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Features

Prof. Koch's Consumption Remedy

Trial Trip of the Gunboat Concord

Building the New Navy

Grafting a Dog's Bone on a Boy

Position of the Planets in December

Hatching Cod and Lobster

Work on the Nicaragua Canal

Dredging in Norway

The Similigraph Level

An Improved Toy Pistol

An Improved Wrench

A Device to Supply Cool Water

A Simple Fence-Making Machine

An Automatic Car Coupler

The Launch of the Armored Cruiser Maine at the Brooklyn Navy Yard

Photographic Notes- November 29, 1980

The Electric Underground Railway London

An Improved Flue Cleaner

A Counterbalanced Draw Bridge

Scientific American- November 29, 1980

Departments

  • Recommended

    New Books and Publications- November 29, 1980

  • Departments

    Recently Patented Inventions- November 29, 1980

  • Business and Personal- November 29, 1980

  • Notes and Queries- November 29, 1980

  • To Inventors- November 29, 1980

  • Index of Inventions- November 29, 1980

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Why Do Facts Fail?

Why Do Facts Fail?

Deconstructing Denial