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Features

Spots in the Eyes

Gold Washes

Coffee, Tea, and Cocoa

Patent Law Reform

Improved Planing and Slotting Machine

Machine for making Plated or Covered Cord

Bosenbury's Boring Machine

Mining Machine

Grinding and Polishing Glass

Preparing Murexid Color

Spontaneous Combustion and Fires

The Patent Office and its Management

A Bill

Morris's Corrections for Local Magnetic Attraction

Creamer's Match Safe

A Good Whitewash

Curing the Backlash in Flourins Mills

Anecdote of a Fish

Friction Match Machine

Mechanics

Remarkable Works of Human Labor

Science in Sport

Grinding Mills

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    To Our Subscribers

  • Letters

    Correspondents - March 20, 1858

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March 20, 1858

Beyond XX and XY

Biology. Identity. Equality.