Scientific American Magazine
Volume 25, Issue 4You are currently logged out. Please sign in to download the issue PDF.
Features
The Estes Steam Engine, The General Oceanic Circulation
Discussion on Mr. Harding's Paper, "Entitled The Application of Steam to Canals", Concluded in Our Last Issue.--No. 1
Experiences of a Bureau Officer
King's "Valveless" Engine
Fowler's Improved Method of Adjusting Eccentrics
Nelson's Reversible Window Sash
Mental Order and System
Infringement Trial
Extinguishing Fires at their Commencement
Graphite, Plumbago, Black Lead
What is Doing at the Patent Office--Great Number of Applicants for Extensions
Photographic Notes- July 22, 1871
The Threaded Envelope Patents
Professor Tyndall on "Dust and Smoke"
Editorial Summary- July 22, 1871
No List of Patentees
Answers to Correspondents- July 22, 1871
Applications for Extension of Patents- July 22, 1871
Queries- July 22, 1871
Recent American and Foreign Patents- July 22, 1871
Departments
Correspondence- July 22, 1871
Business and Personal- July 22, 1871
