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The Manufacture of Plaster of Paris

By J. F. Gesner

The Practical Aspect of the Eight Hour Law

Measurement of the Initial Velocity of Projectiles

Publishers' Card

An Easy Telegraph Code

Jonah and the Belgian Academy

Death of Professor Agassiz

Hints for Cheap Floral Decoration

The Weeping Sophora of Japan

The Automatic Taper Lamp

Friction Geared Centrifugal Pump

Recent Geographical Notes - December 27, 1873

Careless Plumbing

An Automaton Transit of Venus

The Atmospheric Railway in London

Scientific and Practical Information - December 27, 1873

Combined Extension Measuring Rod and Divider

Toy Gymnast

Moistening Device for Lame Animals

The Crystal Self-Acting Table Fountain

Chinese Fresh Water Fish

Recent American and Foreign Patents - December 27, 1873

Answers to Correspondents - December 27, 1873

Communications Received - December 27, 1873

Canadian Patents - December 27, 1873


  • Letters

    Correspondence - December 27, 1873

  • Departments

    Business and Personal - December 27, 1873

  • Index of Inventions - December 27, 1873

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