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Improved Vertical Trip Hammer

Copper and Brass Working--The Ansonia Works

Manufacture of Indigo Carmine

The Written Languages of Savages

Recent Improvements in the Steam Engine Feeding Scoop for Locomotives

Editorial Summary

Recent American and Foreign Patents

Manufacturing, Mining, and Railroad Items

New Publications

Answers to Correspondents

Faries' Patent Supplemental Jaw for Screw Wrenches

Boardman's Device for Facing Nuts

Improved Tumbling Barrel and Coal Sifter

Iron Rails on Common Wagon Roads

The Sanitary Condition of Workshops and Manufactories

The Increase of Disease Among Domestic Animals

Paper Collars

Examiners to be Examined

White Gunpowder

The Bowery Explosion--The Engineer's Defence

Patents and Claims

Our Planet--Its Past and Future

Interesting Boring and Mining Experiments

Extension Notices


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September 09, 1868

20% Sitewide for President's Day