Features
The Hands of the Nation
Lightning Rods
New Steam Dredging Boats
Improved Bung
Armored Can
A Bridle Bit that is Something More, and an Improved Stocking for Horses
Saving of Time—A Serious Charge against the Scientific American
Scientific and Practical Information - July 27, 1872
Sewing Machine - July 27, 1872
Hose Coupling
The Two Oceans
Oxyhydrogen Street Lamps
Narrow and Cheap Railways
Solid Emery Grinder
Paper Hangings and their Manufacture
End of the Eight Hour Strike
The Nature of Comets
Recent American and Foreign Patents - July 27, 1872
New Patent Law in Canada - July 27, 1872
Departments
- From the Editor
Answers to Correspondents - July 27, 1872
- Letters
Correspondence - July 27, 1872
- Recommended
New Books and Publications - July 27, 1872
- Departments
Business and Personal - July 27, 1872
Notes and Queries - July 27, 1872
Index of Inventions - July 27, 1872
