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Features

Upright Boring Machine

Horsenail Making in London

On Instinct

[Paper read before the British Association, by D. A. Spalding.]

Improved Mop, Head

Apparatus for Extinguishing Sparks

Improved Tank Locomotive

Automatic Boat Detaching Apparatus

Lake of Interest in England for the Vienna Exposition

Drawings for the Patent Office

New Discoveries Concerning Terrestrial Heat

The Determination of High Temperatures by Sound

Choosing an Occupation for a Young Man

Improvements in the Manufacture of Silk

The Latest Discoveries in the Polar Regions

Intolerance in Science

Scientific and Mechanical Possibilities

The Conflagration in Boston

Answers to Correspondents

Recent American and Foreign Patents

Practical Hints to Inventors

Departments

  • Departments

    Correspondence

  • Notes and Queries

  • Business and Personal

  • Index of Inventions

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November 23, 1872

Help Us Reforest the Mississippi River Valley