Scientific American Magazine
Volume 25, Issue 21You are currently logged out. Please sign in to download the issue PDF.
Features
Improved Tunneling Drill
Trial of Fire Arms
Electricity at the American Institute Exhibition
Mammoth Cave and How it was Made
The Humboldt Monument
Williams' Improved Axle Box for Railway Cars
An Explosion on the Sun
Bebout's Rafter Hook
The Open Polar Sea
Evaporative Power of Boilers
How to Prevent and How to Extinguish Fires
The Sale of Patented Articles
Scientific Intelligence- November 18, 1871
The Proposed Exhibition of Vienna, in 1873
Fireproof Buildings for Preserving Public Records
Recent Patent Decisions- November 18, 1871
Answers to Correspondents- November 18, 1871
Queries- November 18, 1871
Applications for Extension of Patents- November 18, 1871
Recent American and Foreign Patents- November 18, 1871
Official List of Patents- November 18, 1871
Departments
Correspondence- November 18, 1871
Business and Personal- November 18, 1871
