Scientific American Magazine
Volume 23, Issue 6You are currently logged out. Please sign in to download the issue PDF.
Features
Universal Wood Working Machine
The Grinding and Polishing of Plate Glass by Machinery
Andersons Oil Safe
The "Farmer" Fountain
The Prussian Needle Gun and the French Chas-Sepot Needle Gun
Hydraulic Machinery
The Manufacture of Illuminating Gas
Coating Vessels with Zinc
The New Patent Laws--Important Changes Affecting American and Foreign Manufacturers--Free Trade in Patents Now Fully Established
Depreciation of American Vitality
Scientific Intelligence- August 6, 1870
Is the Knowledge of English Grammar Necessary to the Writing of Good English?
How Mercurial Thermometers are made
How our Wheat Crops are Handled
Answers to Correspondents- August 6, 1870
Recent Americans and Foreign Patents- August 6, 1870
Official List of Patents- August 6, 1870
Departments
Correspondence- August 6, 1870
Business and Personal- August 6, 1870
