Scientific American Magazine
Volume 64, Issue 21You are currently logged out. Please sign in to download the issue PDF.
Features
The Proposed Hudson River Suspension Bridge
Progress of Steam Engineering
Original Work in America
An Improved Freight Car Coupler
An Improved Gate Valve
A Drill to Facilitate Blasting
A Locomotive Spark Arrester
Breast Wheel for Lifting Water into the Morris Canal
An Improved Ore Washer
Some Apparatus used by the Vienna Fire Department
The Type-Writer a French Invention
Iridescent Glass
To Inventors- May 23, 1891
Departments
Correspondence- May 23, 1891
Business and Personal- May 23, 1891
Recently Patented Inventions- May 23, 1891
Notes and Queries- May 23, 1891
New Books and Publications- May 23, 1891
Index of Inventions- May 23, 1891
