Features
Writing Fluids
Adjustable Plow
Double Turbine Water Wheel
Improved Shops
Simple Apparatus for Out-Door Sketching
Paper Boats—How Made
The Carpenter Bee
Scientific and Practical Information - September 14, 1872
Albany Steam Trap
Railway Rail Joint
The Star Sirius
Substances Acting Mechanically to Prevent the formation of Scale in Boilers
Terrestrial Magnetism - September 14, 1872
Renewed Activity at the Patent Officer—Re Organization and New Classification—Appointment and Promotions
The Newark Industrial Exposition
An Astronomical Robbery
Letter from Professor R. H. Thurston - September 14, 1872
Recent American and Foreign Patents - September 14, 1872
Foreign Patents—A Hint to Patentees
New Patent Law in Canada - September 14, 1872
Departments
- From the Editor
Answers to Correspondents - September 14, 1872
- Letters
Correspondence - September 14, 1872
- Recommended
New Books and Publications - September 14, 1872
- Departments
Business and Personal - September 14, 1872
Notes and Queries - September 14, 1872
Index of Inventions - September 14, 1872
