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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

By P. H. Vander Weyde

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

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