Scientific American Magazine
Volume 37, Issue 21You are currently logged out. Please sign in to download the issue PDF.
Features
The 42D Street Sewage Tunnel, New York City
Lessons in Mechanical Drawing
$80,000 Reward for a Cure for Cholera
Sun Spots Studied by Solar Photography
Cerebral Thermometry
The Glandular Theory of Disease
Notes of Decisions of the Courts
Improved Tile-Making Machine
Harrison's New Portable Flouring Mill
M. Trouve's New Moist Battery
Communications
Practical Mechanism
Improved Boring Machine
Improved Label Holder
The New French Exposition Palace
A Curious Result of Denudation
Raising Obelisks
New Arrangement of the Air Reservoirs in Pumps
Recent American and Foreign Patents
How to Adjust Engine Guide Bars
New Household Inventions
New Miscellaneous Inventions
New Mechanical and Engineering Inventions
New Agricultural Inventions
Wants and Business Inquiries
Departments
New Books and Publications
Business and Personal
Notes and Queries
Index of Inventions
Patents
