Scientific American Magazine
Volume 29, Issue 3You are currently logged out. Please sign in to download the issue PDF.
Features
Recent Improvements in Torpedo Warfare
Invention the Mother of Necessity
Boilers and Boiler Owners
Publishers' Notice
Underground Railways in American Cities
Street Travel
Snake Poisons
Notes from the Vienna Exposition
Specific Gravity Indicator
Electric Gas Lighter
New Form for Metallic Telegraph Poles
Cummings' Steam Mowing, Reaping, and Thrashing Machine
The Great Leopard Moth
En Route to the Great Exposition Number 2.--Letter from United States Commissioner Professor R. H.Thurston
Novel Claw Hatchet
A New Fire Escape
Improved Cultivator
New Heel Plate for Boots and Shoes
An Improved Horse Collar Brace
Robert Wilhelm Bunsen
The New Electric Light in London
Light and Life
Recent American and Foreign Patents
To Europe in a Balloon
Value of Patents, and How to Obtain Them Practical Hints to Inventors
Answers to Correspondents
Schedule of Patent Fees
Communications Received - July 19, 1873
To Investors - July 19, 1873
Scientific American - July 19, 1873
Departments
Correspondence - July 19, 1873
Notes and Queries - July 19, 1873
Business and Personal - July 19, 1873
Index of Inventions - July 19, 1873
