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Features

How the Ax May be Made the Preserver of the Forest

Negotiable Paper for Patent Rights

Russia's Strategic Canal

Diver's Paralysis

Our Commerce With China

New Light Weight Uniforms

An Improved Cover for Milk-Cans

Car-Seal Breaker

A Novel Wrench

The Ralston Water-Still

The Spanish Submarine Torpedo Boat "Peral"

A New Disappearing Gun Carriage

The Cuban Invasion

Accident to the Revenue Cutter "Gresham"

How the Spanish Fortify the Country in Cuba

To Inventors - July 2, 1898

Departments

  • Letters

    Correspondence - July 2, 1898

  • Recommended

    New Books, Etc. - July 2, 1898

  • Departments

    The Heavens in July 1898

  • Recently Patented Inventions - July 2, 1898

  • Business and Personal - July 2, 1898

  • Notes and Queries - July 2, 1898

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July 02, 1898

Beyond XX and XY

Biology. Identity. Equality.