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Commander Cheyne's Lectures

The Acme of Misinstruction

The Relation of Agriculture and Manufactures to Population

Water Fuel on a Locomotive

The National Academy of Science

Improved Pick

New Galvanometer

Engineering Inventions

How Kid Leather is Prepared

Improved Damper

Combined Lock and Reversible Latch

Electricity by Magnetic Induction

By Geo. M. Hopkins

Steam Boiler Notes

Miscellaneous Inventions

Novel Grate-Bar

Novel Ticket Reel and Receptacle

Improved Twisting Reel

Mechanical Inventions

The Great Sunfish

By A. W. Roberts

Communications Received


  • Departments


  • Recent Inventions

  • Notes and Queries

  • Business and Personal

  • New Books and Publications

  • Index of Inventions

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