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Features

Metallic Roofing

Uses of Woolen Rags

Notes on Military and Naval Affairs

Armstrong's Great Gun Broken

On Force-Laws of Motion

Sewing Machines in England

White's Artificial Leg

Fresh Bread--Coarse and Fine for the Army

The Steam Wagon in the Far West

Alden's Type Setting Machine

Physical Laws--Changes in Bodies

The New Comet

Steam on City Railroads

Miscellaneous Summary

Successful Recruiting at the Scientific American Office

Census Statistics of 1860

Recent American Inventions - August 23, 1862

Patent Claims

Patents for Seventeen Years

Rates of Advertising

Important to Inventors

To Our Readers

The Cheapest Mode of Introducing Inventions

Valuable Receipts

Prospectus of the Scientific American

Departments

  • Letters

    Correspondence - August 23, 1862

  • Departments

    Notes and Queries - August 23, 1862

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August 23, 1862

Beyond XX and XY

Biology. Identity. Equality.