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Features

New Water Wheel

Preserving Stone Work

Improved Wiring Machine

List of Patent Claims

Francis' Metallic Boats in England

Important Notice

The Locomotive Explosion

Locomotive Engines for Propellers

The National Fair

Air Boiling of Iron.--Another Claimant

Strychnine Its Tests

Bessemer's Process

New Cement

Refining Iron.--The New Process

Hub Mortising Machine

Improved Blower Engine

Perpetual Motion

Traveling Steam Railroad

Portable Saw Mills and Sawing Machines

Rope Machines

Post Boring Machine

Steam Fire Engines

Parallel Vise

Steam Versus Water Power

The Woodworth Patent

Drop Press

Great Exhibition of the American Institute at the Crystal Palace, New York

Recent American Patents

To the Public

Boiler Incrustation Preventer

Lathe Chuck

Boot Crimp

Tree Cutting Machine

Burglar Alarm

Furs

Macadamized Versus Plank Roads

Gold from Marrow Bones

Improved Crane

Mechanic's Institute Polytechnic Schools

To Destroy Crickets

English Pottery

Hand Corn Planter

Pipe Coupling without Solder

Fattening Ducks

New Mowing Machine

Prospectus

Prospectus of The Scientific American

Pictures on the Retina of the Eye of a Deceased Person

Substitute for Hops. -- Nitric Acid Compounds

Explosion on a Steamboat

New Marble Saw

Syrup from the Chinese Sugar Millet

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    Correspondents - October 18, 1856

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October 18, 1856

Beyond XX and XY

Biology. Identity. Equality.