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Improved Rotary Spader, The Feat of the “Queen of the West”

Miscellaneous Summary

Modern English Engineering Practice

Valuable Receipts

A Board of Admiralty

The Pressure of the Atmosphere--A Vacuum

American and English Steam Fire-Engines

What Can Be Done for Inventors--Advice Gratis and Advice for Pay

A Chance for the Ingenious

A New Illuminator--Smith's Air Light

Absorption of Gases by Water and the Lungs

Discoveries and Inventions Abroad

Recent American Patents

Patent Claims


Brigg's Patent Sad-Iron Envelope


  • Departments


  • Notes and Queries

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