Features
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 New Patent Laws--Important Changes Affecting American and Foreign Manufacturers--Free Trade in Patents Now Fully Established
Coating Vessels with Zinc
The Manufacture of Illuminating Gas
Depreciation of American Vitality
How Mercurial Thermometers are made
Scientific Intelligence- August 6, 1870
Is the Knowledge of English Grammar Necessary to the Writing of Good English?
How our Wheat Crops are Handled
Recent Americans and Foreign Patents- August 6, 1870
Answers to Correspondents- August 6, 1870
Official List of Patents- August 6, 1870
Departments
- Letters
Correspondence- August 6, 1870
- Departments
Business and Personal- August 6, 1870
