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Features

Ducker's Portable Barrack and Field Hospital

The Benefits of the Patent Laws

Car Builders Perplexed About Car Couplers

Photographic Notes

A Transcontinental Balloon Voyage

Electric Lighting as an Investment

Improved Tool Grinder

A New Hand Truck

Muffler for Steam Valves

Feeding Stand for Poultry

Improved Hand Truck

Boiler Feeder

New Power Punching Presses

The Spheroidal State of Water

By T. O*amp*apos;conor Sloane

Wood Wool

Prismatic Gunpowder

The Water Buck

A Hairy Elephant

To Inventors

Miscellaneous Inventions

Engineering Inventions

Departments

  • Correspondence

  • Notes and Queries

  • Index of Inventions

  • Business and Personal

  • New Books and Publications

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