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Features

The Monitor as a Battle Ship

The Celestial World

The Manufacture and Uses of Aluminum

By H. C. Hovey

Manual Instruction of the Mechanic

The Magic Money Box

An Improved Cash Carrier

An Improved Milk Can

An Improved Barrel Truck and Jack

A New Machinists' Hammer

An Improved Glass Polishing Wheel

The San Diego Flume System

The New Dry Dock at Halifax

An Improved Car Brake

A Running-Board for the Top of Cars

The Mummy Cats of Beni Hassan

An Improved Cane Mill

Scientific American Building Edition- March 15, 1890

Departments

  • From the Editor

    To Inventors- March 15, 1890

  • Letters

    Correspondence- March 15, 1890

  • Recommended

    New Books and Publications- March 15, 1890

  • Departments

    Notes and Queries- March 15, 1890

  • Business and Personal- March 15, 1890

  • Recently Patented Inventions- March 15, 1890

  • Index of Inventions- March 15, 1890

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Why Do Facts Fail?

Why Do Facts Fail?

Deconstructing Denial