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Features

Soil Parasites

Opening of the New York Zoological Park

Bids for the Proposed Cruisers

The Mammoth Power Stations of New York City

Naval Tests of Marconi Telegraphy

Report of the Bureau of Steam Engineering

Interesting Experiments with Photographic Plates

Masses Smaller than Atoms

Production of Hydrogen with the Aid of Magnesium

Coloring Bromide Prints

Some French Types of Automobiles

By C. De Kubicki

The Pea Louse, a New and Important Economic Species of the Genus Nectarophora

A Simple Device for Tightening Fence-Wires

Explorations in Patagonia

By J. B. Hatcher

The Parsons Steam Turbine

A Traction-Wheel of Improved Form

The "Becklight" Acetylene-Gas Generator

Departments

  • Letters

    Correspondence - November 18, 1899

  • Recommended

    New Books, Etc. - November 18, 1899

  • Departments

    Notes and Queries - November 18, 1899

  • Business and Personal - November 18, 1899

  • Recently Patented Inventions - November 18, 1899

  • Index of Inventions - November 18, 1899

  • Patents - November 18, 1899

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November 18, 1899

Beyond XX and XY

Biology. Identity. Equality.

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