Features
Notes on Flying and Flying Machines
The Thames Embankment
Remarkable Relation between the Specific Heat and the Atomic Weight
Self-Closing Telegraph Key
Wilcox's Folding Hencoop
A Mare's Nest--More about the Gas Question
The Condemnation of the Hall of Public Records for the City and County of New York
The New York Gas Monopolies
The Repetition of Experiments
Education of the Eye
A Most Ingenious Machine
Important Improvement in Glass and Plate Engraving
Mechanical Bigots
The St. Gothard Tunnel--Another Grand Engineering Work
Timely Suggestions- December 16, 1871
To City Subscribers
Science Record for 1872
Scientific Intelligence- December 16, 1871
Answers to Correspondents- December 16, 1871
Applications for Extension of Patents- December 16, 1871
Official List of Patents- December 16, 1871
Queries- December 16, 1871
Recent American and Foreign Patents- December 16, 1871
Departments
- Letters
Correspondence- December 16, 1871
- Recommended
New Books and Publications- December 16, 1871
- Departments
Business and Personal- December 16, 1871
