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Features

Porcelain Manufacture in New York

Models by Mail

A Trade Mark Rejection

Frozen Pipes and Hydrants

Increase of Postal Charges

Partnerships of Ants and Plants

Molecular Changes in Metals

By R. H. Thurston

Measuring Building Materials

Improved Sugar-Refining Tank

Improved Tree Protector

To Make Ovals and Circles of any Size

Gathering and Storing Ice

Practical Mechanism

By Joshua Rose

Improved Device for Laying Out Sashes

Improved Hydraulic Motor

The Cut-Leaved Begonia

An East Indian Ornamental Shrub

Recent American and Foreign Patents

Decisions of the Courts - March 27, 1875

Canadian Patents - March 27, 1875

Communications Received - March 27, 1875

Departments

  • Letters

    Correspondence - March 27, 1875

  • Recommended

    New Books and Publications - March 27, 1875

  • Departments

    Notes and Queries - March 27, 1875

  • Business and Personal - March 27, 1875

  • Index of Inventions - March 27, 1875

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March 27, 1875

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