Scientific American Magazine
Volume 28, Issue 25You are currently logged out. Please sign in to download the issue PDF.
Features
New Double Spindle Drill
Improved Cooking Vessel
The Spectroscope Simplified
The Digestive Apparatus
Pneumatic Foundations
The Preparation of Gelatin
Thick Cylinders
Freight Business of New York City Across the North River
The American Institute Fair
The Chicago Inter-State Industrial Exposition
Scientific and Practical Information
Silkworms
Iron Ship Construction
Improved Plow
A New Preventive for Slipping Belts
Lock Envelope
Tanite Emery Grinder with Adjustable Table
Improved Spindle Step
Car and Passenger Elevator
Sanitary Notes--Milk and its Adulterations
Recent American and Foreign Patents
Answers Correspondents
Communications Received
Departments
Correspondence
Notes and Queries
Business and Personal
Index of Inventions
