Scientific American Magazine
Volume 29, Issue 20You are currently logged out. Please sign in to download the issue PDF.
Features
Holborn Viaduct Subways
On the Molecular Changes Produced by Variations of Temperature
The Panic and the Laboring Classes
A Recent Improvement in Gas Making
The Progress of the Hell Gate Excavations
Postal Science
Medical Science in Court - November 15, 1873
The Government Boiler Tests
Scientific and Practical Information - November 15, 1873
American Lighthouses
A New Improvement in Gas Manufacture
American Academy of Sciences
Improved Frost Log Dog
Lightning Sheep Shears
Combination Corn Sheller Boot jack Etc.
The Great Bridge at St Louis
Recent American and Foreign Patents - November 15, 1873
Answers to Correspondents - November 15, 1873
Communications Received - November 15, 1873
Departments
Correspondence - November 15, 1873
Notes and Queries - November 15, 1873
Business and Personal - November 15, 1873
Index of Inventions - November 15, 1873
