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The Shapley Engine

A Possible Improvement in House Heating

Prison Reform

Exhaust Steam for Heating Purposes

Scientific and Practical Information - November 28, 1874

Mechanical Aesthetics and Practical Men

To Underground Railway, New York City

The National Academy of Science

Biddle's Hydraulic Jack

Improved Hatchet

Improved Pinking Iron

A Novel Milk Can

The Late John Laird

The Fair of the American Institute

Recent American and Foreign Patents - November 28, 1874

Answers to Correspondents - November 28, 1874

Communication Received - November 28, 1874

Canadian Patents - November 28, 1874


  • Letters

    Correspondence - November 28, 1874

  • Departments

    Business and Personal - November 28, 1874

  • Index of Inventions - November 28, 1874

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