifth paper.) Mechanical progress. (Concluded.) Printing The first century of the republic. (Fourth paper.) Mechanical progress.–III Adjust Share