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Features

Handling Excavated Material at Jerome Park Reservoir

Height of Ocean Waves

Selenides of Cobalt

Railroad Connections with Manhattan Island

Science Notes - July 6, 1901

Coke as a Substitute for Anthracite Coal

By Alton D. Adams

A Wyoming Fossil Quarry

A Novel Twine Holder and Cutter

A Trolley Palace Car

A Starting-Device for Hydrocarbon Motors

Pyramids of Del Mar--Erosion on the Pacific Coast

By Charles F. Holder

The Lance-Boats of the German Cavalry

The Thomas Auto-Tricycle

A New Instrument for the Measurement of High Temperatures

Business and Personal Wants

Departments

  • Departments

    Correspondence - July 6, 1901

  • New Books, Etc - July 6, 1901

  • Recently Patented Inventions - July 6, 1901

  • Notes and Queries - July 6, 1901

  • Index of Inventions - July 6, 1901

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July 06, 1901

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