Scientific American Magazine Vol 25 Issue 25

Scientific American Magazine

Volume 25, Issue 25

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Features

Green and Stancliff's Apparatus for Hoisting and Conveying Coal

Notes on Flying and Flying Machines

The Thames Embankment

Remarkable Relation between the Specific Heat and the Atomic Weight

P. H. Vander Weyde

Self-Closing Telegraph Key

Wilcox's Folding Hencoop

The Repetition of Experiments

The New York Gas Monopolies

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 St. Gothard Tunnel--Another Grand Engineering Work

A Most Ingenious Machine

Education of the Eye

Mechanical Bigots

Important Improvement in Glass and Plate Engraving

To City Subscribers

Science Record for 1872

Scientific Intelligence- December 16, 1871

Timely Suggestions- December 16, 1871

Answers to Correspondents- December 16, 1871

Applications for Extension of Patents- December 16, 1871

Queries- December 16, 1871

Official List of Patents- December 16, 1871

Recent American and Foreign Patents- December 16, 1871

Departments

Correspondence- December 16, 1871

New Books and Publications- December 16, 1871

Business and Personal- December 16, 1871