Scientific American Magazine
Volume 23, Issue 13You are currently logged out. Please sign in to download the issue PDF.
Features
The History and Fortifications of Metz
Improved Scroll-Sawing Machinery, Gutta-Percha
Deep-Sea Exploration--How Soundings are Obtained
The Artisan in Denmark Spain, Portugal and Greece
Improved Wicket for Canal Locks
The Spider
The Electric Telegraph
Improved Stove Cover, Dish, and Kettle Lifter
Freeland's Lock Nuts
What are our Colleges Doing?
Modern Chemistry
The Draft of Vehicles
The Finishing and Decoration of Machinery
Chemical Experiments
Progress of Foreign Invention- September 24, 1870
The "Worm" on the Ailanthus
Mileage System of Railroad Commutation Tickets
Fair of the American Institute
Applications for the Extension of Patents- September 24, 1870
Answers to Correspondents- September 24, 1870
Recent American and Foreign Patents- September 24, 1870
Official List of Patents- September 24, 1870
Departments
Correspondence- September 24, 1870
New Books and Publications- September 24, 1870
Business and Personal- September 24, 1870
