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Features

Improved Railway Supply Apparatus, Improved Rotary Grates, and More

Metal Spinning

By John Anderson

Editorial Summary

H. W. Staples' Automatic Lamp-Filler

Tent Roof Garden Chair

Communication With and Between Deaf Mutes

Seasoning Boards

Aerial Navigation

NUMBER FIVE

Oxygen as a Source of Heat and Light

By Adolph Ott

The Manufacture of Lookingglasses and Mirrors

“How to Observe the Sun”

By J. N. Farrar

The Great St. Pancras Railway Station

The Origin of Candles

Life-Saving Guns

The Steam Engine Indicator

Brain and Muscle

What We Have Done in 1869 and What We Intend To Do in 1870

Progress of Labor

The Spirit of the Age

Announcement for 1870.—A Splendid Work of Art and Cash Premiums to be Given

New Publications

To Keep Cellars From Freezing

Manufacturing, Mining, and Railroad Items

Recent American and Foreign Patents

How to Obtain Letters Patent for New Inventions

Official List of Patents

Applications for Extension of Patents

Departments

  • Departments

    Correspondence

  • Business and Personal

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