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Features

Progress of the Telephone

Model Tenements

The Patent Bill Defeated

The Menace to Europe

Safety at Sea

Mr. Robert G. Hatfield

American Industbies-No. 9

How the Patent Bill Died

A Surprise to Millers

A Glass Mountain and Road

New Vertical French Burr Mills

Recent American Patents - March 22, 1879

New Testing Machine

Recent American Inventions - March 22, 1879

A New Honey Extractor

Some Anatomical Peculiarities in the Male Chimpanzee

The Praxinoscope

Some Recent Inventions - March 22, 1879

Engineering Inventions - March 22, 1879

A New Packing Box

The Giant Snapping Turtle

The Parasol Ants of Texas

New Electric Lamp

Edison's Electric Light

Siemens' Electric Current Governor

The Edison Electric Light

Righi's Telephone

The Mexican Industrial Exhibition

The Agricultural Exhibition in London

To Inventors - March 22, 1879

Communications Received - March 22, 1879

Departments

  • Business and Personal - March 22, 1879

  • Departments

    Notes and Queries - March 22, 1879

  • Index of Inventions - March 22, 1879

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March 22, 1879

Think Outside the Gift Box