Features
Spool Blank Roughing Machine
How Axes are Made
The Car Shops of West Albany
The Advantages of Scientific Education
Handles for Barrels and Boxes
Detection of Impurities in Milk
Bed Bottom
Giffard's Universal Piston
American Horses
Miscellaneous Items - September 7, 1872
Griswold's Dental Plugging Instrument
Fancy Weaving Loom
Iridescent Engravings
Science and Theology
Progress of American Industry—Inauguration of Five Grand Industrial Expositions
Progress of the New Docks in this City—Artificial Stone Blocks Weighing Seventy-Nine Tuns
Scientific and Practical Information - September 7, 1872
Manufacture of Vinegar
Remarkable Thunderstorms
The Lake Superior Copper Regions
Letter from Professor R. H. Thurston - September 7, 1872
Recent American and Foreign Patents - September 7, 1872
Practical Hints to Inventors - September 7, 1872
Foreign Patents—A Hint to Patentees
New Patent Law in Canada - September 7, 1872
Departments
- From the Editor
Answers to Correspondents - September 7, 1872
- Letters
Correspondence - September 7, 1872
- Recommended
New Books and Publications - September 7, 1872
- Departments
Notes and Queries - September 7, 1872
Business and Personal - September 7, 1872
Index of Inventions - September 7, 1872
