Scientific American Magazine
Volume 44, Issue 19You are currently logged out. Please sign in to download the issue PDF.
Features
The Chicago Waterworks
Ozone and the Sanitology of Odors
“Patent Perfidy.”
Photophonic and Spectrophonic Discoveries
The National Academy of Sciences
The Date of the Glacial Era in Eastern North America
Public Works in New York City
Improvement in the Construction of Fences and Posts
Recent Decisions Relating to Patents
Improvement in Water Elevators
Improvement in Animal Shears
Miscellaneous Inventions - May 7, 1881
Improved Optometer
Manufacture of Real Lace by Machinery
Agricultural Inventions - May 7, 1881
Coffee.--its Uses and Medicinal Qualities
Departments
Correspondence - May 7, 1881
Business and Personal - May 7, 1881
Notes and Queries - May 7, 1881
Index of Inventions - May 7, 1881
New Books and Publications - May 7, 1881
